const { CstParser, Lexer, createToken } = /* @__PURE__ */ (() => {
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  const freeGlobal$1 = freeGlobal;
  var freeSelf = typeof self == "object" && self && self.Object === Object && self;
  var root = freeGlobal$1 || freeSelf || Function("return this")();
  const root$1 = root;
  var Symbol$1 = root$1.Symbol;
  const Symbol$2 = Symbol$1;
  var objectProto$j = Object.prototype;
  var hasOwnProperty$g = objectProto$j.hasOwnProperty;
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    try {
      value[symToStringTag$1] = void 0;
      var unmasked = true;
    } catch (e) {
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        delete value[symToStringTag$1];
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  function objectToString(value) {
    return nativeObjectToString.call(value);
  }
  var nullTag = "[object Null]", undefinedTag = "[object Undefined]";
  var symToStringTag = Symbol$2 ? Symbol$2.toStringTag : void 0;
  function baseGetTag(value) {
    if (value == null) {
      return value === void 0 ? undefinedTag : nullTag;
    }
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  }
  function isObjectLike(value) {
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  }
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  }
  function arrayMap(array, iteratee) {
    var index = -1, length = array == null ? 0 : array.length, result = Array(length);
    while (++index < length) {
      result[index] = iteratee(array[index], index, array);
    }
    return result;
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  var isArray = Array.isArray;
  const isArray$1 = isArray;
  var INFINITY$3 = 1 / 0;
  var symbolProto$2 = Symbol$2 ? Symbol$2.prototype : void 0, symbolToString = symbolProto$2 ? symbolProto$2.toString : void 0;
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    if (typeof value == "string") {
      return value;
    }
    if (isArray$1(value)) {
      return arrayMap(value, baseToString) + "";
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    if (isSymbol(value)) {
      return symbolToString ? symbolToString.call(value) : "";
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    while (index-- && reWhitespace.test(string.charAt(index))) {
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  var reTrimStart = /^\s+/;
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    var type = typeof value;
    return value != null && (type == "object" || type == "function");
  }
  var NAN = 0 / 0;
  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
  var reIsBinary = /^0b[01]+$/i;
  var reIsOctal = /^0o[0-7]+$/i;
  var freeParseInt = parseInt;
  function toNumber(value) {
    if (typeof value == "number") {
      return value;
    }
    if (isSymbol(value)) {
      return NAN;
    }
    if (isObject(value)) {
      var other = typeof value.valueOf == "function" ? value.valueOf() : value;
      value = isObject(other) ? other + "" : other;
    }
    if (typeof value != "string") {
      return value === 0 ? value : +value;
    }
    value = baseTrim(value);
    var isBinary = reIsBinary.test(value);
    return isBinary || reIsOctal.test(value) ? freeParseInt(value.slice(2), isBinary ? 2 : 8) : reIsBadHex.test(value) ? NAN : +value;
  }
  var INFINITY$2 = 1 / 0, MAX_INTEGER = 17976931348623157e292;
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      return value === 0 ? value : 0;
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    value = toNumber(value);
    if (value === INFINITY$2 || value === -INFINITY$2) {
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      return sign * MAX_INTEGER;
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    return value === value ? value : 0;
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  function toInteger(value) {
    var result = toFinite(value), remainder = result % 1;
    return result === result ? remainder ? result - remainder : result : 0;
  }
  function identity(value) {
    return value;
  }
  var asyncTag = "[object AsyncFunction]", funcTag$2 = "[object Function]", genTag$1 = "[object GeneratorFunction]", proxyTag = "[object Proxy]";
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    if (!isObject(value)) {
      return false;
    }
    var tag = baseGetTag(value);
    return tag == funcTag$2 || tag == genTag$1 || tag == asyncTag || tag == proxyTag;
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  var coreJsData = root$1["__core-js_shared__"];
  const coreJsData$1 = coreJsData;
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  var funcProto$1 = Function.prototype;
  var funcToString$1 = funcProto$1.toString;
  function toSource(func) {
    if (func != null) {
      try {
        return funcToString$1.call(func);
      } catch (e) {
      }
      try {
        return func + "";
      } catch (e) {
      }
    }
    return "";
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  var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
  var reIsHostCtor = /^\[object .+?Constructor\]$/;
  var funcProto = Function.prototype, objectProto$h = Object.prototype;
  var funcToString = funcProto.toString;
  var hasOwnProperty$f = objectProto$h.hasOwnProperty;
  var reIsNative = RegExp(
    "^" + funcToString.call(hasOwnProperty$f).replace(reRegExpChar, "\\$&").replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, "$1.*?") + "$"
  );
  function baseIsNative(value) {
    if (!isObject(value) || isMasked(value)) {
      return false;
    }
    var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
    return pattern.test(toSource(value));
  }
  function getValue(object, key) {
    return object == null ? void 0 : object[key];
  }
  function getNative(object, key) {
    var value = getValue(object, key);
    return baseIsNative(value) ? value : void 0;
  }
  var WeakMap = getNative(root$1, "WeakMap");
  const WeakMap$1 = WeakMap;
  var objectCreate = Object.create;
  var baseCreate = function() {
    function object() {
    }
    return function(proto) {
      if (!isObject(proto)) {
        return {};
      }
      if (objectCreate) {
        return objectCreate(proto);
      }
      object.prototype = proto;
      var result = new object();
      object.prototype = void 0;
      return result;
    };
  }();
  const baseCreate$1 = baseCreate;
  function apply(func, thisArg, args) {
    switch (args.length) {
      case 0:
        return func.call(thisArg);
      case 1:
        return func.call(thisArg, args[0]);
      case 2:
        return func.call(thisArg, args[0], args[1]);
      case 3:
        return func.call(thisArg, args[0], args[1], args[2]);
    }
    return func.apply(thisArg, args);
  }
  function noop() {
  }
  function copyArray(source, array) {
    var index = -1, length = source.length;
    array || (array = Array(length));
    while (++index < length) {
      array[index] = source[index];
    }
    return array;
  }
  var HOT_COUNT = 800, HOT_SPAN = 16;
  var nativeNow = Date.now;
  function shortOut(func) {
    var count = 0, lastCalled = 0;
    return function() {
      var stamp = nativeNow(), remaining = HOT_SPAN - (stamp - lastCalled);
      lastCalled = stamp;
      if (remaining > 0) {
        if (++count >= HOT_COUNT) {
          return arguments[0];
        }
      } else {
        count = 0;
      }
      return func.apply(void 0, arguments);
    };
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      return value;
    };
  }
  var defineProperty = function() {
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      var func = getNative(Object, "defineProperty");
      func({}, "", {});
      return func;
    } catch (e) {
    }
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  var baseSetToString = !defineProperty$1 ? identity : function(func, string) {
    return defineProperty$1(func, "toString", {
      configurable: true,
      enumerable: false,
      value: constant(string),
      writable: true
    });
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  var setToString = shortOut(baseSetToString$1);
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  function arrayEach(array, iteratee) {
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    while (++index < length) {
      if (iteratee(array[index], index, array) === false) {
        break;
      }
    }
    return array;
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  function baseFindIndex(array, predicate, fromIndex, fromRight) {
    var length = array.length, index = fromIndex + (fromRight ? 1 : -1);
    while (fromRight ? index-- : ++index < length) {
      if (predicate(array[index], index, array)) {
        return index;
      }
    }
    return -1;
  }
  function baseIsNaN(value) {
    return value !== value;
  }
  function strictIndexOf(array, value, fromIndex) {
    var index = fromIndex - 1, length = array.length;
    while (++index < length) {
      if (array[index] === value) {
        return index;
      }
    }
    return -1;
  }
  function baseIndexOf(array, value, fromIndex) {
    return value === value ? strictIndexOf(array, value, fromIndex) : baseFindIndex(array, baseIsNaN, fromIndex);
  }
  function arrayIncludes(array, value) {
    var length = array == null ? 0 : array.length;
    return !!length && baseIndexOf(array, value, 0) > -1;
  }
  var MAX_SAFE_INTEGER$1 = 9007199254740991;
  var reIsUint = /^(?:0|[1-9]\d*)$/;
  function isIndex(value, length) {
    var type = typeof value;
    length = length == null ? MAX_SAFE_INTEGER$1 : length;
    return !!length && (type == "number" || type != "symbol" && reIsUint.test(value)) && value > -1 && value % 1 == 0 && value < length;
  }
  function baseAssignValue(object, key, value) {
    if (key == "__proto__" && defineProperty$1) {
      defineProperty$1(object, key, {
        configurable: true,
        enumerable: true,
        value,
        writable: true
      });
    } else {
      object[key] = value;
    }
  }
  function eq(value, other) {
    return value === other || value !== value && other !== other;
  }
  var objectProto$g = Object.prototype;
  var hasOwnProperty$e = objectProto$g.hasOwnProperty;
  function assignValue(object, key, value) {
    var objValue = object[key];
    if (!(hasOwnProperty$e.call(object, key) && eq(objValue, value)) || value === void 0 && !(key in object)) {
      baseAssignValue(object, key, value);
    }
  }
  function copyObject(source, props, object, customizer) {
    var isNew = !object;
    object || (object = {});
    var index = -1, length = props.length;
    while (++index < length) {
      var key = props[index];
      var newValue = customizer ? customizer(object[key], source[key], key, object, source) : void 0;
      if (newValue === void 0) {
        newValue = source[key];
      }
      if (isNew) {
        baseAssignValue(object, key, newValue);
      } else {
        assignValue(object, key, newValue);
      }
    }
    return object;
  }
  var nativeMax$3 = Math.max;
  function overRest(func, start, transform) {
    start = nativeMax$3(start === void 0 ? func.length - 1 : start, 0);
    return function() {
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      while (++index < length) {
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      }
      index = -1;
      var otherArgs = Array(start + 1);
      while (++index < start) {
        otherArgs[index] = args[index];
      }
      otherArgs[start] = transform(array);
      return apply(func, this, otherArgs);
    };
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  function baseRest(func, start) {
    return setToString$1(overRest(func, start, identity), func + "");
  }
  var MAX_SAFE_INTEGER = 9007199254740991;
  function isLength(value) {
    return typeof value == "number" && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
  }
  function isArrayLike(value) {
    return value != null && isLength(value.length) && !isFunction(value);
  }
  function isIterateeCall(value, index, object) {
    if (!isObject(object)) {
      return false;
    }
    var type = typeof index;
    if (type == "number" ? isArrayLike(object) && isIndex(index, object.length) : type == "string" && index in object) {
      return eq(object[index], value);
    }
    return false;
  }
  function createAssigner(assigner) {
    return baseRest(function(object, sources) {
      var index = -1, length = sources.length, customizer = length > 1 ? sources[length - 1] : void 0, guard = length > 2 ? sources[2] : void 0;
      customizer = assigner.length > 3 && typeof customizer == "function" ? (length--, customizer) : void 0;
      if (guard && isIterateeCall(sources[0], sources[1], guard)) {
        customizer = length < 3 ? void 0 : customizer;
        length = 1;
      }
      object = Object(object);
      while (++index < length) {
        var source = sources[index];
        if (source) {
          assigner(object, source, index, customizer);
        }
      }
      return object;
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  var objectProto$f = Object.prototype;
  function isPrototype(value) {
    var Ctor = value && value.constructor, proto = typeof Ctor == "function" && Ctor.prototype || objectProto$f;
    return value === proto;
  }
  function baseTimes(n, iteratee) {
    var index = -1, result = Array(n);
    while (++index < n) {
      result[index] = iteratee(index);
    }
    return result;
  }
  var argsTag$3 = "[object Arguments]";
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      return arguments;
    }()
  ) ? baseIsArguments : function(value) {
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  };
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  var typedArrayTags = {};
  typedArrayTags[float32Tag$2] = typedArrayTags[float64Tag$2] = typedArrayTags[int8Tag$2] = typedArrayTags[int16Tag$2] = typedArrayTags[int32Tag$2] = typedArrayTags[uint8Tag$2] = typedArrayTags[uint8ClampedTag$2] = typedArrayTags[uint16Tag$2] = typedArrayTags[uint32Tag$2] = true;
  typedArrayTags[argsTag$2] = typedArrayTags[arrayTag$2] = typedArrayTags[arrayBufferTag$3] = typedArrayTags[boolTag$3] = typedArrayTags[dataViewTag$4] = typedArrayTags[dateTag$3] = typedArrayTags[errorTag$2] = typedArrayTags[funcTag$1] = typedArrayTags[mapTag$6] = typedArrayTags[numberTag$3] = typedArrayTags[objectTag$3] = typedArrayTags[regexpTag$4] = typedArrayTags[setTag$6] = typedArrayTags[stringTag$4] = typedArrayTags[weakMapTag$2] = false;
  function baseIsTypedArray(value) {
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  function baseUnary(func) {
    return function(value) {
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  var freeExports$1 = typeof exports == "object" && exports && !exports.nodeType && exports;
  var freeModule$1 = freeExports$1 && typeof module == "object" && module && !module.nodeType && module;
  var moduleExports$1 = freeModule$1 && freeModule$1.exports === freeExports$1;
  var freeProcess = moduleExports$1 && freeGlobal$1.process;
  var nodeUtil = function() {
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      if (types) {
        return types;
      }
      return freeProcess && freeProcess.binding && freeProcess.binding("util");
    } catch (e) {
    }
  }();
  const nodeUtil$1 = nodeUtil;
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  var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;
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  var hasOwnProperty$c = objectProto$d.hasOwnProperty;
  function arrayLikeKeys(value, inherited) {
    var isArr = isArray$1(value), isArg = !isArr && isArguments$1(value), isBuff = !isArr && !isArg && isBuffer$1(value), isType = !isArr && !isArg && !isBuff && isTypedArray$1(value), skipIndexes = isArr || isArg || isBuff || isType, result = skipIndexes ? baseTimes(value.length, String) : [], length = result.length;
    for (var key in value) {
      if ((inherited || hasOwnProperty$c.call(value, key)) && !(skipIndexes && // Safari 9 has enumerable `arguments.length` in strict mode.
      (key == "length" || // Node.js 0.10 has enumerable non-index properties on buffers.
      isBuff && (key == "offset" || key == "parent") || // PhantomJS 2 has enumerable non-index properties on typed arrays.
      isType && (key == "buffer" || key == "byteLength" || key == "byteOffset") || // Skip index properties.
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  function overArg(func, transform) {
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  var nativeKeys = overArg(Object.keys, Object);
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  var objectProto$c = Object.prototype;
  var hasOwnProperty$b = objectProto$c.hasOwnProperty;
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    if (!isPrototype(object)) {
      return nativeKeys$1(object);
    }
    var result = [];
    for (var key in Object(object)) {
      if (hasOwnProperty$b.call(object, key) && key != "constructor") {
        result.push(key);
      }
    }
    return result;
  }
  function keys(object) {
    return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
  }
  var objectProto$b = Object.prototype;
  var hasOwnProperty$a = objectProto$b.hasOwnProperty;
  var assign = createAssigner(function(object, source) {
    if (isPrototype(source) || isArrayLike(source)) {
      copyObject(source, keys(source), object);
      return;
    }
    for (var key in source) {
      if (hasOwnProperty$a.call(source, key)) {
        assignValue(object, key, source[key]);
      }
    }
  });
  const assign$1 = assign;
  function nativeKeysIn(object) {
    var result = [];
    if (object != null) {
      for (var key in Object(object)) {
        result.push(key);
      }
    }
    return result;
  }
  var objectProto$a = Object.prototype;
  var hasOwnProperty$9 = objectProto$a.hasOwnProperty;
  function baseKeysIn(object) {
    if (!isObject(object)) {
      return nativeKeysIn(object);
    }
    var isProto = isPrototype(object), result = [];
    for (var key in object) {
      if (!(key == "constructor" && (isProto || !hasOwnProperty$9.call(object, key)))) {
        result.push(key);
      }
    }
    return result;
  }
  function keysIn(object) {
    return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
  }
  var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/, reIsPlainProp = /^\w*$/;
  function isKey(value, object) {
    if (isArray$1(value)) {
      return false;
    }
    var type = typeof value;
    if (type == "number" || type == "symbol" || type == "boolean" || value == null || isSymbol(value)) {
      return true;
    }
    return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || object != null && value in Object(object);
  }
  var nativeCreate = getNative(Object, "create");
  const nativeCreate$1 = nativeCreate;
  function hashClear() {
    this.__data__ = nativeCreate$1 ? nativeCreate$1(null) : {};
    this.size = 0;
  }
  function hashDelete(key) {
    var result = this.has(key) && delete this.__data__[key];
    this.size -= result ? 1 : 0;
    return result;
  }
  var HASH_UNDEFINED$2 = "__lodash_hash_undefined__";
  var objectProto$9 = Object.prototype;
  var hasOwnProperty$8 = objectProto$9.hasOwnProperty;
  function hashGet(key) {
    var data = this.__data__;
    if (nativeCreate$1) {
      var result = data[key];
      return result === HASH_UNDEFINED$2 ? void 0 : result;
    }
    return hasOwnProperty$8.call(data, key) ? data[key] : void 0;
  }
  var objectProto$8 = Object.prototype;
  var hasOwnProperty$7 = objectProto$8.hasOwnProperty;
  function hashHas(key) {
    var data = this.__data__;
    return nativeCreate$1 ? data[key] !== void 0 : hasOwnProperty$7.call(data, key);
  }
  var HASH_UNDEFINED$1 = "__lodash_hash_undefined__";
  function hashSet(key, value) {
    var data = this.__data__;
    this.size += this.has(key) ? 0 : 1;
    data[key] = nativeCreate$1 && value === void 0 ? HASH_UNDEFINED$1 : value;
    return this;
  }
  function Hash(entries) {
    var index = -1, length = entries == null ? 0 : entries.length;
    this.clear();
    while (++index < length) {
      var entry = entries[index];
      this.set(entry[0], entry[1]);
    }
  }
  Hash.prototype.clear = hashClear;
  Hash.prototype["delete"] = hashDelete;
  Hash.prototype.get = hashGet;
  Hash.prototype.has = hashHas;
  Hash.prototype.set = hashSet;
  function listCacheClear() {
    this.__data__ = [];
    this.size = 0;
  }
  function assocIndexOf(array, key) {
    var length = array.length;
    while (length--) {
      if (eq(array[length][0], key)) {
        return length;
      }
    }
    return -1;
  }
  var arrayProto = Array.prototype;
  var splice = arrayProto.splice;
  function listCacheDelete(key) {
    var data = this.__data__, index = assocIndexOf(data, key);
    if (index < 0) {
      return false;
    }
    var lastIndex = data.length - 1;
    if (index == lastIndex) {
      data.pop();
    } else {
      splice.call(data, index, 1);
    }
    --this.size;
    return true;
  }
  function listCacheGet(key) {
    var data = this.__data__, index = assocIndexOf(data, key);
    return index < 0 ? void 0 : data[index][1];
  }
  function listCacheHas(key) {
    return assocIndexOf(this.__data__, key) > -1;
  }
  function listCacheSet(key, value) {
    var data = this.__data__, index = assocIndexOf(data, key);
    if (index < 0) {
      ++this.size;
      data.push([key, value]);
    } else {
      data[index][1] = value;
    }
    return this;
  }
  function ListCache(entries) {
    var index = -1, length = entries == null ? 0 : entries.length;
    this.clear();
    while (++index < length) {
      var entry = entries[index];
      this.set(entry[0], entry[1]);
    }
  }
  ListCache.prototype.clear = listCacheClear;
  ListCache.prototype["delete"] = listCacheDelete;
  ListCache.prototype.get = listCacheGet;
  ListCache.prototype.has = listCacheHas;
  ListCache.prototype.set = listCacheSet;
  var Map$1 = getNative(root$1, "Map");
  const Map$2 = Map$1;
  function mapCacheClear() {
    this.size = 0;
    this.__data__ = {
      hash: new Hash(),
      map: new (Map$2 || ListCache)(),
      string: new Hash()
    };
  }
  function isKeyable(value) {
    var type = typeof value;
    return type == "string" || type == "number" || type == "symbol" || type == "boolean" ? value !== "__proto__" : value === null;
  }
  function getMapData(map2, key) {
    var data = map2.__data__;
    return isKeyable(key) ? data[typeof key == "string" ? "string" : "hash"] : data.map;
  }
  function mapCacheDelete(key) {
    var result = getMapData(this, key)["delete"](key);
    this.size -= result ? 1 : 0;
    return result;
  }
  function mapCacheGet(key) {
    return getMapData(this, key).get(key);
  }
  function mapCacheHas(key) {
    return getMapData(this, key).has(key);
  }
  function mapCacheSet(key, value) {
    var data = getMapData(this, key), size = data.size;
    data.set(key, value);
    this.size += data.size == size ? 0 : 1;
    return this;
  }
  function MapCache(entries) {
    var index = -1, length = entries == null ? 0 : entries.length;
    this.clear();
    while (++index < length) {
      var entry = entries[index];
      this.set(entry[0], entry[1]);
    }
  }
  MapCache.prototype.clear = mapCacheClear;
  MapCache.prototype["delete"] = mapCacheDelete;
  MapCache.prototype.get = mapCacheGet;
  MapCache.prototype.has = mapCacheHas;
  MapCache.prototype.set = mapCacheSet;
  var FUNC_ERROR_TEXT$1 = "Expected a function";
  function memoize(func, resolver) {
    if (typeof func != "function" || resolver != null && typeof resolver != "function") {
      throw new TypeError(FUNC_ERROR_TEXT$1);
    }
    var memoized = function() {
      var args = arguments, key = resolver ? resolver.apply(this, args) : args[0], cache = memoized.cache;
      if (cache.has(key)) {
        return cache.get(key);
      }
      var result = func.apply(this, args);
      memoized.cache = cache.set(key, result) || cache;
      return result;
    };
    memoized.cache = new (memoize.Cache || MapCache)();
    return memoized;
  }
  memoize.Cache = MapCache;
  var MAX_MEMOIZE_SIZE = 500;
  function memoizeCapped(func) {
    var result = memoize(func, function(key) {
      if (cache.size === MAX_MEMOIZE_SIZE) {
        cache.clear();
      }
      return key;
    });
    var cache = result.cache;
    return result;
  }
  var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
  var reEscapeChar = /\\(\\)?/g;
  var stringToPath = memoizeCapped(function(string) {
    var result = [];
    if (string.charCodeAt(0) === 46) {
      result.push("");
    }
    string.replace(rePropName, function(match, number, quote, subString) {
      result.push(quote ? subString.replace(reEscapeChar, "$1") : number || match);
    });
    return result;
  });
  const stringToPath$1 = stringToPath;
  function toString(value) {
    return value == null ? "" : baseToString(value);
  }
  function castPath(value, object) {
    if (isArray$1(value)) {
      return value;
    }
    return isKey(value, object) ? [value] : stringToPath$1(toString(value));
  }
  var INFINITY$1 = 1 / 0;
  function toKey(value) {
    if (typeof value == "string" || isSymbol(value)) {
      return value;
    }
    var result = value + "";
    return result == "0" && 1 / value == -INFINITY$1 ? "-0" : result;
  }
  function baseGet(object, path) {
    path = castPath(path, object);
    var index = 0, length = path.length;
    while (object != null && index < length) {
      object = object[toKey(path[index++])];
    }
    return index && index == length ? object : void 0;
  }
  function get(object, path, defaultValue) {
    var result = object == null ? void 0 : baseGet(object, path);
    return result === void 0 ? defaultValue : result;
  }
  function arrayPush(array, values2) {
    var index = -1, length = values2.length, offset = array.length;
    while (++index < length) {
      array[offset + index] = values2[index];
    }
    return array;
  }
  var spreadableSymbol = Symbol$2 ? Symbol$2.isConcatSpreadable : void 0;
  function isFlattenable(value) {
    return isArray$1(value) || isArguments$1(value) || !!(spreadableSymbol && value && value[spreadableSymbol]);
  }
  function baseFlatten(array, depth, predicate, isStrict, result) {
    var index = -1, length = array.length;
    predicate || (predicate = isFlattenable);
    result || (result = []);
    while (++index < length) {
      var value = array[index];
      if (depth > 0 && predicate(value)) {
        if (depth > 1) {
          baseFlatten(value, depth - 1, predicate, isStrict, result);
        } else {
          arrayPush(result, value);
        }
      } else if (!isStrict) {
        result[result.length] = value;
      }
    }
    return result;
  }
  function flatten(array) {
    var length = array == null ? 0 : array.length;
    return length ? baseFlatten(array, 1) : [];
  }
  var getPrototype = overArg(Object.getPrototypeOf, Object);
  const getPrototype$1 = getPrototype;
  function baseSlice(array, start, end) {
    var index = -1, length = array.length;
    if (start < 0) {
      start = -start > length ? 0 : length + start;
    }
    end = end > length ? length : end;
    if (end < 0) {
      end += length;
    }
    length = start > end ? 0 : end - start >>> 0;
    start >>>= 0;
    var result = Array(length);
    while (++index < length) {
      result[index] = array[index + start];
    }
    return result;
  }
  function arrayReduce(array, iteratee, accumulator, initAccum) {
    var index = -1, length = array == null ? 0 : array.length;
    if (initAccum && length) {
      accumulator = array[++index];
    }
    while (++index < length) {
      accumulator = iteratee(accumulator, array[index], index, array);
    }
    return accumulator;
  }
  function stackClear() {
    this.__data__ = new ListCache();
    this.size = 0;
  }
  function stackDelete(key) {
    var data = this.__data__, result = data["delete"](key);
    this.size = data.size;
    return result;
  }
  function stackGet(key) {
    return this.__data__.get(key);
  }
  function stackHas(key) {
    return this.__data__.has(key);
  }
  var LARGE_ARRAY_SIZE$2 = 200;
  function stackSet(key, value) {
    var data = this.__data__;
    if (data instanceof ListCache) {
      var pairs = data.__data__;
      if (!Map$2 || pairs.length < LARGE_ARRAY_SIZE$2 - 1) {
        pairs.push([key, value]);
        this.size = ++data.size;
        return this;
      }
      data = this.__data__ = new MapCache(pairs);
    }
    data.set(key, value);
    this.size = data.size;
    return this;
  }
  function Stack(entries) {
    var data = this.__data__ = new ListCache(entries);
    this.size = data.size;
  }
  Stack.prototype.clear = stackClear;
  Stack.prototype["delete"] = stackDelete;
  Stack.prototype.get = stackGet;
  Stack.prototype.has = stackHas;
  Stack.prototype.set = stackSet;
  function baseAssign(object, source) {
    return object && copyObject(source, keys(source), object);
  }
  function baseAssignIn(object, source) {
    return object && copyObject(source, keysIn(source), object);
  }
  var freeExports = typeof exports == "object" && exports && !exports.nodeType && exports;
  var freeModule = freeExports && typeof module == "object" && module && !module.nodeType && module;
  var moduleExports = freeModule && freeModule.exports === freeExports;
  var Buffer = moduleExports ? root$1.Buffer : void 0, allocUnsafe = Buffer ? Buffer.allocUnsafe : void 0;
  function cloneBuffer(buffer, isDeep) {
    if (isDeep) {
      return buffer.slice();
    }
    var length = buffer.length, result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);
    buffer.copy(result);
    return result;
  }
  function arrayFilter(array, predicate) {
    var index = -1, length = array == null ? 0 : array.length, resIndex = 0, result = [];
    while (++index < length) {
      var value = array[index];
      if (predicate(value, index, array)) {
        result[resIndex++] = value;
      }
    }
    return result;
  }
  function stubArray() {
    return [];
  }
  var objectProto$7 = Object.prototype;
  var propertyIsEnumerable = objectProto$7.propertyIsEnumerable;
  var nativeGetSymbols$1 = Object.getOwnPropertySymbols;
  var getSymbols = !nativeGetSymbols$1 ? stubArray : function(object) {
    if (object == null) {
      return [];
    }
    object = Object(object);
    return arrayFilter(nativeGetSymbols$1(object), function(symbol) {
      return propertyIsEnumerable.call(object, symbol);
    });
  };
  const getSymbols$1 = getSymbols;
  function copySymbols(source, object) {
    return copyObject(source, getSymbols$1(source), object);
  }
  var nativeGetSymbols = Object.getOwnPropertySymbols;
  var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
    var result = [];
    while (object) {
      arrayPush(result, getSymbols$1(object));
      object = getPrototype$1(object);
    }
    return result;
  };
  const getSymbolsIn$1 = getSymbolsIn;
  function copySymbolsIn(source, object) {
    return copyObject(source, getSymbolsIn$1(source), object);
  }
  function baseGetAllKeys(object, keysFunc, symbolsFunc) {
    var result = keysFunc(object);
    return isArray$1(object) ? result : arrayPush(result, symbolsFunc(object));
  }
  function getAllKeys(object) {
    return baseGetAllKeys(object, keys, getSymbols$1);
  }
  function getAllKeysIn(object) {
    return baseGetAllKeys(object, keysIn, getSymbolsIn$1);
  }
  var DataView = getNative(root$1, "DataView");
  const DataView$1 = DataView;
  var Promise$1 = getNative(root$1, "Promise");
  const Promise$2 = Promise$1;
  var Set = getNative(root$1, "Set");
  const Set$1 = Set;
  var mapTag$5 = "[object Map]", objectTag$2 = "[object Object]", promiseTag = "[object Promise]", setTag$5 = "[object Set]", weakMapTag$1 = "[object WeakMap]";
  var dataViewTag$3 = "[object DataView]";
  var dataViewCtorString = toSource(DataView$1), mapCtorString = toSource(Map$2), promiseCtorString = toSource(Promise$2), setCtorString = toSource(Set$1), weakMapCtorString = toSource(WeakMap$1);
  var getTag = baseGetTag;
  if (DataView$1 && getTag(new DataView$1(new ArrayBuffer(1))) != dataViewTag$3 || Map$2 && getTag(new Map$2()) != mapTag$5 || Promise$2 && getTag(Promise$2.resolve()) != promiseTag || Set$1 && getTag(new Set$1()) != setTag$5 || WeakMap$1 && getTag(new WeakMap$1()) != weakMapTag$1) {
    getTag = function(value) {
      var result = baseGetTag(value), Ctor = result == objectTag$2 ? value.constructor : void 0, ctorString = Ctor ? toSource(Ctor) : "";
      if (ctorString) {
        switch (ctorString) {
          case dataViewCtorString:
            return dataViewTag$3;
          case mapCtorString:
            return mapTag$5;
          case promiseCtorString:
            return promiseTag;
          case setCtorString:
            return setTag$5;
          case weakMapCtorString:
            return weakMapTag$1;
        }
      }
      return result;
    };
  }
  const getTag$1 = getTag;
  var objectProto$6 = Object.prototype;
  var hasOwnProperty$6 = objectProto$6.hasOwnProperty;
  function initCloneArray(array) {
    var length = array.length, result = new array.constructor(length);
    if (length && typeof array[0] == "string" && hasOwnProperty$6.call(array, "index")) {
      result.index = array.index;
      result.input = array.input;
    }
    return result;
  }
  var Uint8Array = root$1.Uint8Array;
  const Uint8Array$1 = Uint8Array;
  function cloneArrayBuffer(arrayBuffer) {
    var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
    new Uint8Array$1(result).set(new Uint8Array$1(arrayBuffer));
    return result;
  }
  function cloneDataView(dataView, isDeep) {
    var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
    return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
  }
  var reFlags = /\w*$/;
  function cloneRegExp(regexp) {
    var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
    result.lastIndex = regexp.lastIndex;
    return result;
  }
  var symbolProto$1 = Symbol$2 ? Symbol$2.prototype : void 0, symbolValueOf$1 = symbolProto$1 ? symbolProto$1.valueOf : void 0;
  function cloneSymbol(symbol) {
    return symbolValueOf$1 ? Object(symbolValueOf$1.call(symbol)) : {};
  }
  function cloneTypedArray(typedArray, isDeep) {
    var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
    return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
  }
  var boolTag$2 = "[object Boolean]", dateTag$2 = "[object Date]", mapTag$4 = "[object Map]", numberTag$2 = "[object Number]", regexpTag$3 = "[object RegExp]", setTag$4 = "[object Set]", stringTag$3 = "[object String]", symbolTag$2 = "[object Symbol]";
  var arrayBufferTag$2 = "[object ArrayBuffer]", dataViewTag$2 = "[object DataView]", float32Tag$1 = "[object Float32Array]", float64Tag$1 = "[object Float64Array]", int8Tag$1 = "[object Int8Array]", int16Tag$1 = "[object Int16Array]", int32Tag$1 = "[object Int32Array]", uint8Tag$1 = "[object Uint8Array]", uint8ClampedTag$1 = "[object Uint8ClampedArray]", uint16Tag$1 = "[object Uint16Array]", uint32Tag$1 = "[object Uint32Array]";
  function initCloneByTag(object, tag, isDeep) {
    var Ctor = object.constructor;
    switch (tag) {
      case arrayBufferTag$2:
        return cloneArrayBuffer(object);
      case boolTag$2:
      case dateTag$2:
        return new Ctor(+object);
      case dataViewTag$2:
        return cloneDataView(object, isDeep);
      case float32Tag$1:
      case float64Tag$1:
      case int8Tag$1:
      case int16Tag$1:
      case int32Tag$1:
      case uint8Tag$1:
      case uint8ClampedTag$1:
      case uint16Tag$1:
      case uint32Tag$1:
        return cloneTypedArray(object, isDeep);
      case mapTag$4:
        return new Ctor();
      case numberTag$2:
      case stringTag$3:
        return new Ctor(object);
      case regexpTag$3:
        return cloneRegExp(object);
      case setTag$4:
        return new Ctor();
      case symbolTag$2:
        return cloneSymbol(object);
    }
  }
  function initCloneObject(object) {
    return typeof object.constructor == "function" && !isPrototype(object) ? baseCreate$1(getPrototype$1(object)) : {};
  }
  var mapTag$3 = "[object Map]";
  function baseIsMap(value) {
    return isObjectLike(value) && getTag$1(value) == mapTag$3;
  }
  var nodeIsMap = nodeUtil$1 && nodeUtil$1.isMap;
  var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;
  const isMap$1 = isMap;
  var setTag$3 = "[object Set]";
  function baseIsSet(value) {
    return isObjectLike(value) && getTag$1(value) == setTag$3;
  }
  var nodeIsSet = nodeUtil$1 && nodeUtil$1.isSet;
  var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;
  const isSet$1 = isSet;
  var CLONE_DEEP_FLAG = 1, CLONE_FLAT_FLAG = 2, CLONE_SYMBOLS_FLAG$1 = 4;
  var argsTag$1 = "[object Arguments]", arrayTag$1 = "[object Array]", boolTag$1 = "[object Boolean]", dateTag$1 = "[object Date]", errorTag$1 = "[object Error]", funcTag = "[object Function]", genTag = "[object GeneratorFunction]", mapTag$2 = "[object Map]", numberTag$1 = "[object Number]", objectTag$1 = "[object Object]", regexpTag$2 = "[object RegExp]", setTag$2 = "[object Set]", stringTag$2 = "[object String]", symbolTag$1 = "[object Symbol]", weakMapTag = "[object WeakMap]";
  var arrayBufferTag$1 = "[object ArrayBuffer]", dataViewTag$1 = "[object DataView]", float32Tag = "[object Float32Array]", float64Tag = "[object Float64Array]", int8Tag = "[object Int8Array]", int16Tag = "[object Int16Array]", int32Tag = "[object Int32Array]", uint8Tag = "[object Uint8Array]", uint8ClampedTag = "[object Uint8ClampedArray]", uint16Tag = "[object Uint16Array]", uint32Tag = "[object Uint32Array]";
  var cloneableTags = {};
  cloneableTags[argsTag$1] = cloneableTags[arrayTag$1] = cloneableTags[arrayBufferTag$1] = cloneableTags[dataViewTag$1] = cloneableTags[boolTag$1] = cloneableTags[dateTag$1] = cloneableTags[float32Tag] = cloneableTags[float64Tag] = cloneableTags[int8Tag] = cloneableTags[int16Tag] = cloneableTags[int32Tag] = cloneableTags[mapTag$2] = cloneableTags[numberTag$1] = cloneableTags[objectTag$1] = cloneableTags[regexpTag$2] = cloneableTags[setTag$2] = cloneableTags[stringTag$2] = cloneableTags[symbolTag$1] = cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
  cloneableTags[errorTag$1] = cloneableTags[funcTag] = cloneableTags[weakMapTag] = false;
  function baseClone(value, bitmask, customizer, key, object, stack) {
    var result, isDeep = bitmask & CLONE_DEEP_FLAG, isFlat = bitmask & CLONE_FLAT_FLAG, isFull = bitmask & CLONE_SYMBOLS_FLAG$1;
    if (customizer) {
      result = object ? customizer(value, key, object, stack) : customizer(value);
    }
    if (result !== void 0) {
      return result;
    }
    if (!isObject(value)) {
      return value;
    }
    var isArr = isArray$1(value);
    if (isArr) {
      result = initCloneArray(value);
      if (!isDeep) {
        return copyArray(value, result);
      }
    } else {
      var tag = getTag$1(value), isFunc = tag == funcTag || tag == genTag;
      if (isBuffer$1(value)) {
        return cloneBuffer(value, isDeep);
      }
      if (tag == objectTag$1 || tag == argsTag$1 || isFunc && !object) {
        result = isFlat || isFunc ? {} : initCloneObject(value);
        if (!isDeep) {
          return isFlat ? copySymbolsIn(value, baseAssignIn(result, value)) : copySymbols(value, baseAssign(result, value));
        }
      } else {
        if (!cloneableTags[tag]) {
          return object ? value : {};
        }
        result = initCloneByTag(value, tag, isDeep);
      }
    }
    stack || (stack = new Stack());
    var stacked = stack.get(value);
    if (stacked) {
      return stacked;
    }
    stack.set(value, result);
    if (isSet$1(value)) {
      value.forEach(function(subValue) {
        result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
      });
    } else if (isMap$1(value)) {
      value.forEach(function(subValue, key2) {
        result.set(key2, baseClone(subValue, bitmask, customizer, key2, value, stack));
      });
    }
    var keysFunc = isFull ? isFlat ? getAllKeysIn : getAllKeys : isFlat ? keysIn : keys;
    var props = isArr ? void 0 : keysFunc(value);
    arrayEach(props || value, function(subValue, key2) {
      if (props) {
        key2 = subValue;
        subValue = value[key2];
      }
      assignValue(result, key2, baseClone(subValue, bitmask, customizer, key2, value, stack));
    });
    return result;
  }
  var CLONE_SYMBOLS_FLAG = 4;
  function clone(value) {
    return baseClone(value, CLONE_SYMBOLS_FLAG);
  }
  function compact(array) {
    var index = -1, length = array == null ? 0 : array.length, resIndex = 0, result = [];
    while (++index < length) {
      var value = array[index];
      if (value) {
        result[resIndex++] = value;
      }
    }
    return result;
  }
  var HASH_UNDEFINED = "__lodash_hash_undefined__";
  function setCacheAdd(value) {
    this.__data__.set(value, HASH_UNDEFINED);
    return this;
  }
  function setCacheHas(value) {
    return this.__data__.has(value);
  }
  function SetCache(values2) {
    var index = -1, length = values2 == null ? 0 : values2.length;
    this.__data__ = new MapCache();
    while (++index < length) {
      this.add(values2[index]);
    }
  }
  SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
  SetCache.prototype.has = setCacheHas;
  function arraySome(array, predicate) {
    var index = -1, length = array == null ? 0 : array.length;
    while (++index < length) {
      if (predicate(array[index], index, array)) {
        return true;
      }
    }
    return false;
  }
  function cacheHas(cache, key) {
    return cache.has(key);
  }
  var COMPARE_PARTIAL_FLAG$5 = 1, COMPARE_UNORDERED_FLAG$3 = 2;
  function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
    var isPartial = bitmask & COMPARE_PARTIAL_FLAG$5, arrLength = array.length, othLength = other.length;
    if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
      return false;
    }
    var arrStacked = stack.get(array);
    var othStacked = stack.get(other);
    if (arrStacked && othStacked) {
      return arrStacked == other && othStacked == array;
    }
    var index = -1, result = true, seen = bitmask & COMPARE_UNORDERED_FLAG$3 ? new SetCache() : void 0;
    stack.set(array, other);
    stack.set(other, array);
    while (++index < arrLength) {
      var arrValue = array[index], othValue = other[index];
      if (customizer) {
        var compared = isPartial ? customizer(othValue, arrValue, index, other, array, stack) : customizer(arrValue, othValue, index, array, other, stack);
      }
      if (compared !== void 0) {
        if (compared) {
          continue;
        }
        result = false;
        break;
      }
      if (seen) {
        if (!arraySome(other, function(othValue2, othIndex) {
          if (!cacheHas(seen, othIndex) && (arrValue === othValue2 || equalFunc(arrValue, othValue2, bitmask, customizer, stack))) {
            return seen.push(othIndex);
          }
        })) {
          result = false;
          break;
        }
      } else if (!(arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
        result = false;
        break;
      }
    }
    stack["delete"](array);
    stack["delete"](other);
    return result;
  }
  function mapToArray(map2) {
    var index = -1, result = Array(map2.size);
    map2.forEach(function(value, key) {
      result[++index] = [key, value];
    });
    return result;
  }
  function setToArray(set) {
    var index = -1, result = Array(set.size);
    set.forEach(function(value) {
      result[++index] = value;
    });
    return result;
  }
  var COMPARE_PARTIAL_FLAG$4 = 1, COMPARE_UNORDERED_FLAG$2 = 2;
  var boolTag = "[object Boolean]", dateTag = "[object Date]", errorTag = "[object Error]", mapTag$1 = "[object Map]", numberTag = "[object Number]", regexpTag$1 = "[object RegExp]", setTag$1 = "[object Set]", stringTag$1 = "[object String]", symbolTag = "[object Symbol]";
  var arrayBufferTag = "[object ArrayBuffer]", dataViewTag = "[object DataView]";
  var symbolProto = Symbol$2 ? Symbol$2.prototype : void 0, symbolValueOf = symbolProto ? symbolProto.valueOf : void 0;
  function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
    switch (tag) {
      case dataViewTag:
        if (object.byteLength != other.byteLength || object.byteOffset != other.byteOffset) {
          return false;
        }
        object = object.buffer;
        other = other.buffer;
      case arrayBufferTag:
        if (object.byteLength != other.byteLength || !equalFunc(new Uint8Array$1(object), new Uint8Array$1(other))) {
          return false;
        }
        return true;
      case boolTag:
      case dateTag:
      case numberTag:
        return eq(+object, +other);
      case errorTag:
        return object.name == other.name && object.message == other.message;
      case regexpTag$1:
      case stringTag$1:
        return object == other + "";
      case mapTag$1:
        var convert = mapToArray;
      case setTag$1:
        var isPartial = bitmask & COMPARE_PARTIAL_FLAG$4;
        convert || (convert = setToArray);
        if (object.size != other.size && !isPartial) {
          return false;
        }
        var stacked = stack.get(object);
        if (stacked) {
          return stacked == other;
        }
        bitmask |= COMPARE_UNORDERED_FLAG$2;
        stack.set(object, other);
        var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
        stack["delete"](object);
        return result;
      case symbolTag:
        if (symbolValueOf) {
          return symbolValueOf.call(object) == symbolValueOf.call(other);
        }
    }
    return false;
  }
  var COMPARE_PARTIAL_FLAG$3 = 1;
  var objectProto$5 = Object.prototype;
  var hasOwnProperty$5 = objectProto$5.hasOwnProperty;
  function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
    var isPartial = bitmask & COMPARE_PARTIAL_FLAG$3, objProps = getAllKeys(object), objLength = objProps.length, othProps = getAllKeys(other), othLength = othProps.length;
    if (objLength != othLength && !isPartial) {
      return false;
    }
    var index = objLength;
    while (index--) {
      var key = objProps[index];
      if (!(isPartial ? key in other : hasOwnProperty$5.call(other, key))) {
        return false;
      }
    }
    var objStacked = stack.get(object);
    var othStacked = stack.get(other);
    if (objStacked && othStacked) {
      return objStacked == other && othStacked == object;
    }
    var result = true;
    stack.set(object, other);
    stack.set(other, object);
    var skipCtor = isPartial;
    while (++index < objLength) {
      key = objProps[index];
      var objValue = object[key], othValue = other[key];
      if (customizer) {
        var compared = isPartial ? customizer(othValue, objValue, key, other, object, stack) : customizer(objValue, othValue, key, object, other, stack);
      }
      if (!(compared === void 0 ? objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack) : compared)) {
        result = false;
        break;
      }
      skipCtor || (skipCtor = key == "constructor");
    }
    if (result && !skipCtor) {
      var objCtor = object.constructor, othCtor = other.constructor;
      if (objCtor != othCtor && "constructor" in object && "constructor" in other && !(typeof objCtor == "function" && objCtor instanceof objCtor && typeof othCtor == "function" && othCtor instanceof othCtor)) {
        result = false;
      }
    }
    stack["delete"](object);
    stack["delete"](other);
    return result;
  }
  var COMPARE_PARTIAL_FLAG$2 = 1;
  var argsTag = "[object Arguments]", arrayTag = "[object Array]", objectTag = "[object Object]";
  var objectProto$4 = Object.prototype;
  var hasOwnProperty$4 = objectProto$4.hasOwnProperty;
  function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
    var objIsArr = isArray$1(object), othIsArr = isArray$1(other), objTag = objIsArr ? arrayTag : getTag$1(object), othTag = othIsArr ? arrayTag : getTag$1(other);
    objTag = objTag == argsTag ? objectTag : objTag;
    othTag = othTag == argsTag ? objectTag : othTag;
    var objIsObj = objTag == objectTag, othIsObj = othTag == objectTag, isSameTag = objTag == othTag;
    if (isSameTag && isBuffer$1(object)) {
      if (!isBuffer$1(other)) {
        return false;
      }
      objIsArr = true;
      objIsObj = false;
    }
    if (isSameTag && !objIsObj) {
      stack || (stack = new Stack());
      return objIsArr || isTypedArray$1(object) ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
    }
    if (!(bitmask & COMPARE_PARTIAL_FLAG$2)) {
      var objIsWrapped = objIsObj && hasOwnProperty$4.call(object, "__wrapped__"), othIsWrapped = othIsObj && hasOwnProperty$4.call(other, "__wrapped__");
      if (objIsWrapped || othIsWrapped) {
        var objUnwrapped = objIsWrapped ? object.value() : object, othUnwrapped = othIsWrapped ? other.value() : other;
        stack || (stack = new Stack());
        return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
      }
    }
    if (!isSameTag) {
      return false;
    }
    stack || (stack = new Stack());
    return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
  }
  function baseIsEqual(value, other, bitmask, customizer, stack) {
    if (value === other) {
      return true;
    }
    if (value == null || other == null || !isObjectLike(value) && !isObjectLike(other)) {
      return value !== value && other !== other;
    }
    return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
  }
  var COMPARE_PARTIAL_FLAG$1 = 1, COMPARE_UNORDERED_FLAG$1 = 2;
  function baseIsMatch(object, source, matchData, customizer) {
    var index = matchData.length, length = index, noCustomizer = !customizer;
    if (object == null) {
      return !length;
    }
    object = Object(object);
    while (index--) {
      var data = matchData[index];
      if (noCustomizer && data[2] ? data[1] !== object[data[0]] : !(data[0] in object)) {
        return false;
      }
    }
    while (++index < length) {
      data = matchData[index];
      var key = data[0], objValue = object[key], srcValue = data[1];
      if (noCustomizer && data[2]) {
        if (objValue === void 0 && !(key in object)) {
          return false;
        }
      } else {
        var stack = new Stack();
        if (customizer) {
          var result = customizer(objValue, srcValue, key, object, source, stack);
        }
        if (!(result === void 0 ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG$1 | COMPARE_UNORDERED_FLAG$1, customizer, stack) : result)) {
          return false;
        }
      }
    }
    return true;
  }
  function isStrictComparable(value) {
    return value === value && !isObject(value);
  }
  function getMatchData(object) {
    var result = keys(object), length = result.length;
    while (length--) {
      var key = result[length], value = object[key];
      result[length] = [key, value, isStrictComparable(value)];
    }
    return result;
  }
  function matchesStrictComparable(key, srcValue) {
    return function(object) {
      if (object == null) {
        return false;
      }
      return object[key] === srcValue && (srcValue !== void 0 || key in Object(object));
    };
  }
  function baseMatches(source) {
    var matchData = getMatchData(source);
    if (matchData.length == 1 && matchData[0][2]) {
      return matchesStrictComparable(matchData[0][0], matchData[0][1]);
    }
    return function(object) {
      return object === source || baseIsMatch(object, source, matchData);
    };
  }
  function baseHasIn(object, key) {
    return object != null && key in Object(object);
  }
  function hasPath(object, path, hasFunc) {
    path = castPath(path, object);
    var index = -1, length = path.length, result = false;
    while (++index < length) {
      var key = toKey(path[index]);
      if (!(result = object != null && hasFunc(object, key))) {
        break;
      }
      object = object[key];
    }
    if (result || ++index != length) {
      return result;
    }
    length = object == null ? 0 : object.length;
    return !!length && isLength(length) && isIndex(key, length) && (isArray$1(object) || isArguments$1(object));
  }
  function hasIn(object, path) {
    return object != null && hasPath(object, path, baseHasIn);
  }
  var COMPARE_PARTIAL_FLAG = 1, COMPARE_UNORDERED_FLAG = 2;
  function baseMatchesProperty(path, srcValue) {
    if (isKey(path) && isStrictComparable(srcValue)) {
      return matchesStrictComparable(toKey(path), srcValue);
    }
    return function(object) {
      var objValue = get(object, path);
      return objValue === void 0 && objValue === srcValue ? hasIn(object, path) : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
    };
  }
  function baseProperty(key) {
    return function(object) {
      return object == null ? void 0 : object[key];
    };
  }
  function basePropertyDeep(path) {
    return function(object) {
      return baseGet(object, path);
    };
  }
  function property(path) {
    return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
  }
  function baseIteratee(value) {
    if (typeof value == "function") {
      return value;
    }
    if (value == null) {
      return identity;
    }
    if (typeof value == "object") {
      return isArray$1(value) ? baseMatchesProperty(value[0], value[1]) : baseMatches(value);
    }
    return property(value);
  }
  function arrayAggregator(array, setter, iteratee, accumulator) {
    var index = -1, length = array == null ? 0 : array.length;
    while (++index < length) {
      var value = array[index];
      setter(accumulator, value, iteratee(value), array);
    }
    return accumulator;
  }
  function createBaseFor(fromRight) {
    return function(object, iteratee, keysFunc) {
      var index = -1, iterable = Object(object), props = keysFunc(object), length = props.length;
      while (length--) {
        var key = props[fromRight ? length : ++index];
        if (iteratee(iterable[key], key, iterable) === false) {
          break;
        }
      }
      return object;
    };
  }
  var baseFor = createBaseFor();
  const baseFor$1 = baseFor;
  function baseForOwn(object, iteratee) {
    return object && baseFor$1(object, iteratee, keys);
  }
  function createBaseEach(eachFunc, fromRight) {
    return function(collection, iteratee) {
      if (collection == null) {
        return collection;
      }
      if (!isArrayLike(collection)) {
        return eachFunc(collection, iteratee);
      }
      var length = collection.length, index = fromRight ? length : -1, iterable = Object(collection);
      while (fromRight ? index-- : ++index < length) {
        if (iteratee(iterable[index], index, iterable) === false) {
          break;
        }
      }
      return collection;
    };
  }
  var baseEach = createBaseEach(baseForOwn);
  const baseEach$1 = baseEach;
  function baseAggregator(collection, setter, iteratee, accumulator) {
    baseEach$1(collection, function(value, key, collection2) {
      setter(accumulator, value, iteratee(value), collection2);
    });
    return accumulator;
  }
  function createAggregator(setter, initializer) {
    return function(collection, iteratee) {
      var func = isArray$1(collection) ? arrayAggregator : baseAggregator, accumulator = initializer ? initializer() : {};
      return func(collection, setter, baseIteratee(iteratee), accumulator);
    };
  }
  var objectProto$3 = Object.prototype;
  var hasOwnProperty$3 = objectProto$3.hasOwnProperty;
  var defaults = baseRest(function(object, sources) {
    object = Object(object);
    var index = -1;
    var length = sources.length;
    var guard = length > 2 ? sources[2] : void 0;
    if (guard && isIterateeCall(sources[0], sources[1], guard)) {
      length = 1;
    }
    while (++index < length) {
      var source = sources[index];
      var props = keysIn(source);
      var propsIndex = -1;
      var propsLength = props.length;
      while (++propsIndex < propsLength) {
        var key = props[propsIndex];
        var value = object[key];
        if (value === void 0 || eq(value, objectProto$3[key]) && !hasOwnProperty$3.call(object, key)) {
          object[key] = source[key];
        }
      }
    }
    return object;
  });
  const defaults$1 = defaults;
  function isArrayLikeObject(value) {
    return isObjectLike(value) && isArrayLike(value);
  }
  function arrayIncludesWith(array, value, comparator) {
    var index = -1, length = array == null ? 0 : array.length;
    while (++index < length) {
      if (comparator(value, array[index])) {
        return true;
      }
    }
    return false;
  }
  var LARGE_ARRAY_SIZE$1 = 200;
  function baseDifference(array, values2, iteratee, comparator) {
    var index = -1, includes2 = arrayIncludes, isCommon = true, length = array.length, result = [], valuesLength = values2.length;
    if (!length) {
      return result;
    }
    if (iteratee) {
      values2 = arrayMap(values2, baseUnary(iteratee));
    }
    if (comparator) {
      includes2 = arrayIncludesWith;
      isCommon = false;
    } else if (values2.length >= LARGE_ARRAY_SIZE$1) {
      includes2 = cacheHas;
      isCommon = false;
      values2 = new SetCache(values2);
    }
    outer:
      while (++index < length) {
        var value = array[index], computed = iteratee == null ? value : iteratee(value);
        value = comparator || value !== 0 ? value : 0;
        if (isCommon && computed === computed) {
          var valuesIndex = valuesLength;
          while (valuesIndex--) {
            if (values2[valuesIndex] === computed) {
              continue outer;
            }
          }
          result.push(value);
        } else if (!includes2(values2, computed, comparator)) {
          result.push(value);
        }
      }
    return result;
  }
  var difference = baseRest(function(array, values2) {
    return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values2, 1, isArrayLikeObject, true)) : [];
  });
  const difference$1 = difference;
  function last(array) {
    var length = array == null ? 0 : array.length;
    return length ? array[length - 1] : void 0;
  }
  function drop(array, n, guard) {
    var length = array == null ? 0 : array.length;
    if (!length) {
      return [];
    }
    n = guard || n === void 0 ? 1 : toInteger(n);
    return baseSlice(array, n < 0 ? 0 : n, length);
  }
  function dropRight(array, n, guard) {
    var length = array == null ? 0 : array.length;
    if (!length) {
      return [];
    }
    n = guard || n === void 0 ? 1 : toInteger(n);
    n = length - n;
    return baseSlice(array, 0, n < 0 ? 0 : n);
  }
  function castFunction(value) {
    return typeof value == "function" ? value : identity;
  }
  function forEach(collection, iteratee) {
    var func = isArray$1(collection) ? arrayEach : baseEach$1;
    return func(collection, castFunction(iteratee));
  }
  function arrayEvery(array, predicate) {
    var index = -1, length = array == null ? 0 : array.length;
    while (++index < length) {
      if (!predicate(array[index], index, array)) {
        return false;
      }
    }
    return true;
  }
  function baseEvery(collection, predicate) {
    var result = true;
    baseEach$1(collection, function(value, index, collection2) {
      result = !!predicate(value, index, collection2);
      return result;
    });
    return result;
  }
  function every(collection, predicate, guard) {
    var func = isArray$1(collection) ? arrayEvery : baseEvery;
    if (guard && isIterateeCall(collection, predicate, guard)) {
      predicate = void 0;
    }
    return func(collection, baseIteratee(predicate));
  }
  function baseFilter(collection, predicate) {
    var result = [];
    baseEach$1(collection, function(value, index, collection2) {
      if (predicate(value, index, collection2)) {
        result.push(value);
      }
    });
    return result;
  }
  function filter(collection, predicate) {
    var func = isArray$1(collection) ? arrayFilter : baseFilter;
    return func(collection, baseIteratee(predicate));
  }
  function createFind(findIndexFunc) {
    return function(collection, predicate, fromIndex) {
      var iterable = Object(collection);
      if (!isArrayLike(collection)) {
        var iteratee = baseIteratee(predicate);
        collection = keys(collection);
        predicate = function(key) {
          return iteratee(iterable[key], key, iterable);
        };
      }
      var index = findIndexFunc(collection, predicate, fromIndex);
      return index > -1 ? iterable[iteratee ? collection[index] : index] : void 0;
    };
  }
  var nativeMax$2 = Math.max;
  function findIndex(array, predicate, fromIndex) {
    var length = array == null ? 0 : array.length;
    if (!length) {
      return -1;
    }
    var index = fromIndex == null ? 0 : toInteger(fromIndex);
    if (index < 0) {
      index = nativeMax$2(length + index, 0);
    }
    return baseFindIndex(array, baseIteratee(predicate), index);
  }
  var find = createFind(findIndex);
  const find$1 = find;
  function head(array) {
    return array && array.length ? array[0] : void 0;
  }
  function baseMap(collection, iteratee) {
    var index = -1, result = isArrayLike(collection) ? Array(collection.length) : [];
    baseEach$1(collection, function(value, key, collection2) {
      result[++index] = iteratee(value, key, collection2);
    });
    return result;
  }
  function map(collection, iteratee) {
    var func = isArray$1(collection) ? arrayMap : baseMap;
    return func(collection, baseIteratee(iteratee));
  }
  function flatMap(collection, iteratee) {
    return baseFlatten(map(collection, iteratee), 1);
  }
  var objectProto$2 = Object.prototype;
  var hasOwnProperty$2 = objectProto$2.hasOwnProperty;
  var groupBy = createAggregator(function(result, value, key) {
    if (hasOwnProperty$2.call(result, key)) {
      result[key].push(value);
    } else {
      baseAssignValue(result, key, [value]);
    }
  });
  const groupBy$1 = groupBy;
  var objectProto$1 = Object.prototype;
  var hasOwnProperty$1 = objectProto$1.hasOwnProperty;
  function baseHas(object, key) {
    return object != null && hasOwnProperty$1.call(object, key);
  }
  function has(object, path) {
    return object != null && hasPath(object, path, baseHas);
  }
  var stringTag = "[object String]";
  function isString(value) {
    return typeof value == "string" || !isArray$1(value) && isObjectLike(value) && baseGetTag(value) == stringTag;
  }
  function baseValues(object, props) {
    return arrayMap(props, function(key) {
      return object[key];
    });
  }
  function values(object) {
    return object == null ? [] : baseValues(object, keys(object));
  }
  var nativeMax$1 = Math.max;
  function includes(collection, value, fromIndex, guard) {
    collection = isArrayLike(collection) ? collection : values(collection);
    fromIndex = fromIndex && !guard ? toInteger(fromIndex) : 0;
    var length = collection.length;
    if (fromIndex < 0) {
      fromIndex = nativeMax$1(length + fromIndex, 0);
    }
    return isString(collection) ? fromIndex <= length && collection.indexOf(value, fromIndex) > -1 : !!length && baseIndexOf(collection, value, fromIndex) > -1;
  }
  var nativeMax = Math.max;
  function indexOf(array, value, fromIndex) {
    var length = array == null ? 0 : array.length;
    if (!length) {
      return -1;
    }
    var index = fromIndex == null ? 0 : toInteger(fromIndex);
    if (index < 0) {
      index = nativeMax(length + index, 0);
    }
    return baseIndexOf(array, value, index);
  }
  var mapTag = "[object Map]", setTag = "[object Set]";
  var objectProto = Object.prototype;
  var hasOwnProperty = objectProto.hasOwnProperty;
  function isEmpty(value) {
    if (value == null) {
      return true;
    }
    if (isArrayLike(value) && (isArray$1(value) || typeof value == "string" || typeof value.splice == "function" || isBuffer$1(value) || isTypedArray$1(value) || isArguments$1(value))) {
      return !value.length;
    }
    var tag = getTag$1(value);
    if (tag == mapTag || tag == setTag) {
      return !value.size;
    }
    if (isPrototype(value)) {
      return !baseKeys(value).length;
    }
    for (var key in value) {
      if (hasOwnProperty.call(value, key)) {
        return false;
      }
    }
    return true;
  }
  var regexpTag = "[object RegExp]";
  function baseIsRegExp(value) {
    return isObjectLike(value) && baseGetTag(value) == regexpTag;
  }
  var nodeIsRegExp = nodeUtil$1 && nodeUtil$1.isRegExp;
  var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;
  const isRegExp$1 = isRegExp;
  function isUndefined(value) {
    return value === void 0;
  }
  var FUNC_ERROR_TEXT = "Expected a function";
  function negate(predicate) {
    if (typeof predicate != "function") {
      throw new TypeError(FUNC_ERROR_TEXT);
    }
    return function() {
      var args = arguments;
      switch (args.length) {
        case 0:
          return !predicate.call(this);
        case 1:
          return !predicate.call(this, args[0]);
        case 2:
          return !predicate.call(this, args[0], args[1]);
        case 3:
          return !predicate.call(this, args[0], args[1], args[2]);
      }
      return !predicate.apply(this, args);
    };
  }
  function baseSet(object, path, value, customizer) {
    if (!isObject(object)) {
      return object;
    }
    path = castPath(path, object);
    var index = -1, length = path.length, lastIndex = length - 1, nested = object;
    while (nested != null && ++index < length) {
      var key = toKey(path[index]), newValue = value;
      if (key === "__proto__" || key === "constructor" || key === "prototype") {
        return object;
      }
      if (index != lastIndex) {
        var objValue = nested[key];
        newValue = customizer ? customizer(objValue, key, nested) : void 0;
        if (newValue === void 0) {
          newValue = isObject(objValue) ? objValue : isIndex(path[index + 1]) ? [] : {};
        }
      }
      assignValue(nested, key, newValue);
      nested = nested[key];
    }
    return object;
  }
  function basePickBy(object, paths, predicate) {
    var index = -1, length = paths.length, result = {};
    while (++index < length) {
      var path = paths[index], value = baseGet(object, path);
      if (predicate(value, path)) {
        baseSet(result, castPath(path, object), value);
      }
    }
    return result;
  }
  function pickBy(object, predicate) {
    if (object == null) {
      return {};
    }
    var props = arrayMap(getAllKeysIn(object), function(prop) {
      return [prop];
    });
    predicate = baseIteratee(predicate);
    return basePickBy(object, props, function(value, path) {
      return predicate(value, path[0]);
    });
  }
  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
    eachFunc(collection, function(value, index, collection2) {
      accumulator = initAccum ? (initAccum = false, value) : iteratee(accumulator, value, index, collection2);
    });
    return accumulator;
  }
  function reduce(collection, iteratee, accumulator) {
    var func = isArray$1(collection) ? arrayReduce : baseReduce, initAccum = arguments.length < 3;
    return func(collection, baseIteratee(iteratee), accumulator, initAccum, baseEach$1);
  }
  function reject(collection, predicate) {
    var func = isArray$1(collection) ? arrayFilter : baseFilter;
    return func(collection, negate(baseIteratee(predicate)));
  }
  function baseSome(collection, predicate) {
    var result;
    baseEach$1(collection, function(value, index, collection2) {
      result = predicate(value, index, collection2);
      return !result;
    });
    return !!result;
  }
  function some(collection, predicate, guard) {
    var func = isArray$1(collection) ? arraySome : baseSome;
    if (guard && isIterateeCall(collection, predicate, guard)) {
      predicate = void 0;
    }
    return func(collection, baseIteratee(predicate));
  }
  var INFINITY = 1 / 0;
  var createSet = !(Set$1 && 1 / setToArray(new Set$1([, -0]))[1] == INFINITY) ? noop : function(values2) {
    return new Set$1(values2);
  };
  const createSet$1 = createSet;
  var LARGE_ARRAY_SIZE = 200;
  function baseUniq(array, iteratee, comparator) {
    var index = -1, includes2 = arrayIncludes, length = array.length, isCommon = true, result = [], seen = result;
    if (comparator) {
      isCommon = false;
      includes2 = arrayIncludesWith;
    } else if (length >= LARGE_ARRAY_SIZE) {
      var set = iteratee ? null : createSet$1(array);
      if (set) {
        return setToArray(set);
      }
      isCommon = false;
      includes2 = cacheHas;
      seen = new SetCache();
    } else {
      seen = iteratee ? [] : result;
    }
    outer:
      while (++index < length) {
        var value = array[index], computed = iteratee ? iteratee(value) : value;
        value = comparator || value !== 0 ? value : 0;
        if (isCommon && computed === computed) {
          var seenIndex = seen.length;
          while (seenIndex--) {
            if (seen[seenIndex] === computed) {
              continue outer;
            }
          }
          if (iteratee) {
            seen.push(computed);
          }
          result.push(value);
        } else if (!includes2(seen, computed, comparator)) {
          if (seen !== result) {
            seen.push(computed);
          }
          result.push(value);
        }
      }
    return result;
  }
  function uniq(array) {
    return array && array.length ? baseUniq(array) : [];
  }
  function PRINT_ERROR(msg) {
    if (console && console.error) {
      console.error(`Error: ${msg}`);
    }
  }
  function PRINT_WARNING(msg) {
    if (console && console.warn) {
      console.warn(`Warning: ${msg}`);
    }
  }
  function timer(func) {
    const start = (/* @__PURE__ */ new Date()).getTime();
    const val = func();
    const end = (/* @__PURE__ */ new Date()).getTime();
    const total = end - start;
    return { time: total, value: val };
  }
  function toFastProperties(toBecomeFast) {
    function FakeConstructor() {
    }
    FakeConstructor.prototype = toBecomeFast;
    const fakeInstance = new FakeConstructor();
    function fakeAccess() {
      return typeof fakeInstance.bar;
    }
    fakeAccess();
    fakeAccess();
    return toBecomeFast;
  }
  function tokenLabel$1(tokType) {
    if (hasTokenLabel$1(tokType)) {
      return tokType.LABEL;
    } else {
      return tokType.name;
    }
  }
  function hasTokenLabel$1(obj) {
    return isString(obj.LABEL) && obj.LABEL !== "";
  }
  class AbstractProduction {
    get definition() {
      return this._definition;
    }
    set definition(value) {
      this._definition = value;
    }
    constructor(_definition) {
      this._definition = _definition;
    }
    accept(visitor) {
      visitor.visit(this);
      forEach(this.definition, (prod) => {
        prod.accept(visitor);
      });
    }
  }
  class NonTerminal extends AbstractProduction {
    constructor(options) {
      super([]);
      this.idx = 1;
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
    set definition(definition) {
    }
    get definition() {
      if (this.referencedRule !== void 0) {
        return this.referencedRule.definition;
      }
      return [];
    }
    accept(visitor) {
      visitor.visit(this);
    }
  }
  class Rule extends AbstractProduction {
    constructor(options) {
      super(options.definition);
      this.orgText = "";
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
  }
  class Alternative extends AbstractProduction {
    constructor(options) {
      super(options.definition);
      this.ignoreAmbiguities = false;
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
  }
  class Option extends AbstractProduction {
    constructor(options) {
      super(options.definition);
      this.idx = 1;
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
  }
  class RepetitionMandatory extends AbstractProduction {
    constructor(options) {
      super(options.definition);
      this.idx = 1;
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
  }
  class RepetitionMandatoryWithSeparator extends AbstractProduction {
    constructor(options) {
      super(options.definition);
      this.idx = 1;
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
  }
  class Repetition extends AbstractProduction {
    constructor(options) {
      super(options.definition);
      this.idx = 1;
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
  }
  class RepetitionWithSeparator extends AbstractProduction {
    constructor(options) {
      super(options.definition);
      this.idx = 1;
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
  }
  class Alternation extends AbstractProduction {
    get definition() {
      return this._definition;
    }
    set definition(value) {
      this._definition = value;
    }
    constructor(options) {
      super(options.definition);
      this.idx = 1;
      this.ignoreAmbiguities = false;
      this.hasPredicates = false;
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
  }
  class Terminal {
    constructor(options) {
      this.idx = 1;
      assign$1(
        this,
        pickBy(options, (v) => v !== void 0)
      );
    }
    accept(visitor) {
      visitor.visit(this);
    }
  }
  function serializeGrammar(topRules) {
    return map(topRules, serializeProduction);
  }
  function serializeProduction(node) {
    function convertDefinition(definition) {
      return map(definition, serializeProduction);
    }
    if (node instanceof NonTerminal) {
      const serializedNonTerminal = {
        type: "NonTerminal",
        name: node.nonTerminalName,
        idx: node.idx
      };
      if (isString(node.label)) {
        serializedNonTerminal.label = node.label;
      }
      return serializedNonTerminal;
    } else if (node instanceof Alternative) {
      return {
        type: "Alternative",
        definition: convertDefinition(node.definition)
      };
    } else if (node instanceof Option) {
      return {
        type: "Option",
        idx: node.idx,
        definition: convertDefinition(node.definition)
      };
    } else if (node instanceof RepetitionMandatory) {
      return {
        type: "RepetitionMandatory",
        idx: node.idx,
        definition: convertDefinition(node.definition)
      };
    } else if (node instanceof RepetitionMandatoryWithSeparator) {
      return {
        type: "RepetitionMandatoryWithSeparator",
        idx: node.idx,
        separator: serializeProduction(new Terminal({ terminalType: node.separator })),
        definition: convertDefinition(node.definition)
      };
    } else if (node instanceof RepetitionWithSeparator) {
      return {
        type: "RepetitionWithSeparator",
        idx: node.idx,
        separator: serializeProduction(new Terminal({ terminalType: node.separator })),
        definition: convertDefinition(node.definition)
      };
    } else if (node instanceof Repetition) {
      return {
        type: "Repetition",
        idx: node.idx,
        definition: convertDefinition(node.definition)
      };
    } else if (node instanceof Alternation) {
      return {
        type: "Alternation",
        idx: node.idx,
        definition: convertDefinition(node.definition)
      };
    } else if (node instanceof Terminal) {
      const serializedTerminal = {
        type: "Terminal",
        name: node.terminalType.name,
        label: tokenLabel$1(node.terminalType),
        idx: node.idx
      };
      if (isString(node.label)) {
        serializedTerminal.terminalLabel = node.label;
      }
      const pattern = node.terminalType.PATTERN;
      if (node.terminalType.PATTERN) {
        serializedTerminal.pattern = isRegExp$1(pattern) ? pattern.source : pattern;
      }
      return serializedTerminal;
    } else if (node instanceof Rule) {
      return {
        type: "Rule",
        name: node.name,
        orgText: node.orgText,
        definition: convertDefinition(node.definition)
      };
    } else {
      throw Error("non exhaustive match");
    }
  }
  class GAstVisitor {
    visit(node) {
      const nodeAny = node;
      switch (nodeAny.constructor) {
        case NonTerminal:
          return this.visitNonTerminal(nodeAny);
        case Alternative:
          return this.visitAlternative(nodeAny);
        case Option:
          return this.visitOption(nodeAny);
        case RepetitionMandatory:
          return this.visitRepetitionMandatory(nodeAny);
        case RepetitionMandatoryWithSeparator:
          return this.visitRepetitionMandatoryWithSeparator(nodeAny);
        case RepetitionWithSeparator:
          return this.visitRepetitionWithSeparator(nodeAny);
        case Repetition:
          return this.visitRepetition(nodeAny);
        case Alternation:
          return this.visitAlternation(nodeAny);
        case Terminal:
          return this.visitTerminal(nodeAny);
        case Rule:
          return this.visitRule(nodeAny);
        default:
          throw Error("non exhaustive match");
      }
    }
    /* c8 ignore next */
    visitNonTerminal(node) {
    }
    /* c8 ignore next */
    visitAlternative(node) {
    }
    /* c8 ignore next */
    visitOption(node) {
    }
    /* c8 ignore next */
    visitRepetition(node) {
    }
    /* c8 ignore next */
    visitRepetitionMandatory(node) {
    }
    /* c8 ignore next 3 */
    visitRepetitionMandatoryWithSeparator(node) {
    }
    /* c8 ignore next */
    visitRepetitionWithSeparator(node) {
    }
    /* c8 ignore next */
    visitAlternation(node) {
    }
    /* c8 ignore next */
    visitTerminal(node) {
    }
    /* c8 ignore next */
    visitRule(node) {
    }
  }
  function isSequenceProd(prod) {
    return prod instanceof Alternative || prod instanceof Option || prod instanceof Repetition || prod instanceof RepetitionMandatory || prod instanceof RepetitionMandatoryWithSeparator || prod instanceof RepetitionWithSeparator || prod instanceof Terminal || prod instanceof Rule;
  }
  function isOptionalProd(prod, alreadyVisited = []) {
    const isDirectlyOptional = prod instanceof Option || prod instanceof Repetition || prod instanceof RepetitionWithSeparator;
    if (isDirectlyOptional) {
      return true;
    }
    if (prod instanceof Alternation) {
      return some(prod.definition, (subProd) => {
        return isOptionalProd(subProd, alreadyVisited);
      });
    } else if (prod instanceof NonTerminal && includes(alreadyVisited, prod)) {
      return false;
    } else if (prod instanceof AbstractProduction) {
      if (prod instanceof NonTerminal) {
        alreadyVisited.push(prod);
      }
      return every(prod.definition, (subProd) => {
        return isOptionalProd(subProd, alreadyVisited);
      });
    } else {
      return false;
    }
  }
  function isBranchingProd(prod) {
    return prod instanceof Alternation;
  }
  function getProductionDslName(prod) {
    if (prod instanceof NonTerminal) {
      return "SUBRULE";
    } else if (prod instanceof Option) {
      return "OPTION";
    } else if (prod instanceof Alternation) {
      return "OR";
    } else if (prod instanceof RepetitionMandatory) {
      return "AT_LEAST_ONE";
    } else if (prod instanceof RepetitionMandatoryWithSeparator) {
      return "AT_LEAST_ONE_SEP";
    } else if (prod instanceof RepetitionWithSeparator) {
      return "MANY_SEP";
    } else if (prod instanceof Repetition) {
      return "MANY";
    } else if (prod instanceof Terminal) {
      return "CONSUME";
    } else {
      throw Error("non exhaustive match");
    }
  }
  class RestWalker {
    walk(prod, prevRest = []) {
      forEach(prod.definition, (subProd, index) => {
        const currRest = drop(prod.definition, index + 1);
        if (subProd instanceof NonTerminal) {
          this.walkProdRef(subProd, currRest, prevRest);
        } else if (subProd instanceof Terminal) {
          this.walkTerminal(subProd, currRest, prevRest);
        } else if (subProd instanceof Alternative) {
          this.walkFlat(subProd, currRest, prevRest);
        } else if (subProd instanceof Option) {
          this.walkOption(subProd, currRest, prevRest);
        } else if (subProd instanceof RepetitionMandatory) {
          this.walkAtLeastOne(subProd, currRest, prevRest);
        } else if (subProd instanceof RepetitionMandatoryWithSeparator) {
          this.walkAtLeastOneSep(subProd, currRest, prevRest);
        } else if (subProd instanceof RepetitionWithSeparator) {
          this.walkManySep(subProd, currRest, prevRest);
        } else if (subProd instanceof Repetition) {
          this.walkMany(subProd, currRest, prevRest);
        } else if (subProd instanceof Alternation) {
          this.walkOr(subProd, currRest, prevRest);
        } else {
          throw Error("non exhaustive match");
        }
      });
    }
    walkTerminal(terminal, currRest, prevRest) {
    }
    walkProdRef(refProd, currRest, prevRest) {
    }
    walkFlat(flatProd, currRest, prevRest) {
      const fullOrRest = currRest.concat(prevRest);
      this.walk(flatProd, fullOrRest);
    }
    walkOption(optionProd, currRest, prevRest) {
      const fullOrRest = currRest.concat(prevRest);
      this.walk(optionProd, fullOrRest);
    }
    walkAtLeastOne(atLeastOneProd, currRest, prevRest) {
      const fullAtLeastOneRest = [new Option({ definition: atLeastOneProd.definition })].concat(currRest, prevRest);
      this.walk(atLeastOneProd, fullAtLeastOneRest);
    }
    walkAtLeastOneSep(atLeastOneSepProd, currRest, prevRest) {
      const fullAtLeastOneSepRest = restForRepetitionWithSeparator(atLeastOneSepProd, currRest, prevRest);
      this.walk(atLeastOneSepProd, fullAtLeastOneSepRest);
    }
    walkMany(manyProd, currRest, prevRest) {
      const fullManyRest = [new Option({ definition: manyProd.definition })].concat(currRest, prevRest);
      this.walk(manyProd, fullManyRest);
    }
    walkManySep(manySepProd, currRest, prevRest) {
      const fullManySepRest = restForRepetitionWithSeparator(manySepProd, currRest, prevRest);
      this.walk(manySepProd, fullManySepRest);
    }
    walkOr(orProd, currRest, prevRest) {
      const fullOrRest = currRest.concat(prevRest);
      forEach(orProd.definition, (alt) => {
        const prodWrapper = new Alternative({ definition: [alt] });
        this.walk(prodWrapper, fullOrRest);
      });
    }
  }
  function restForRepetitionWithSeparator(repSepProd, currRest, prevRest) {
    const repSepRest = [
      new Option({
        definition: [new Terminal({ terminalType: repSepProd.separator })].concat(repSepProd.definition)
      })
    ];
    const fullRepSepRest = repSepRest.concat(currRest, prevRest);
    return fullRepSepRest;
  }
  function first(prod) {
    if (prod instanceof NonTerminal) {
      return first(prod.referencedRule);
    } else if (prod instanceof Terminal) {
      return firstForTerminal(prod);
    } else if (isSequenceProd(prod)) {
      return firstForSequence(prod);
    } else if (isBranchingProd(prod)) {
      return firstForBranching(prod);
    } else {
      throw Error("non exhaustive match");
    }
  }
  function firstForSequence(prod) {
    let firstSet = [];
    const seq = prod.definition;
    let nextSubProdIdx = 0;
    let hasInnerProdsRemaining = seq.length > nextSubProdIdx;
    let currSubProd;
    let isLastInnerProdOptional = true;
    while (hasInnerProdsRemaining && isLastInnerProdOptional) {
      currSubProd = seq[nextSubProdIdx];
      isLastInnerProdOptional = isOptionalProd(currSubProd);
      firstSet = firstSet.concat(first(currSubProd));
      nextSubProdIdx = nextSubProdIdx + 1;
      hasInnerProdsRemaining = seq.length > nextSubProdIdx;
    }
    return uniq(firstSet);
  }
  function firstForBranching(prod) {
    const allAlternativesFirsts = map(prod.definition, (innerProd) => {
      return first(innerProd);
    });
    return uniq(flatten(allAlternativesFirsts));
  }
  function firstForTerminal(terminal) {
    return [terminal.terminalType];
  }
  const IN = "_~IN~_";
  class ResyncFollowsWalker extends RestWalker {
    constructor(topProd) {
      super();
      this.topProd = topProd;
      this.follows = {};
    }
    startWalking() {
      this.walk(this.topProd);
      return this.follows;
    }
    walkTerminal(terminal, currRest, prevRest) {
    }
    walkProdRef(refProd, currRest, prevRest) {
      const followName = buildBetweenProdsFollowPrefix(refProd.referencedRule, refProd.idx) + this.topProd.name;
      const fullRest = currRest.concat(prevRest);
      const restProd = new Alternative({ definition: fullRest });
      const t_in_topProd_follows = first(restProd);
      this.follows[followName] = t_in_topProd_follows;
    }
  }
  function computeAllProdsFollows(topProductions) {
    const reSyncFollows = {};
    forEach(topProductions, (topProd) => {
      const currRefsFollow = new ResyncFollowsWalker(topProd).startWalking();
      assign$1(reSyncFollows, currRefsFollow);
    });
    return reSyncFollows;
  }
  function buildBetweenProdsFollowPrefix(inner, occurenceInParent) {
    return inner.name + occurenceInParent + IN;
  }
  function cc(char) {
    return char.charCodeAt(0);
  }
  function insertToSet(item, set) {
    if (Array.isArray(item)) {
      item.forEach(function(subItem) {
        set.push(subItem);
      });
    } else {
      set.push(item);
    }
  }
  function addFlag(flagObj, flagKey) {
    if (flagObj[flagKey] === true) {
      throw "duplicate flag " + flagKey;
    }
    flagObj[flagKey];
    flagObj[flagKey] = true;
  }
  function ASSERT_EXISTS(obj) {
    if (obj === void 0) {
      throw Error("Internal Error - Should never get here!");
    }
    return true;
  }
  function ASSERT_NEVER_REACH_HERE() {
    throw Error("Internal Error - Should never get here!");
  }
  function isCharacter(obj) {
    return obj["type"] === "Character";
  }
  const digitsCharCodes = [];
  for (let i = cc("0"); i <= cc("9"); i++) {
    digitsCharCodes.push(i);
  }
  const wordCharCodes = [cc("_")].concat(digitsCharCodes);
  for (let i = cc("a"); i <= cc("z"); i++) {
    wordCharCodes.push(i);
  }
  for (let i = cc("A"); i <= cc("Z"); i++) {
    wordCharCodes.push(i);
  }
  const whitespaceCodes = [
    cc(" "),
    cc("\f"),
    cc("\n"),
    cc("\r"),
    cc("	"),
    cc("\v"),
    cc("	"),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc(" "),
    cc("\u2028"),
    cc("\u2029"),
    cc(" "),
    cc(" "),
    cc("　"),
    cc("\uFEFF")
  ];
  const hexDigitPattern = /[0-9a-fA-F]/;
  const decimalPattern = /[0-9]/;
  const decimalPatternNoZero = /[1-9]/;
  class RegExpParser {
    constructor() {
      this.idx = 0;
      this.input = "";
      this.groupIdx = 0;
    }
    saveState() {
      return {
        idx: this.idx,
        input: this.input,
        groupIdx: this.groupIdx
      };
    }
    restoreState(newState) {
      this.idx = newState.idx;
      this.input = newState.input;
      this.groupIdx = newState.groupIdx;
    }
    pattern(input) {
      this.idx = 0;
      this.input = input;
      this.groupIdx = 0;
      this.consumeChar("/");
      const value = this.disjunction();
      this.consumeChar("/");
      const flags = {
        type: "Flags",
        loc: { begin: this.idx, end: input.length },
        global: false,
        ignoreCase: false,
        multiLine: false,
        unicode: false,
        sticky: false
      };
      while (this.isRegExpFlag()) {
        switch (this.popChar()) {
          case "g":
            addFlag(flags, "global");
            break;
          case "i":
            addFlag(flags, "ignoreCase");
            break;
          case "m":
            addFlag(flags, "multiLine");
            break;
          case "u":
            addFlag(flags, "unicode");
            break;
          case "y":
            addFlag(flags, "sticky");
            break;
        }
      }
      if (this.idx !== this.input.length) {
        throw Error("Redundant input: " + this.input.substring(this.idx));
      }
      return {
        type: "Pattern",
        flags,
        value,
        loc: this.loc(0)
      };
    }
    disjunction() {
      const alts = [];
      const begin = this.idx;
      alts.push(this.alternative());
      while (this.peekChar() === "|") {
        this.consumeChar("|");
        alts.push(this.alternative());
      }
      return { type: "Disjunction", value: alts, loc: this.loc(begin) };
    }
    alternative() {
      const terms = [];
      const begin = this.idx;
      while (this.isTerm()) {
        terms.push(this.term());
      }
      return { type: "Alternative", value: terms, loc: this.loc(begin) };
    }
    term() {
      if (this.isAssertion()) {
        return this.assertion();
      } else {
        return this.atom();
      }
    }
    assertion() {
      const begin = this.idx;
      switch (this.popChar()) {
        case "^":
          return {
            type: "StartAnchor",
            loc: this.loc(begin)
          };
        case "$":
          return { type: "EndAnchor", loc: this.loc(begin) };
        case "\\":
          switch (this.popChar()) {
            case "b":
              return {
                type: "WordBoundary",
                loc: this.loc(begin)
              };
            case "B":
              return {
                type: "NonWordBoundary",
                loc: this.loc(begin)
              };
          }
          throw Error("Invalid Assertion Escape");
        case "(":
          this.consumeChar("?");
          let type;
          switch (this.popChar()) {
            case "=":
              type = "Lookahead";
              break;
            case "!":
              type = "NegativeLookahead";
              break;
          }
          ASSERT_EXISTS(type);
          const disjunction = this.disjunction();
          this.consumeChar(")");
          return {
            type,
            value: disjunction,
            loc: this.loc(begin)
          };
      }
      return ASSERT_NEVER_REACH_HERE();
    }
    quantifier(isBacktracking = false) {
      let range = void 0;
      const begin = this.idx;
      switch (this.popChar()) {
        case "*":
          range = {
            atLeast: 0,
            atMost: Infinity
          };
          break;
        case "+":
          range = {
            atLeast: 1,
            atMost: Infinity
          };
          break;
        case "?":
          range = {
            atLeast: 0,
            atMost: 1
          };
          break;
        case "{":
          const atLeast = this.integerIncludingZero();
          switch (this.popChar()) {
            case "}":
              range = {
                atLeast,
                atMost: atLeast
              };
              break;
            case ",":
              let atMost;
              if (this.isDigit()) {
                atMost = this.integerIncludingZero();
                range = {
                  atLeast,
                  atMost
                };
              } else {
                range = {
                  atLeast,
                  atMost: Infinity
                };
              }
              this.consumeChar("}");
              break;
          }
          if (isBacktracking === true && range === void 0) {
            return void 0;
          }
          ASSERT_EXISTS(range);
          break;
      }
      if (isBacktracking === true && range === void 0) {
        return void 0;
      }
      if (ASSERT_EXISTS(range)) {
        if (this.peekChar(0) === "?") {
          this.consumeChar("?");
          range.greedy = false;
        } else {
          range.greedy = true;
        }
        range.type = "Quantifier";
        range.loc = this.loc(begin);
        return range;
      }
    }
    atom() {
      let atom;
      const begin = this.idx;
      switch (this.peekChar()) {
        case ".":
          atom = this.dotAll();
          break;
        case "\\":
          atom = this.atomEscape();
          break;
        case "[":
          atom = this.characterClass();
          break;
        case "(":
          atom = this.group();
          break;
      }
      if (atom === void 0 && this.isPatternCharacter()) {
        atom = this.patternCharacter();
      }
      if (ASSERT_EXISTS(atom)) {
        atom.loc = this.loc(begin);
        if (this.isQuantifier()) {
          atom.quantifier = this.quantifier();
        }
        return atom;
      }
    }
    dotAll() {
      this.consumeChar(".");
      return {
        type: "Set",
        complement: true,
        value: [cc("\n"), cc("\r"), cc("\u2028"), cc("\u2029")]
      };
    }
    atomEscape() {
      this.consumeChar("\\");
      switch (this.peekChar()) {
        case "1":
        case "2":
        case "3":
        case "4":
        case "5":
        case "6":
        case "7":
        case "8":
        case "9":
          return this.decimalEscapeAtom();
        case "d":
        case "D":
        case "s":
        case "S":
        case "w":
        case "W":
          return this.characterClassEscape();
        case "f":
        case "n":
        case "r":
        case "t":
        case "v":
          return this.controlEscapeAtom();
        case "c":
          return this.controlLetterEscapeAtom();
        case "0":
          return this.nulCharacterAtom();
        case "x":
          return this.hexEscapeSequenceAtom();
        case "u":
          return this.regExpUnicodeEscapeSequenceAtom();
        default:
          return this.identityEscapeAtom();
      }
    }
    decimalEscapeAtom() {
      const value = this.positiveInteger();
      return { type: "GroupBackReference", value };
    }
    characterClassEscape() {
      let set;
      let complement = false;
      switch (this.popChar()) {
        case "d":
          set = digitsCharCodes;
          break;
        case "D":
          set = digitsCharCodes;
          complement = true;
          break;
        case "s":
          set = whitespaceCodes;
          break;
        case "S":
          set = whitespaceCodes;
          complement = true;
          break;
        case "w":
          set = wordCharCodes;
          break;
        case "W":
          set = wordCharCodes;
          complement = true;
          break;
      }
      if (ASSERT_EXISTS(set)) {
        return { type: "Set", value: set, complement };
      }
    }
    controlEscapeAtom() {
      let escapeCode;
      switch (this.popChar()) {
        case "f":
          escapeCode = cc("\f");
          break;
        case "n":
          escapeCode = cc("\n");
          break;
        case "r":
          escapeCode = cc("\r");
          break;
        case "t":
          escapeCode = cc("	");
          break;
        case "v":
          escapeCode = cc("\v");
          break;
      }
      if (ASSERT_EXISTS(escapeCode)) {
        return { type: "Character", value: escapeCode };
      }
    }
    controlLetterEscapeAtom() {
      this.consumeChar("c");
      const letter = this.popChar();
      if (/[a-zA-Z]/.test(letter) === false) {
        throw Error("Invalid ");
      }
      const letterCode = letter.toUpperCase().charCodeAt(0) - 64;
      return { type: "Character", value: letterCode };
    }
    nulCharacterAtom() {
      this.consumeChar("0");
      return { type: "Character", value: cc("\0") };
    }
    hexEscapeSequenceAtom() {
      this.consumeChar("x");
      return this.parseHexDigits(2);
    }
    regExpUnicodeEscapeSequenceAtom() {
      this.consumeChar("u");
      return this.parseHexDigits(4);
    }
    identityEscapeAtom() {
      const escapedChar = this.popChar();
      return { type: "Character", value: cc(escapedChar) };
    }
    classPatternCharacterAtom() {
      switch (this.peekChar()) {
        case "\n":
        case "\r":
        case "\u2028":
        case "\u2029":
        case "\\":
        case "]":
          throw Error("TBD");
        default:
          const nextChar = this.popChar();
          return { type: "Character", value: cc(nextChar) };
      }
    }
    characterClass() {
      const set = [];
      let complement = false;
      this.consumeChar("[");
      if (this.peekChar(0) === "^") {
        this.consumeChar("^");
        complement = true;
      }
      while (this.isClassAtom()) {
        const from = this.classAtom();
        from.type === "Character";
        if (isCharacter(from) && this.isRangeDash()) {
          this.consumeChar("-");
          const to = this.classAtom();
          to.type === "Character";
          if (isCharacter(to)) {
            if (to.value < from.value) {
              throw Error("Range out of order in character class");
            }
            set.push({ from: from.value, to: to.value });
          } else {
            insertToSet(from.value, set);
            set.push(cc("-"));
            insertToSet(to.value, set);
          }
        } else {
          insertToSet(from.value, set);
        }
      }
      this.consumeChar("]");
      return { type: "Set", complement, value: set };
    }
    classAtom() {
      switch (this.peekChar()) {
        case "]":
        case "\n":
        case "\r":
        case "\u2028":
        case "\u2029":
          throw Error("TBD");
        case "\\":
          return this.classEscape();
        default:
          return this.classPatternCharacterAtom();
      }
    }
    classEscape() {
      this.consumeChar("\\");
      switch (this.peekChar()) {
        case "b":
          this.consumeChar("b");
          return { type: "Character", value: cc("\b") };
        case "d":
        case "D":
        case "s":
        case "S":
        case "w":
        case "W":
          return this.characterClassEscape();
        case "f":
        case "n":
        case "r":
        case "t":
        case "v":
          return this.controlEscapeAtom();
        case "c":
          return this.controlLetterEscapeAtom();
        case "0":
          return this.nulCharacterAtom();
        case "x":
          return this.hexEscapeSequenceAtom();
        case "u":
          return this.regExpUnicodeEscapeSequenceAtom();
        default:
          return this.identityEscapeAtom();
      }
    }
    group() {
      let capturing = true;
      this.consumeChar("(");
      switch (this.peekChar(0)) {
        case "?":
          this.consumeChar("?");
          this.consumeChar(":");
          capturing = false;
          break;
        default:
          this.groupIdx++;
          break;
      }
      const value = this.disjunction();
      this.consumeChar(")");
      const groupAst = {
        type: "Group",
        capturing,
        value
      };
      if (capturing) {
        groupAst["idx"] = this.groupIdx;
      }
      return groupAst;
    }
    positiveInteger() {
      let number = this.popChar();
      if (decimalPatternNoZero.test(number) === false) {
        throw Error("Expecting a positive integer");
      }
      while (decimalPattern.test(this.peekChar(0))) {
        number += this.popChar();
      }
      return parseInt(number, 10);
    }
    integerIncludingZero() {
      let number = this.popChar();
      if (decimalPattern.test(number) === false) {
        throw Error("Expecting an integer");
      }
      while (decimalPattern.test(this.peekChar(0))) {
        number += this.popChar();
      }
      return parseInt(number, 10);
    }
    patternCharacter() {
      const nextChar = this.popChar();
      switch (nextChar) {
        case "\n":
        case "\r":
        case "\u2028":
        case "\u2029":
        case "^":
        case "$":
        case "\\":
        case ".":
        case "*":
        case "+":
        case "?":
        case "(":
        case ")":
        case "[":
        case "|":
          throw Error("TBD");
        default:
          return { type: "Character", value: cc(nextChar) };
      }
    }
    isRegExpFlag() {
      switch (this.peekChar(0)) {
        case "g":
        case "i":
        case "m":
        case "u":
        case "y":
          return true;
        default:
          return false;
      }
    }
    isRangeDash() {
      return this.peekChar() === "-" && this.isClassAtom(1);
    }
    isDigit() {
      return decimalPattern.test(this.peekChar(0));
    }
    isClassAtom(howMuch = 0) {
      switch (this.peekChar(howMuch)) {
        case "]":
        case "\n":
        case "\r":
        case "\u2028":
        case "\u2029":
          return false;
        default:
          return true;
      }
    }
    isTerm() {
      return this.isAtom() || this.isAssertion();
    }
    isAtom() {
      if (this.isPatternCharacter()) {
        return true;
      }
      switch (this.peekChar(0)) {
        case ".":
        case "\\":
        case "[":
        case "(":
          return true;
        default:
          return false;
      }
    }
    isAssertion() {
      switch (this.peekChar(0)) {
        case "^":
        case "$":
          return true;
        case "\\":
          switch (this.peekChar(1)) {
            case "b":
            case "B":
              return true;
            default:
              return false;
          }
        case "(":
          return this.peekChar(1) === "?" && (this.peekChar(2) === "=" || this.peekChar(2) === "!");
        default:
          return false;
      }
    }
    isQuantifier() {
      const prevState = this.saveState();
      try {
        return this.quantifier(true) !== void 0;
      } catch (e) {
        return false;
      } finally {
        this.restoreState(prevState);
      }
    }
    isPatternCharacter() {
      switch (this.peekChar()) {
        case "^":
        case "$":
        case "\\":
        case ".":
        case "*":
        case "+":
        case "?":
        case "(":
        case ")":
        case "[":
        case "|":
        case "/":
        case "\n":
        case "\r":
        case "\u2028":
        case "\u2029":
          return false;
        default:
          return true;
      }
    }
    parseHexDigits(howMany) {
      let hexString = "";
      for (let i = 0; i < howMany; i++) {
        const hexChar = this.popChar();
        if (hexDigitPattern.test(hexChar) === false) {
          throw Error("Expecting a HexDecimal digits");
        }
        hexString += hexChar;
      }
      const charCode = parseInt(hexString, 16);
      return { type: "Character", value: charCode };
    }
    peekChar(howMuch = 0) {
      return this.input[this.idx + howMuch];
    }
    popChar() {
      const nextChar = this.peekChar(0);
      this.consumeChar(void 0);
      return nextChar;
    }
    consumeChar(char) {
      if (char !== void 0 && this.input[this.idx] !== char) {
        throw Error("Expected: '" + char + "' but found: '" + this.input[this.idx] + "' at offset: " + this.idx);
      }
      if (this.idx >= this.input.length) {
        throw Error("Unexpected end of input");
      }
      this.idx++;
    }
    loc(begin) {
      return { begin, end: this.idx };
    }
  }
  class BaseRegExpVisitor {
    visitChildren(node) {
      for (const key in node) {
        const child = node[key];
        if (node.hasOwnProperty(key)) {
          if (child.type !== void 0) {
            this.visit(child);
          } else if (Array.isArray(child)) {
            child.forEach((subChild) => {
              this.visit(subChild);
            }, this);
          }
        }
      }
    }
    visit(node) {
      switch (node.type) {
        case "Pattern":
          this.visitPattern(node);
          break;
        case "Flags":
          this.visitFlags(node);
          break;
        case "Disjunction":
          this.visitDisjunction(node);
          break;
        case "Alternative":
          this.visitAlternative(node);
          break;
        case "StartAnchor":
          this.visitStartAnchor(node);
          break;
        case "EndAnchor":
          this.visitEndAnchor(node);
          break;
        case "WordBoundary":
          this.visitWordBoundary(node);
          break;
        case "NonWordBoundary":
          this.visitNonWordBoundary(node);
          break;
        case "Lookahead":
          this.visitLookahead(node);
          break;
        case "NegativeLookahead":
          this.visitNegativeLookahead(node);
          break;
        case "Character":
          this.visitCharacter(node);
          break;
        case "Set":
          this.visitSet(node);
          break;
        case "Group":
          this.visitGroup(node);
          break;
        case "GroupBackReference":
          this.visitGroupBackReference(node);
          break;
        case "Quantifier":
          this.visitQuantifier(node);
          break;
      }
      this.visitChildren(node);
    }
    visitPattern(node) {
    }
    visitFlags(node) {
    }
    visitDisjunction(node) {
    }
    visitAlternative(node) {
    }
    // Assertion
    visitStartAnchor(node) {
    }
    visitEndAnchor(node) {
    }
    visitWordBoundary(node) {
    }
    visitNonWordBoundary(node) {
    }
    visitLookahead(node) {
    }
    visitNegativeLookahead(node) {
    }
    // atoms
    visitCharacter(node) {
    }
    visitSet(node) {
    }
    visitGroup(node) {
    }
    visitGroupBackReference(node) {
    }
    visitQuantifier(node) {
    }
  }
  let regExpAstCache = {};
  const regExpParser = new RegExpParser();
  function getRegExpAst(regExp) {
    const regExpStr = regExp.toString();
    if (regExpAstCache.hasOwnProperty(regExpStr)) {
      return regExpAstCache[regExpStr];
    } else {
      const regExpAst = regExpParser.pattern(regExpStr);
      regExpAstCache[regExpStr] = regExpAst;
      return regExpAst;
    }
  }
  function clearRegExpParserCache() {
    regExpAstCache = {};
  }
  const complementErrorMessage = "Complement Sets are not supported for first char optimization";
  const failedOptimizationPrefixMsg = 'Unable to use "first char" lexer optimizations:\n';
  function getOptimizedStartCodesIndices(regExp, ensureOptimizations = false) {
    try {
      const ast = getRegExpAst(regExp);
      const firstChars = firstCharOptimizedIndices(ast.value, {}, ast.flags.ignoreCase);
      return firstChars;
    } catch (e) {
      if (e.message === complementErrorMessage) {
        if (ensureOptimizations) {
          PRINT_WARNING(
            `${failedOptimizationPrefixMsg}	Unable to optimize: < ${regExp.toString()} >
	Complement Sets cannot be automatically optimized.
	This will disable the lexer's first char optimizations.
	See: https://chevrotain.io/docs/guide/resolving_lexer_errors.html#COMPLEMENT for details.`
          );
        }
      } else {
        let msgSuffix = "";
        if (ensureOptimizations) {
          msgSuffix = "\n	This will disable the lexer's first char optimizations.\n	See: https://chevrotain.io/docs/guide/resolving_lexer_errors.html#REGEXP_PARSING for details.";
        }
        PRINT_ERROR(
          `${failedOptimizationPrefixMsg}
	Failed parsing: < ${regExp.toString()} >
	Using the @chevrotain/regexp-to-ast library
	Please open an issue at: https://github.com/chevrotain/chevrotain/issues` + msgSuffix
        );
      }
    }
    return [];
  }
  function firstCharOptimizedIndices(ast, result, ignoreCase) {
    switch (ast.type) {
      case "Disjunction":
        for (let i = 0; i < ast.value.length; i++) {
          firstCharOptimizedIndices(ast.value[i], result, ignoreCase);
        }
        break;
      case "Alternative":
        const terms = ast.value;
        for (let i = 0; i < terms.length; i++) {
          const term = terms[i];
          switch (term.type) {
            case "EndAnchor":
            case "GroupBackReference":
            case "Lookahead":
            case "NegativeLookahead":
            case "StartAnchor":
            case "WordBoundary":
            case "NonWordBoundary":
              continue;
          }
          const atom = term;
          switch (atom.type) {
            case "Character":
              addOptimizedIdxToResult(atom.value, result, ignoreCase);
              break;
            case "Set":
              if (atom.complement === true) {
                throw Error(complementErrorMessage);
              }
              forEach(atom.value, (code) => {
                if (typeof code === "number") {
                  addOptimizedIdxToResult(code, result, ignoreCase);
                } else {
                  const range = code;
                  if (ignoreCase === true) {
                    for (let rangeCode = range.from; rangeCode <= range.to; rangeCode++) {
                      addOptimizedIdxToResult(rangeCode, result, ignoreCase);
                    }
                  } else {
                    for (let rangeCode = range.from; rangeCode <= range.to && rangeCode < minOptimizationVal; rangeCode++) {
                      addOptimizedIdxToResult(rangeCode, result, ignoreCase);
                    }
                    if (range.to >= minOptimizationVal) {
                      const minUnOptVal = range.from >= minOptimizationVal ? range.from : minOptimizationVal;
                      const maxUnOptVal = range.to;
                      const minOptIdx = charCodeToOptimizedIndex(minUnOptVal);
                      const maxOptIdx = charCodeToOptimizedIndex(maxUnOptVal);
                      for (let currOptIdx = minOptIdx; currOptIdx <= maxOptIdx; currOptIdx++) {
                        result[currOptIdx] = currOptIdx;
                      }
                    }
                  }
                }
              });
              break;
            case "Group":
              firstCharOptimizedIndices(atom.value, result, ignoreCase);
              break;
            default:
              throw Error("Non Exhaustive Match");
          }
          const isOptionalQuantifier = atom.quantifier !== void 0 && atom.quantifier.atLeast === 0;
          if (
            // A group may be optional due to empty contents /(?:)/
            // or if everything inside it is optional /((a)?)/
            atom.type === "Group" && isWholeOptional(atom) === false || // If this term is not a group it may only be optional if it has an optional quantifier
            atom.type !== "Group" && isOptionalQuantifier === false
          ) {
            break;
          }
        }
        break;
      default:
        throw Error("non exhaustive match!");
    }
    return values(result);
  }
  function addOptimizedIdxToResult(code, result, ignoreCase) {
    const optimizedCharIdx = charCodeToOptimizedIndex(code);
    result[optimizedCharIdx] = optimizedCharIdx;
    if (ignoreCase === true) {
      handleIgnoreCase(code, result);
    }
  }
  function handleIgnoreCase(code, result) {
    const char = String.fromCharCode(code);
    const upperChar = char.toUpperCase();
    if (upperChar !== char) {
      const optimizedCharIdx = charCodeToOptimizedIndex(upperChar.charCodeAt(0));
      result[optimizedCharIdx] = optimizedCharIdx;
    } else {
      const lowerChar = char.toLowerCase();
      if (lowerChar !== char) {
        const optimizedCharIdx = charCodeToOptimizedIndex(lowerChar.charCodeAt(0));
        result[optimizedCharIdx] = optimizedCharIdx;
      }
    }
  }
  function findCode(setNode, targetCharCodes) {
    return find$1(setNode.value, (codeOrRange) => {
      if (typeof codeOrRange === "number") {
        return includes(targetCharCodes, codeOrRange);
      } else {
        const range = codeOrRange;
        return find$1(targetCharCodes, (targetCode) => range.from <= targetCode && targetCode <= range.to) !== void 0;
      }
    });
  }
  function isWholeOptional(ast) {
    const quantifier = ast.quantifier;
    if (quantifier && quantifier.atLeast === 0) {
      return true;
    }
    if (!ast.value) {
      return false;
    }
    return isArray$1(ast.value) ? every(ast.value, isWholeOptional) : isWholeOptional(ast.value);
  }
  class CharCodeFinder extends BaseRegExpVisitor {
    constructor(targetCharCodes) {
      super();
      this.targetCharCodes = targetCharCodes;
      this.found = false;
    }
    visitChildren(node) {
      if (this.found === true) {
        return;
      }
      switch (node.type) {
        case "Lookahead":
          this.visitLookahead(node);
          return;
        case "NegativeLookahead":
          this.visitNegativeLookahead(node);
          return;
      }
      super.visitChildren(node);
    }
    visitCharacter(node) {
      if (includes(this.targetCharCodes, node.value)) {
        this.found = true;
      }
    }
    visitSet(node) {
      if (node.complement) {
        if (findCode(node, this.targetCharCodes) === void 0) {
          this.found = true;
        }
      } else {
        if (findCode(node, this.targetCharCodes) !== void 0) {
          this.found = true;
        }
      }
    }
  }
  function canMatchCharCode(charCodes, pattern) {
    if (pattern instanceof RegExp) {
      const ast = getRegExpAst(pattern);
      const charCodeFinder = new CharCodeFinder(charCodes);
      charCodeFinder.visit(ast);
      return charCodeFinder.found;
    } else {
      return find$1(pattern, (char) => {
        return includes(charCodes, char.charCodeAt(0));
      }) !== void 0;
    }
  }
  const PATTERN = "PATTERN";
  const DEFAULT_MODE = "defaultMode";
  const MODES = "modes";
  let SUPPORT_STICKY = typeof new RegExp("(?:)").sticky === "boolean";
  function analyzeTokenTypes(tokenTypes, options) {
    options = defaults$1(options, {
      useSticky: SUPPORT_STICKY,
      debug: false,
      safeMode: false,
      positionTracking: "full",
      lineTerminatorCharacters: ["\r", "\n"],
      tracer: (msg, action) => action()
    });
    const tracer = options.tracer;
    tracer("initCharCodeToOptimizedIndexMap", () => {
      initCharCodeToOptimizedIndexMap();
    });
    let onlyRelevantTypes;
    tracer("Reject Lexer.NA", () => {
      onlyRelevantTypes = reject(tokenTypes, (currType) => {
        return currType[PATTERN] === Lexer2.NA;
      });
    });
    let hasCustom = false;
    let allTransformedPatterns;
    tracer("Transform Patterns", () => {
      hasCustom = false;
      allTransformedPatterns = map(onlyRelevantTypes, (currType) => {
        const currPattern = currType[PATTERN];
        if (isRegExp$1(currPattern)) {
          const regExpSource = currPattern.source;
          if (regExpSource.length === 1 && // only these regExp meta characters which can appear in a length one regExp
          regExpSource !== "^" && regExpSource !== "$" && regExpSource !== "." && !currPattern.ignoreCase) {
            return regExpSource;
          } else if (regExpSource.length === 2 && regExpSource[0] === "\\" && // not a meta character
          !includes(["d", "D", "s", "S", "t", "r", "n", "t", "0", "c", "b", "B", "f", "v", "w", "W"], regExpSource[1])) {
            return regExpSource[1];
          } else {
            return options.useSticky ? addStickyFlag(currPattern) : addStartOfInput(currPattern);
          }
        } else if (isFunction(currPattern)) {
          hasCustom = true;
          return { exec: currPattern };
        } else if (typeof currPattern === "object") {
          hasCustom = true;
          return currPattern;
        } else if (typeof currPattern === "string") {
          if (currPattern.length === 1) {
            return currPattern;
          } else {
            const escapedRegExpString = currPattern.replace(/[\\^$.*+?()[\]{}|]/g, "\\$&");
            const wrappedRegExp = new RegExp(escapedRegExpString);
            return options.useSticky ? addStickyFlag(wrappedRegExp) : addStartOfInput(wrappedRegExp);
          }
        } else {
          throw Error("non exhaustive match");
        }
      });
    });
    let patternIdxToType;
    let patternIdxToGroup;
    let patternIdxToLongerAltIdxArr;
    let patternIdxToPushMode;
    let patternIdxToPopMode;
    tracer("misc mapping", () => {
      patternIdxToType = map(onlyRelevantTypes, (currType) => currType.tokenTypeIdx);
      patternIdxToGroup = map(onlyRelevantTypes, (clazz) => {
        const groupName = clazz.GROUP;
        if (groupName === Lexer2.SKIPPED) {
          return void 0;
        } else if (isString(groupName)) {
          return groupName;
        } else if (isUndefined(groupName)) {
          return false;
        } else {
          throw Error("non exhaustive match");
        }
      });
      patternIdxToLongerAltIdxArr = map(onlyRelevantTypes, (clazz) => {
        const longerAltType = clazz.LONGER_ALT;
        if (longerAltType) {
          const longerAltIdxArr = isArray$1(longerAltType) ? map(longerAltType, (type) => indexOf(onlyRelevantTypes, type)) : [indexOf(onlyRelevantTypes, longerAltType)];
          return longerAltIdxArr;
        }
      });
      patternIdxToPushMode = map(onlyRelevantTypes, (clazz) => clazz.PUSH_MODE);
      patternIdxToPopMode = map(onlyRelevantTypes, (clazz) => has(clazz, "POP_MODE"));
    });
    let patternIdxToCanLineTerminator;
    tracer("Line Terminator Handling", () => {
      const lineTerminatorCharCodes = getCharCodes(options.lineTerminatorCharacters);
      patternIdxToCanLineTerminator = map(onlyRelevantTypes, (tokType) => false);
      if (options.positionTracking !== "onlyOffset") {
        patternIdxToCanLineTerminator = map(onlyRelevantTypes, (tokType) => {
          if (has(tokType, "LINE_BREAKS")) {
            return !!tokType.LINE_BREAKS;
          } else {
            return checkLineBreaksIssues(tokType, lineTerminatorCharCodes) === false && canMatchCharCode(lineTerminatorCharCodes, tokType.PATTERN);
          }
        });
      }
    });
    let patternIdxToIsCustom;
    let patternIdxToShort;
    let emptyGroups;
    let patternIdxToConfig;
    tracer("Misc Mapping #2", () => {
      patternIdxToIsCustom = map(onlyRelevantTypes, isCustomPattern);
      patternIdxToShort = map(allTransformedPatterns, isShortPattern);
      emptyGroups = reduce(
        onlyRelevantTypes,
        (acc, clazz) => {
          const groupName = clazz.GROUP;
          if (isString(groupName) && !(groupName === Lexer2.SKIPPED)) {
            acc[groupName] = [];
          }
          return acc;
        },
        {}
      );
      patternIdxToConfig = map(allTransformedPatterns, (x, idx) => {
        return {
          pattern: allTransformedPatterns[idx],
          longerAlt: patternIdxToLongerAltIdxArr[idx],
          canLineTerminator: patternIdxToCanLineTerminator[idx],
          isCustom: patternIdxToIsCustom[idx],
          short: patternIdxToShort[idx],
          group: patternIdxToGroup[idx],
          push: patternIdxToPushMode[idx],
          pop: patternIdxToPopMode[idx],
          tokenTypeIdx: patternIdxToType[idx],
          tokenType: onlyRelevantTypes[idx]
        };
      });
    });
    let canBeOptimized = true;
    let charCodeToPatternIdxToConfig = [];
    if (!options.safeMode) {
      tracer("First Char Optimization", () => {
        charCodeToPatternIdxToConfig = reduce(
          onlyRelevantTypes,
          (result, currTokType, idx) => {
            if (typeof currTokType.PATTERN === "string") {
              const charCode = currTokType.PATTERN.charCodeAt(0);
              const optimizedIdx = charCodeToOptimizedIndex(charCode);
              addToMapOfArrays(result, optimizedIdx, patternIdxToConfig[idx]);
            } else if (isArray$1(currTokType.START_CHARS_HINT)) {
              let lastOptimizedIdx;
              forEach(currTokType.START_CHARS_HINT, (charOrInt) => {
                const charCode = typeof charOrInt === "string" ? charOrInt.charCodeAt(0) : charOrInt;
                const currOptimizedIdx = charCodeToOptimizedIndex(charCode);
                if (lastOptimizedIdx !== currOptimizedIdx) {
                  lastOptimizedIdx = currOptimizedIdx;
                  addToMapOfArrays(result, currOptimizedIdx, patternIdxToConfig[idx]);
                }
              });
            } else if (isRegExp$1(currTokType.PATTERN)) {
              if (currTokType.PATTERN.unicode) {
                canBeOptimized = false;
                if (options.ensureOptimizations) {
                  PRINT_ERROR(
                    `${failedOptimizationPrefixMsg}	Unable to analyze < ${currTokType.PATTERN.toString()} > pattern.
	The regexp unicode flag is not currently supported by the regexp-to-ast library.
	This will disable the lexer's first char optimizations.
	For details See: https://chevrotain.io/docs/guide/resolving_lexer_errors.html#UNICODE_OPTIMIZE`
                  );
                }
              } else {
                const optimizedCodes = getOptimizedStartCodesIndices(currTokType.PATTERN, options.ensureOptimizations);
                if (isEmpty(optimizedCodes)) {
                  canBeOptimized = false;
                }
                forEach(optimizedCodes, (code) => {
                  addToMapOfArrays(result, code, patternIdxToConfig[idx]);
                });
              }
            } else {
              if (options.ensureOptimizations) {
                PRINT_ERROR(
                  `${failedOptimizationPrefixMsg}	TokenType: <${currTokType.name}> is using a custom token pattern without providing <start_chars_hint> parameter.
	This will disable the lexer's first char optimizations.
	For details See: https://chevrotain.io/docs/guide/resolving_lexer_errors.html#CUSTOM_OPTIMIZE`
                );
              }
              canBeOptimized = false;
            }
            return result;
          },
          []
        );
      });
    }
    return {
      emptyGroups,
      patternIdxToConfig,
      charCodeToPatternIdxToConfig,
      hasCustom,
      canBeOptimized
    };
  }
  function validatePatterns(tokenTypes, validModesNames) {
    let errors = [];
    const missingResult = findMissingPatterns(tokenTypes);
    errors = errors.concat(missingResult.errors);
    const invalidResult = findInvalidPatterns(missingResult.valid);
    const validTokenTypes = invalidResult.valid;
    errors = errors.concat(invalidResult.errors);
    errors = errors.concat(validateRegExpPattern(validTokenTypes));
    errors = errors.concat(findInvalidGroupType(validTokenTypes));
    errors = errors.concat(findModesThatDoNotExist(validTokenTypes, validModesNames));
    errors = errors.concat(findUnreachablePatterns(validTokenTypes));
    return errors;
  }
  function validateRegExpPattern(tokenTypes) {
    let errors = [];
    const withRegExpPatterns = filter(tokenTypes, (currTokType) => isRegExp$1(currTokType[PATTERN]));
    errors = errors.concat(findEndOfInputAnchor(withRegExpPatterns));
    errors = errors.concat(findStartOfInputAnchor(withRegExpPatterns));
    errors = errors.concat(findUnsupportedFlags(withRegExpPatterns));
    errors = errors.concat(findDuplicatePatterns(withRegExpPatterns));
    errors = errors.concat(findEmptyMatchRegExps(withRegExpPatterns));
    return errors;
  }
  function findMissingPatterns(tokenTypes) {
    const tokenTypesWithMissingPattern = filter(tokenTypes, (currType) => {
      return !has(currType, PATTERN);
    });
    const errors = map(tokenTypesWithMissingPattern, (currType) => {
      return {
        message: "Token Type: ->" + currType.name + "<- missing static 'PATTERN' property",
        type: LexerDefinitionErrorType.MISSING_PATTERN,
        tokenTypes: [currType]
      };
    });
    const valid = difference$1(tokenTypes, tokenTypesWithMissingPattern);
    return { errors, valid };
  }
  function findInvalidPatterns(tokenTypes) {
    const tokenTypesWithInvalidPattern = filter(tokenTypes, (currType) => {
      const pattern = currType[PATTERN];
      return !isRegExp$1(pattern) && !isFunction(pattern) && !has(pattern, "exec") && !isString(pattern);
    });
    const errors = map(tokenTypesWithInvalidPattern, (currType) => {
      return {
        message: "Token Type: ->" + currType.name + "<- static 'PATTERN' can only be a RegExp, a Function matching the {CustomPatternMatcherFunc} type or an Object matching the {ICustomPattern} interface.",
        type: LexerDefinitionErrorType.INVALID_PATTERN,
        tokenTypes: [currType]
      };
    });
    const valid = difference$1(tokenTypes, tokenTypesWithInvalidPattern);
    return { errors, valid };
  }
  const end_of_input = /[^\\][$]/;
  function findEndOfInputAnchor(tokenTypes) {
    class EndAnchorFinder extends BaseRegExpVisitor {
      constructor() {
        super(...arguments);
        this.found = false;
      }
      visitEndAnchor(node) {
        this.found = true;
      }
    }
    const invalidRegex = filter(tokenTypes, (currType) => {
      const pattern = currType.PATTERN;
      try {
        const regexpAst = getRegExpAst(pattern);
        const endAnchorVisitor = new EndAnchorFinder();
        endAnchorVisitor.visit(regexpAst);
        return endAnchorVisitor.found;
      } catch (e) {
        return end_of_input.test(pattern.source);
      }
    });
    const errors = map(invalidRegex, (currType) => {
      return {
        message: "Unexpected RegExp Anchor Error:\n	Token Type: ->" + currType.name + "<- static 'PATTERN' cannot contain end of input anchor '$'\n	See chevrotain.io/docs/guide/resolving_lexer_errors.html#ANCHORS	for details.",
        type: LexerDefinitionErrorType.EOI_ANCHOR_FOUND,
        tokenTypes: [currType]
      };
    });
    return errors;
  }
  function findEmptyMatchRegExps(tokenTypes) {
    const matchesEmptyString = filter(tokenTypes, (currType) => {
      const pattern = currType.PATTERN;
      return pattern.test("");
    });
    const errors = map(matchesEmptyString, (currType) => {
      return {
        message: "Token Type: ->" + currType.name + "<- static 'PATTERN' must not match an empty string",
        type: LexerDefinitionErrorType.EMPTY_MATCH_PATTERN,
        tokenTypes: [currType]
      };
    });
    return errors;
  }
  const start_of_input = /[^\\[][\^]|^\^/;
  function findStartOfInputAnchor(tokenTypes) {
    class StartAnchorFinder extends BaseRegExpVisitor {
      constructor() {
        super(...arguments);
        this.found = false;
      }
      visitStartAnchor(node) {
        this.found = true;
      }
    }
    const invalidRegex = filter(tokenTypes, (currType) => {
      const pattern = currType.PATTERN;
      try {
        const regexpAst = getRegExpAst(pattern);
        const startAnchorVisitor = new StartAnchorFinder();
        startAnchorVisitor.visit(regexpAst);
        return startAnchorVisitor.found;
      } catch (e) {
        return start_of_input.test(pattern.source);
      }
    });
    const errors = map(invalidRegex, (currType) => {
      return {
        message: "Unexpected RegExp Anchor Error:\n	Token Type: ->" + currType.name + "<- static 'PATTERN' cannot contain start of input anchor '^'\n	See https://chevrotain.io/docs/guide/resolving_lexer_errors.html#ANCHORS	for details.",
        type: LexerDefinitionErrorType.SOI_ANCHOR_FOUND,
        tokenTypes: [currType]
      };
    });
    return errors;
  }
  function findUnsupportedFlags(tokenTypes) {
    const invalidFlags = filter(tokenTypes, (currType) => {
      const pattern = currType[PATTERN];
      return pattern instanceof RegExp && (pattern.multiline || pattern.global);
    });
    const errors = map(invalidFlags, (currType) => {
      return {
        message: "Token Type: ->" + currType.name + "<- static 'PATTERN' may NOT contain global('g') or multiline('m')",
        type: LexerDefinitionErrorType.UNSUPPORTED_FLAGS_FOUND,
        tokenTypes: [currType]
      };
    });
    return errors;
  }
  function findDuplicatePatterns(tokenTypes) {
    const found = [];
    let identicalPatterns = map(tokenTypes, (outerType) => {
      return reduce(
        tokenTypes,
        (result, innerType) => {
          if (outerType.PATTERN.source === innerType.PATTERN.source && !includes(found, innerType) && innerType.PATTERN !== Lexer2.NA) {
            found.push(innerType);
            result.push(innerType);
            return result;
          }
          return result;
        },
        []
      );
    });
    identicalPatterns = compact(identicalPatterns);
    const duplicatePatterns = filter(identicalPatterns, (currIdenticalSet) => {
      return currIdenticalSet.length > 1;
    });
    const errors = map(duplicatePatterns, (setOfIdentical) => {
      const tokenTypeNames = map(setOfIdentical, (currType) => {
        return currType.name;
      });
      const dupPatternSrc = head(setOfIdentical).PATTERN;
      return {
        message: `The same RegExp pattern ->${dupPatternSrc}<-has been used in all of the following Token Types: ${tokenTypeNames.join(", ")} <-`,
        type: LexerDefinitionErrorType.DUPLICATE_PATTERNS_FOUND,
        tokenTypes: setOfIdentical
      };
    });
    return errors;
  }
  function findInvalidGroupType(tokenTypes) {
    const invalidTypes = filter(tokenTypes, (clazz) => {
      if (!has(clazz, "GROUP")) {
        return false;
      }
      const group = clazz.GROUP;
      return group !== Lexer2.SKIPPED && group !== Lexer2.NA && !isString(group);
    });
    const errors = map(invalidTypes, (currType) => {
      return {
        message: "Token Type: ->" + currType.name + "<- static 'GROUP' can only be Lexer.SKIPPED/Lexer.NA/A String",
        type: LexerDefinitionErrorType.INVALID_GROUP_TYPE_FOUND,
        tokenTypes: [currType]
      };
    });
    return errors;
  }
  function findModesThatDoNotExist(tokenTypes, validModes) {
    const invalidModes = filter(tokenTypes, (clazz) => {
      return clazz.PUSH_MODE !== void 0 && !includes(validModes, clazz.PUSH_MODE);
    });
    const errors = map(invalidModes, (tokType) => {
      const msg = `Token Type: ->${tokType.name}<- static 'PUSH_MODE' value cannot refer to a Lexer Mode ->${tokType.PUSH_MODE}<-which does not exist`;
      return {
        message: msg,
        type: LexerDefinitionErrorType.PUSH_MODE_DOES_NOT_EXIST,
        tokenTypes: [tokType]
      };
    });
    return errors;
  }
  function findUnreachablePatterns(tokenTypes) {
    const errors = [];
    const canBeTested = reduce(
      tokenTypes,
      (result, tokType, idx) => {
        const pattern = tokType.PATTERN;
        if (pattern === Lexer2.NA) {
          return result;
        }
        if (isString(pattern)) {
          result.push({ str: pattern, idx, tokenType: tokType });
        } else if (isRegExp$1(pattern) && noMetaChar(pattern)) {
          result.push({ str: pattern.source, idx, tokenType: tokType });
        }
        return result;
      },
      []
    );
    forEach(tokenTypes, (tokType, testIdx) => {
      forEach(canBeTested, ({ str, idx, tokenType }) => {
        if (testIdx < idx && testTokenType(str, tokType.PATTERN)) {
          const msg = `Token: ->${tokenType.name}<- can never be matched.
Because it appears AFTER the Token Type ->${tokType.name}<-in the lexer's definition.
See https://chevrotain.io/docs/guide/resolving_lexer_errors.html#UNREACHABLE`;
          errors.push({
            message: msg,
            type: LexerDefinitionErrorType.UNREACHABLE_PATTERN,
            tokenTypes: [tokType, tokenType]
          });
        }
      });
    });
    return errors;
  }
  function testTokenType(str, pattern) {
    if (isRegExp$1(pattern)) {
      const regExpArray = pattern.exec(str);
      return regExpArray !== null && regExpArray.index === 0;
    } else if (isFunction(pattern)) {
      return pattern(str, 0, [], {});
    } else if (has(pattern, "exec")) {
      return pattern.exec(str, 0, [], {});
    } else if (typeof pattern === "string") {
      return pattern === str;
    } else {
      throw Error("non exhaustive match");
    }
  }
  function noMetaChar(regExp) {
    const metaChars = [".", "\\", "[", "]", "|", "^", "$", "(", ")", "?", "*", "+", "{"];
    return find$1(metaChars, (char) => regExp.source.indexOf(char) !== -1) === void 0;
  }
  function addStartOfInput(pattern) {
    const flags = pattern.ignoreCase ? "i" : "";
    return new RegExp(`^(?:${pattern.source})`, flags);
  }
  function addStickyFlag(pattern) {
    const flags = pattern.ignoreCase ? "iy" : "y";
    return new RegExp(`${pattern.source}`, flags);
  }
  function performRuntimeChecks(lexerDefinition, trackLines, lineTerminatorCharacters) {
    const errors = [];
    if (!has(lexerDefinition, DEFAULT_MODE)) {
      errors.push({
        message: "A MultiMode Lexer cannot be initialized without a <" + DEFAULT_MODE + "> property in its definition\n",
        type: LexerDefinitionErrorType.MULTI_MODE_LEXER_WITHOUT_DEFAULT_MODE
      });
    }
    if (!has(lexerDefinition, MODES)) {
      errors.push({
        message: "A MultiMode Lexer cannot be initialized without a <" + MODES + "> property in its definition\n",
        type: LexerDefinitionErrorType.MULTI_MODE_LEXER_WITHOUT_MODES_PROPERTY
      });
    }
    if (has(lexerDefinition, MODES) && has(lexerDefinition, DEFAULT_MODE) && !has(lexerDefinition.modes, lexerDefinition.defaultMode)) {
      errors.push({
        message: `A MultiMode Lexer cannot be initialized with a ${DEFAULT_MODE}: <${lexerDefinition.defaultMode}>which does not exist
`,
        type: LexerDefinitionErrorType.MULTI_MODE_LEXER_DEFAULT_MODE_VALUE_DOES_NOT_EXIST
      });
    }
    if (has(lexerDefinition, MODES)) {
      forEach(lexerDefinition.modes, (currModeValue, currModeName) => {
        forEach(currModeValue, (currTokType, currIdx) => {
          if (isUndefined(currTokType)) {
            errors.push({
              message: `A Lexer cannot be initialized using an undefined Token Type. Mode:<${currModeName}> at index: <${currIdx}>
`,
              type: LexerDefinitionErrorType.LEXER_DEFINITION_CANNOT_CONTAIN_UNDEFINED
            });
          } else if (has(currTokType, "LONGER_ALT")) {
            const longerAlt = isArray$1(currTokType.LONGER_ALT) ? currTokType.LONGER_ALT : [currTokType.LONGER_ALT];
            forEach(longerAlt, (currLongerAlt) => {
              if (!isUndefined(currLongerAlt) && !includes(currModeValue, currLongerAlt)) {
                errors.push({
                  message: `A MultiMode Lexer cannot be initialized with a longer_alt <${currLongerAlt.name}> on token <${currTokType.name}> outside of mode <${currModeName}>
`,
                  type: LexerDefinitionErrorType.MULTI_MODE_LEXER_LONGER_ALT_NOT_IN_CURRENT_MODE
                });
              }
            });
          }
        });
      });
    }
    return errors;
  }
  function performWarningRuntimeChecks(lexerDefinition, trackLines, lineTerminatorCharacters) {
    const warnings = [];
    let hasAnyLineBreak = false;
    const allTokenTypes = compact(flatten(values(lexerDefinition.modes)));
    const concreteTokenTypes = reject(allTokenTypes, (currType) => currType[PATTERN] === Lexer2.NA);
    const terminatorCharCodes = getCharCodes(lineTerminatorCharacters);
    if (trackLines) {
      forEach(concreteTokenTypes, (tokType) => {
        const currIssue = checkLineBreaksIssues(tokType, terminatorCharCodes);
        if (currIssue !== false) {
          const message = buildLineBreakIssueMessage(tokType, currIssue);
          const warningDescriptor = {
            message,
            type: currIssue.issue,
            tokenType: tokType
          };
          warnings.push(warningDescriptor);
        } else {
          if (has(tokType, "LINE_BREAKS")) {
            if (tokType.LINE_BREAKS === true) {
              hasAnyLineBreak = true;
            }
          } else {
            if (canMatchCharCode(terminatorCharCodes, tokType.PATTERN)) {
              hasAnyLineBreak = true;
            }
          }
        }
      });
    }
    if (trackLines && !hasAnyLineBreak) {
      warnings.push({
        message: "Warning: No LINE_BREAKS Found.\n	This Lexer has been defined to track line and column information,\n	But none of the Token Types can be identified as matching a line terminator.\n	See https://chevrotain.io/docs/guide/resolving_lexer_errors.html#LINE_BREAKS \n	for details.",
        type: LexerDefinitionErrorType.NO_LINE_BREAKS_FLAGS
      });
    }
    return warnings;
  }
  function cloneEmptyGroups(emptyGroups) {
    const clonedResult = {};
    const groupKeys = keys(emptyGroups);
    forEach(groupKeys, (currKey) => {
      const currGroupValue = emptyGroups[currKey];
      if (isArray$1(currGroupValue)) {
        clonedResult[currKey] = [];
      } else {
        throw Error("non exhaustive match");
      }
    });
    return clonedResult;
  }
  function isCustomPattern(tokenType) {
    const pattern = tokenType.PATTERN;
    if (isRegExp$1(pattern)) {
      return false;
    } else if (isFunction(pattern)) {
      return true;
    } else if (has(pattern, "exec")) {
      return true;
    } else if (isString(pattern)) {
      return false;
    } else {
      throw Error("non exhaustive match");
    }
  }
  function isShortPattern(pattern) {
    if (isString(pattern) && pattern.length === 1) {
      return pattern.charCodeAt(0);
    } else {
      return false;
    }
  }
  const LineTerminatorOptimizedTester = {
    // implements /\n|\r\n?/g.test
    test: function(text) {
      const len = text.length;
      for (let i = this.lastIndex; i < len; i++) {
        const c = text.charCodeAt(i);
        if (c === 10) {
          this.lastIndex = i + 1;
          return true;
        } else if (c === 13) {
          if (text.charCodeAt(i + 1) === 10) {
            this.lastIndex = i + 2;
          } else {
            this.lastIndex = i + 1;
          }
          return true;
        }
      }
      return false;
    },
    lastIndex: 0
  };
  function checkLineBreaksIssues(tokType, lineTerminatorCharCodes) {
    if (has(tokType, "LINE_BREAKS")) {
      return false;
    } else {
      if (isRegExp$1(tokType.PATTERN)) {
        try {
          canMatchCharCode(lineTerminatorCharCodes, tokType.PATTERN);
        } catch (e) {
          return {
            issue: LexerDefinitionErrorType.IDENTIFY_TERMINATOR,
            errMsg: e.message
          };
        }
        return false;
      } else if (isString(tokType.PATTERN)) {
        return false;
      } else if (isCustomPattern(tokType)) {
        return { issue: LexerDefinitionErrorType.CUSTOM_LINE_BREAK };
      } else {
        throw Error("non exhaustive match");
      }
    }
  }
  function buildLineBreakIssueMessage(tokType, details) {
    if (details.issue === LexerDefinitionErrorType.IDENTIFY_TERMINATOR) {
      return `Warning: unable to identify line terminator usage in pattern.
	The problem is in the <${tokType.name}> Token Type
	 Root cause: ${details.errMsg}.
	For details See: https://chevrotain.io/docs/guide/resolving_lexer_errors.html#IDENTIFY_TERMINATOR`;
    } else if (details.issue === LexerDefinitionErrorType.CUSTOM_LINE_BREAK) {
      return `Warning: A Custom Token Pattern should specify the <line_breaks> option.
	The problem is in the <${tokType.name}> Token Type
	For details See: https://chevrotain.io/docs/guide/resolving_lexer_errors.html#CUSTOM_LINE_BREAK`;
    } else {
      throw Error("non exhaustive match");
    }
  }
  function getCharCodes(charsOrCodes) {
    const charCodes = map(charsOrCodes, (numOrString) => {
      if (isString(numOrString)) {
        return numOrString.charCodeAt(0);
      } else {
        return numOrString;
      }
    });
    return charCodes;
  }
  function addToMapOfArrays(map2, key, value) {
    if (map2[key] === void 0) {
      map2[key] = [value];
    } else {
      map2[key].push(value);
    }
  }
  const minOptimizationVal = 256;
  let charCodeToOptimizedIdxMap = [];
  function charCodeToOptimizedIndex(charCode) {
    return charCode < minOptimizationVal ? charCode : charCodeToOptimizedIdxMap[charCode];
  }
  function initCharCodeToOptimizedIndexMap() {
    if (isEmpty(charCodeToOptimizedIdxMap)) {
      charCodeToOptimizedIdxMap = new Array(65536);
      for (let i = 0; i < 65536; i++) {
        charCodeToOptimizedIdxMap[i] = i > 255 ? 255 + ~~(i / 255) : i;
      }
    }
  }
  function tokenStructuredMatcher(tokInstance, tokConstructor) {
    const instanceType = tokInstance.tokenTypeIdx;
    if (instanceType === tokConstructor.tokenTypeIdx) {
      return true;
    } else {
      return tokConstructor.isParent === true && tokConstructor.categoryMatchesMap[instanceType] === true;
    }
  }
  function tokenStructuredMatcherNoCategories(token, tokType) {
    return token.tokenTypeIdx === tokType.tokenTypeIdx;
  }
  let tokenShortNameIdx = 1;
  const tokenIdxToClass = {};
  function augmentTokenTypes(tokenTypes) {
    const tokenTypesAndParents = expandCategories(tokenTypes);
    assignTokenDefaultProps(tokenTypesAndParents);
    assignCategoriesMapProp(tokenTypesAndParents);
    assignCategoriesTokensProp(tokenTypesAndParents);
    forEach(tokenTypesAndParents, (tokType) => {
      tokType.isParent = tokType.categoryMatches.length > 0;
    });
  }
  function expandCategories(tokenTypes) {
    let result = clone(tokenTypes);
    let categories = tokenTypes;
    let searching = true;
    while (searching) {
      categories = compact(flatten(map(categories, (currTokType) => currTokType.CATEGORIES)));
      const newCategories = difference$1(categories, result);
      result = result.concat(newCategories);
      if (isEmpty(newCategories)) {
        searching = false;
      } else {
        categories = newCategories;
      }
    }
    return result;
  }
  function assignTokenDefaultProps(tokenTypes) {
    forEach(tokenTypes, (currTokType) => {
      if (!hasShortKeyProperty(currTokType)) {
        tokenIdxToClass[tokenShortNameIdx] = currTokType;
        currTokType.tokenTypeIdx = tokenShortNameIdx++;
      }
      if (hasCategoriesProperty(currTokType) && !isArray$1(currTokType.CATEGORIES)) {
        currTokType.CATEGORIES = [currTokType.CATEGORIES];
      }
      if (!hasCategoriesProperty(currTokType)) {
        currTokType.CATEGORIES = [];
      }
      if (!hasExtendingTokensTypesProperty(currTokType)) {
        currTokType.categoryMatches = [];
      }
      if (!hasExtendingTokensTypesMapProperty(currTokType)) {
        currTokType.categoryMatchesMap = {};
      }
    });
  }
  function assignCategoriesTokensProp(tokenTypes) {
    forEach(tokenTypes, (currTokType) => {
      currTokType.categoryMatches = [];
      forEach(currTokType.categoryMatchesMap, (val, key) => {
        currTokType.categoryMatches.push(tokenIdxToClass[key].tokenTypeIdx);
      });
    });
  }
  function assignCategoriesMapProp(tokenTypes) {
    forEach(tokenTypes, (currTokType) => {
      singleAssignCategoriesToksMap([], currTokType);
    });
  }
  function singleAssignCategoriesToksMap(path, nextNode) {
    forEach(path, (pathNode) => {
      nextNode.categoryMatchesMap[pathNode.tokenTypeIdx] = true;
    });
    forEach(nextNode.CATEGORIES, (nextCategory) => {
      const newPath = path.concat(nextNode);
      if (!includes(newPath, nextCategory)) {
        singleAssignCategoriesToksMap(newPath, nextCategory);
      }
    });
  }
  function hasShortKeyProperty(tokType) {
    return has(tokType, "tokenTypeIdx");
  }
  function hasCategoriesProperty(tokType) {
    return has(tokType, "CATEGORIES");
  }
  function hasExtendingTokensTypesProperty(tokType) {
    return has(tokType, "categoryMatches");
  }
  function hasExtendingTokensTypesMapProperty(tokType) {
    return has(tokType, "categoryMatchesMap");
  }
  function isTokenType(tokType) {
    return has(tokType, "tokenTypeIdx");
  }
  const defaultLexerErrorProvider = {
    buildUnableToPopLexerModeMessage(token) {
      return `Unable to pop Lexer Mode after encountering Token ->${token.image}<- The Mode Stack is empty`;
    },
    buildUnexpectedCharactersMessage(fullText, startOffset, length, line, column) {
      return `unexpected character: ->${fullText.charAt(startOffset)}<- at offset: ${startOffset}, skipped ${length} characters.`;
    }
  };
  var LexerDefinitionErrorType;
  (function(LexerDefinitionErrorType2) {
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["MISSING_PATTERN"] = 0] = "MISSING_PATTERN";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["INVALID_PATTERN"] = 1] = "INVALID_PATTERN";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["EOI_ANCHOR_FOUND"] = 2] = "EOI_ANCHOR_FOUND";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["UNSUPPORTED_FLAGS_FOUND"] = 3] = "UNSUPPORTED_FLAGS_FOUND";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["DUPLICATE_PATTERNS_FOUND"] = 4] = "DUPLICATE_PATTERNS_FOUND";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["INVALID_GROUP_TYPE_FOUND"] = 5] = "INVALID_GROUP_TYPE_FOUND";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["PUSH_MODE_DOES_NOT_EXIST"] = 6] = "PUSH_MODE_DOES_NOT_EXIST";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["MULTI_MODE_LEXER_WITHOUT_DEFAULT_MODE"] = 7] = "MULTI_MODE_LEXER_WITHOUT_DEFAULT_MODE";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["MULTI_MODE_LEXER_WITHOUT_MODES_PROPERTY"] = 8] = "MULTI_MODE_LEXER_WITHOUT_MODES_PROPERTY";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["MULTI_MODE_LEXER_DEFAULT_MODE_VALUE_DOES_NOT_EXIST"] = 9] = "MULTI_MODE_LEXER_DEFAULT_MODE_VALUE_DOES_NOT_EXIST";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["LEXER_DEFINITION_CANNOT_CONTAIN_UNDEFINED"] = 10] = "LEXER_DEFINITION_CANNOT_CONTAIN_UNDEFINED";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["SOI_ANCHOR_FOUND"] = 11] = "SOI_ANCHOR_FOUND";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["EMPTY_MATCH_PATTERN"] = 12] = "EMPTY_MATCH_PATTERN";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["NO_LINE_BREAKS_FLAGS"] = 13] = "NO_LINE_BREAKS_FLAGS";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["UNREACHABLE_PATTERN"] = 14] = "UNREACHABLE_PATTERN";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["IDENTIFY_TERMINATOR"] = 15] = "IDENTIFY_TERMINATOR";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["CUSTOM_LINE_BREAK"] = 16] = "CUSTOM_LINE_BREAK";
    LexerDefinitionErrorType2[LexerDefinitionErrorType2["MULTI_MODE_LEXER_LONGER_ALT_NOT_IN_CURRENT_MODE"] = 17] = "MULTI_MODE_LEXER_LONGER_ALT_NOT_IN_CURRENT_MODE";
  })(LexerDefinitionErrorType || (LexerDefinitionErrorType = {}));
  const DEFAULT_LEXER_CONFIG = {
    deferDefinitionErrorsHandling: false,
    positionTracking: "full",
    lineTerminatorsPattern: /\n|\r\n?/g,
    lineTerminatorCharacters: ["\n", "\r"],
    ensureOptimizations: false,
    safeMode: false,
    errorMessageProvider: defaultLexerErrorProvider,
    traceInitPerf: false,
    skipValidations: false,
    recoveryEnabled: true
  };
  Object.freeze(DEFAULT_LEXER_CONFIG);
  class Lexer2 {
    constructor(lexerDefinition, config = DEFAULT_LEXER_CONFIG) {
      this.lexerDefinition = lexerDefinition;
      this.lexerDefinitionErrors = [];
      this.lexerDefinitionWarning = [];
      this.patternIdxToConfig = {};
      this.charCodeToPatternIdxToConfig = {};
      this.modes = [];
      this.emptyGroups = {};
      this.trackStartLines = true;
      this.trackEndLines = true;
      this.hasCustom = false;
      this.canModeBeOptimized = {};
      this.TRACE_INIT = (phaseDesc, phaseImpl) => {
        if (this.traceInitPerf === true) {
          this.traceInitIndent++;
          const indent = new Array(this.traceInitIndent + 1).join("	");
          if (this.traceInitIndent < this.traceInitMaxIdent) {
            console.log(`${indent}--> <${phaseDesc}>`);
          }
          const { time, value } = timer(phaseImpl);
          const traceMethod = time > 10 ? console.warn : console.log;
          if (this.traceInitIndent < this.traceInitMaxIdent) {
            traceMethod(`${indent}<-- <${phaseDesc}> time: ${time}ms`);
          }
          this.traceInitIndent--;
          return value;
        } else {
          return phaseImpl();
        }
      };
      if (typeof config === "boolean") {
        throw Error(
          "The second argument to the Lexer constructor is now an ILexerConfig Object.\na boolean 2nd argument is no longer supported"
        );
      }
      this.config = assign$1({}, DEFAULT_LEXER_CONFIG, config);
      const traceInitVal = this.config.traceInitPerf;
      if (traceInitVal === true) {
        this.traceInitMaxIdent = Infinity;
        this.traceInitPerf = true;
      } else if (typeof traceInitVal === "number") {
        this.traceInitMaxIdent = traceInitVal;
        this.traceInitPerf = true;
      }
      this.traceInitIndent = -1;
      this.TRACE_INIT("Lexer Constructor", () => {
        let actualDefinition;
        let hasOnlySingleMode = true;
        this.TRACE_INIT("Lexer Config handling", () => {
          if (this.config.lineTerminatorsPattern === DEFAULT_LEXER_CONFIG.lineTerminatorsPattern) {
            this.config.lineTerminatorsPattern = LineTerminatorOptimizedTester;
          } else {
            if (this.config.lineTerminatorCharacters === DEFAULT_LEXER_CONFIG.lineTerminatorCharacters) {
              throw Error(
                "Error: Missing <lineTerminatorCharacters> property on the Lexer config.\n	For details See: https://chevrotain.io/docs/guide/resolving_lexer_errors.html#MISSING_LINE_TERM_CHARS"
              );
            }
          }
          if (config.safeMode && config.ensureOptimizations) {
            throw Error('"safeMode" and "ensureOptimizations" flags are mutually exclusive.');
          }
          this.trackStartLines = /full|onlyStart/i.test(this.config.positionTracking);
          this.trackEndLines = /full/i.test(this.config.positionTracking);
          if (isArray$1(lexerDefinition)) {
            actualDefinition = {
              modes: { defaultMode: clone(lexerDefinition) },
              defaultMode: DEFAULT_MODE
            };
          } else {
            hasOnlySingleMode = false;
            actualDefinition = clone(lexerDefinition);
          }
        });
        if (this.config.skipValidations === false) {
          this.TRACE_INIT("performRuntimeChecks", () => {
            this.lexerDefinitionErrors = this.lexerDefinitionErrors.concat(
              performRuntimeChecks(actualDefinition, this.trackStartLines, this.config.lineTerminatorCharacters)
            );
          });
          this.TRACE_INIT("performWarningRuntimeChecks", () => {
            this.lexerDefinitionWarning = this.lexerDefinitionWarning.concat(
              performWarningRuntimeChecks(actualDefinition, this.trackStartLines, this.config.lineTerminatorCharacters)
            );
          });
        }
        actualDefinition.modes = actualDefinition.modes ? actualDefinition.modes : {};
        forEach(actualDefinition.modes, (currModeValue, currModeName) => {
          actualDefinition.modes[currModeName] = reject(currModeValue, (currTokType) => isUndefined(currTokType));
        });
        const allModeNames = keys(actualDefinition.modes);
        forEach(actualDefinition.modes, (currModDef, currModName) => {
          this.TRACE_INIT(`Mode: <${currModName}> processing`, () => {
            this.modes.push(currModName);
            if (this.config.skipValidations === false) {
              this.TRACE_INIT(`validatePatterns`, () => {
                this.lexerDefinitionErrors = this.lexerDefinitionErrors.concat(
                  validatePatterns(currModDef, allModeNames)
                );
              });
            }
            if (isEmpty(this.lexerDefinitionErrors)) {
              augmentTokenTypes(currModDef);
              let currAnalyzeResult;
              this.TRACE_INIT(`analyzeTokenTypes`, () => {
                currAnalyzeResult = analyzeTokenTypes(currModDef, {
                  lineTerminatorCharacters: this.config.lineTerminatorCharacters,
                  positionTracking: config.positionTracking,
                  ensureOptimizations: config.ensureOptimizations,
                  safeMode: config.safeMode,
                  tracer: this.TRACE_INIT
                });
              });
              this.patternIdxToConfig[currModName] = currAnalyzeResult.patternIdxToConfig;
              this.charCodeToPatternIdxToConfig[currModName] = currAnalyzeResult.charCodeToPatternIdxToConfig;
              this.emptyGroups = assign$1({}, this.emptyGroups, currAnalyzeResult.emptyGroups);
              this.hasCustom = currAnalyzeResult.hasCustom || this.hasCustom;
              this.canModeBeOptimized[currModName] = currAnalyzeResult.canBeOptimized;
            }
          });
        });
        this.defaultMode = actualDefinition.defaultMode;
        if (!isEmpty(this.lexerDefinitionErrors) && !this.config.deferDefinitionErrorsHandling) {
          const allErrMessages = map(this.lexerDefinitionErrors, (error) => {
            return error.message;
          });
          const allErrMessagesString = allErrMessages.join("-----------------------\n");
          throw new Error("Errors detected in definition of Lexer:\n" + allErrMessagesString);
        }
        forEach(this.lexerDefinitionWarning, (warningDescriptor) => {
          PRINT_WARNING(warningDescriptor.message);
        });
        this.TRACE_INIT("Choosing sub-methods implementations", () => {
          if (SUPPORT_STICKY) {
            this.chopInput = identity;
            this.match = this.matchWithTest;
          } else {
            this.updateLastIndex = noop;
            this.match = this.matchWithExec;
          }
          if (hasOnlySingleMode) {
            this.handleModes = noop;
          }
          if (this.trackStartLines === false) {
            this.computeNewColumn = identity;
          }
          if (this.trackEndLines === false) {
            this.updateTokenEndLineColumnLocation = noop;
          }
          if (/full/i.test(this.config.positionTracking)) {
            this.createTokenInstance = this.createFullToken;
          } else if (/onlyStart/i.test(this.config.positionTracking)) {
            this.createTokenInstance = this.createStartOnlyToken;
          } else if (/onlyOffset/i.test(this.config.positionTracking)) {
            this.createTokenInstance = this.createOffsetOnlyToken;
          } else {
            throw Error(`Invalid <positionTracking> config option: "${this.config.positionTracking}"`);
          }
          if (this.hasCustom) {
            this.addToken = this.addTokenUsingPush;
            this.handlePayload = this.handlePayloadWithCustom;
          } else {
            this.addToken = this.addTokenUsingMemberAccess;
            this.handlePayload = this.handlePayloadNoCustom;
          }
        });
        this.TRACE_INIT("Failed Optimization Warnings", () => {
          const unOptimizedModes = reduce(
            this.canModeBeOptimized,
            (cannotBeOptimized, canBeOptimized, modeName) => {
              if (canBeOptimized === false) {
                cannotBeOptimized.push(modeName);
              }
              return cannotBeOptimized;
            },
            []
          );
          if (config.ensureOptimizations && !isEmpty(unOptimizedModes)) {
            throw Error(
              `Lexer Modes: < ${unOptimizedModes.join(", ")} > cannot be optimized.
	 Disable the "ensureOptimizations" lexer config flag to silently ignore this and run the lexer in an un-optimized mode.
	 Or inspect the console log for details on how to resolve these issues.`
            );
          }
        });
        this.TRACE_INIT("clearRegExpParserCache", () => {
          clearRegExpParserCache();
        });
        this.TRACE_INIT("toFastProperties", () => {
          toFastProperties(this);
        });
      });
    }
    tokenize(text, initialMode = this.defaultMode) {
      if (!isEmpty(this.lexerDefinitionErrors)) {
        const allErrMessages = map(this.lexerDefinitionErrors, (error) => {
          return error.message;
        });
        const allErrMessagesString = allErrMessages.join("-----------------------\n");
        throw new Error("Unable to Tokenize because Errors detected in definition of Lexer:\n" + allErrMessagesString);
      }
      return this.tokenizeInternal(text, initialMode);
    }
    // There is quite a bit of duplication between this and "tokenizeInternalLazy"
    // This is intentional due to performance considerations.
    // this method also used quite a bit of `!` none null assertions because it is too optimized
    // for `tsc` to always understand it is "safe"
    tokenizeInternal(text, initialMode) {
      let i, j, k, matchAltImage, longerAlt, matchedImage, payload, altPayload, imageLength, group, tokType, newToken, errLength, msg, match;
      const orgText = text;
      const orgLength = orgText.length;
      let offset = 0;
      let matchedTokensIndex = 0;
      const guessedNumberOfTokens = this.hasCustom ? 0 : Math.floor(text.length / 10);
      const matchedTokens = new Array(guessedNumberOfTokens);
      const errors = [];
      let line = this.trackStartLines ? 1 : void 0;
      let column = this.trackStartLines ? 1 : void 0;
      const groups = cloneEmptyGroups(this.emptyGroups);
      const trackLines = this.trackStartLines;
      const lineTerminatorPattern = this.config.lineTerminatorsPattern;
      let currModePatternsLength = 0;
      let patternIdxToConfig = [];
      let currCharCodeToPatternIdxToConfig = [];
      const modeStack = [];
      const emptyArray = [];
      Object.freeze(emptyArray);
      let getPossiblePatterns;
      function getPossiblePatternsSlow() {
        return patternIdxToConfig;
      }
      function getPossiblePatternsOptimized(charCode) {
        const optimizedCharIdx = charCodeToOptimizedIndex(charCode);
        const possiblePatterns = currCharCodeToPatternIdxToConfig[optimizedCharIdx];
        if (possiblePatterns === void 0) {
          return emptyArray;
        } else {
          return possiblePatterns;
        }
      }
      const pop_mode = (popToken) => {
        if (modeStack.length === 1 && // if we have both a POP_MODE and a PUSH_MODE this is in-fact a "transition"
        // So no error should occur.
        popToken.tokenType.PUSH_MODE === void 0) {
          const msg2 = this.config.errorMessageProvider.buildUnableToPopLexerModeMessage(popToken);
          errors.push({
            offset: popToken.startOffset,
            line: popToken.startLine,
            column: popToken.startColumn,
            length: popToken.image.length,
            message: msg2
          });
        } else {
          modeStack.pop();
          const newMode = last(modeStack);
          patternIdxToConfig = this.patternIdxToConfig[newMode];
          currCharCodeToPatternIdxToConfig = this.charCodeToPatternIdxToConfig[newMode];
          currModePatternsLength = patternIdxToConfig.length;
          const modeCanBeOptimized = this.canModeBeOptimized[newMode] && this.config.safeMode === false;
          if (currCharCodeToPatternIdxToConfig && modeCanBeOptimized) {
            getPossiblePatterns = getPossiblePatternsOptimized;
          } else {
            getPossiblePatterns = getPossiblePatternsSlow;
          }
        }
      };
      function push_mode(newMode) {
        modeStack.push(newMode);
        currCharCodeToPatternIdxToConfig = this.charCodeToPatternIdxToConfig[newMode];
        patternIdxToConfig = this.patternIdxToConfig[newMode];
        currModePatternsLength = patternIdxToConfig.length;
        currModePatternsLength = patternIdxToConfig.length;
        const modeCanBeOptimized = this.canModeBeOptimized[newMode] && this.config.safeMode === false;
        if (currCharCodeToPatternIdxToConfig && modeCanBeOptimized) {
          getPossiblePatterns = getPossiblePatternsOptimized;
        } else {
          getPossiblePatterns = getPossiblePatternsSlow;
        }
      }
      push_mode.call(this, initialMode);
      let currConfig;
      const recoveryEnabled = this.config.recoveryEnabled;
      while (offset < orgLength) {
        matchedImage = null;
        const nextCharCode = orgText.charCodeAt(offset);
        const chosenPatternIdxToConfig = getPossiblePatterns(nextCharCode);
        const chosenPatternsLength = chosenPatternIdxToConfig.length;
        for (i = 0; i < chosenPatternsLength; i++) {
          currConfig = chosenPatternIdxToConfig[i];
          const currPattern = currConfig.pattern;
          payload = null;
          const singleCharCode = currConfig.short;
          if (singleCharCode !== false) {
            if (nextCharCode === singleCharCode) {
              matchedImage = currPattern;
            }
          } else if (currConfig.isCustom === true) {
            match = currPattern.exec(orgText, offset, matchedTokens, groups);
            if (match !== null) {
              matchedImage = match[0];
              if (match.payload !== void 0) {
                payload = match.payload;
              }
            } else {
              matchedImage = null;
            }
          } else {
            this.updateLastIndex(currPattern, offset);
            matchedImage = this.match(currPattern, text, offset);
          }
          if (matchedImage !== null) {
            longerAlt = currConfig.longerAlt;
            if (longerAlt !== void 0) {
              const longerAltLength = longerAlt.length;
              for (k = 0; k < longerAltLength; k++) {
                const longerAltConfig = patternIdxToConfig[longerAlt[k]];
                const longerAltPattern = longerAltConfig.pattern;
                altPayload = null;
                if (longerAltConfig.isCustom === true) {
                  match = longerAltPattern.exec(orgText, offset, matchedTokens, groups);
                  if (match !== null) {
                    matchAltImage = match[0];
                    if (match.payload !== void 0) {
                      altPayload = match.payload;
                    }
                  } else {
                    matchAltImage = null;
                  }
                } else {
                  this.updateLastIndex(longerAltPattern, offset);
                  matchAltImage = this.match(longerAltPattern, text, offset);
                }
                if (matchAltImage && matchAltImage.length > matchedImage.length) {
                  matchedImage = matchAltImage;
                  payload = altPayload;
                  currConfig = longerAltConfig;
                  break;
                }
              }
            }
            break;
          }
        }
        if (matchedImage !== null) {
          imageLength = matchedImage.length;
          group = currConfig.group;
          if (group !== void 0) {
            tokType = currConfig.tokenTypeIdx;
            newToken = this.createTokenInstance(
              matchedImage,
              offset,
              tokType,
              currConfig.tokenType,
              line,
              column,
              imageLength
            );
            this.handlePayload(newToken, payload);
            if (group === false) {
              matchedTokensIndex = this.addToken(matchedTokens, matchedTokensIndex, newToken);
            } else {
              groups[group].push(newToken);
            }
          }
          text = this.chopInput(text, imageLength);
          offset = offset + imageLength;
          column = this.computeNewColumn(column, imageLength);
          if (trackLines === true && currConfig.canLineTerminator === true) {
            let numOfLTsInMatch = 0;
            let foundTerminator;
            let lastLTEndOffset;
            lineTerminatorPattern.lastIndex = 0;
            do {
              foundTerminator = lineTerminatorPattern.test(matchedImage);
              if (foundTerminator === true) {
                lastLTEndOffset = lineTerminatorPattern.lastIndex - 1;
                numOfLTsInMatch++;
              }
            } while (foundTerminator === true);
            if (numOfLTsInMatch !== 0) {
              line = line + numOfLTsInMatch;
              column = imageLength - lastLTEndOffset;
              this.updateTokenEndLineColumnLocation(
                newToken,
                group,
                lastLTEndOffset,
                numOfLTsInMatch,
                line,
                column,
                imageLength
              );
            }
          }
          this.handleModes(currConfig, pop_mode, push_mode, newToken);
        } else {
          const errorStartOffset = offset;
          const errorLine = line;
          const errorColumn = column;
          let foundResyncPoint = recoveryEnabled === false;
          while (foundResyncPoint === false && offset < orgLength) {
            text = this.chopInput(text, 1);
            offset++;
            for (j = 0; j < currModePatternsLength; j++) {
              const currConfig2 = patternIdxToConfig[j];
              const currPattern = currConfig2.pattern;
              const singleCharCode = currConfig2.short;
              if (singleCharCode !== false) {
                if (orgText.charCodeAt(offset) === singleCharCode) {
                  foundResyncPoint = true;
                }
              } else if (currConfig2.isCustom === true) {
                foundResyncPoint = currPattern.exec(orgText, offset, matchedTokens, groups) !== null;
              } else {
                this.updateLastIndex(currPattern, offset);
                foundResyncPoint = currPattern.exec(text) !== null;
              }
              if (foundResyncPoint === true) {
                break;
              }
            }
          }
          errLength = offset - errorStartOffset;
          column = this.computeNewColumn(column, errLength);
          msg = this.config.errorMessageProvider.buildUnexpectedCharactersMessage(
            orgText,
            errorStartOffset,
            errLength,
            errorLine,
            errorColumn
          );
          errors.push({
            offset: errorStartOffset,
            line: errorLine,
            column: errorColumn,
            length: errLength,
            message: msg
          });
          if (recoveryEnabled === false) {
            break;
          }
        }
      }
      if (!this.hasCustom) {
        matchedTokens.length = matchedTokensIndex;
      }
      return {
        tokens: matchedTokens,
        groups,
        errors
      };
    }
    handleModes(config, pop_mode, push_mode, newToken) {
      if (config.pop === true) {
        const pushMode = config.push;
        pop_mode(newToken);
        if (pushMode !== void 0) {
          push_mode.call(this, pushMode);
        }
      } else if (config.push !== void 0) {
        push_mode.call(this, config.push);
      }
    }
    chopInput(text, length) {
      return text.substring(length);
    }
    updateLastIndex(regExp, newLastIndex) {
      regExp.lastIndex = newLastIndex;
    }
    // TODO: decrease this under 600 characters? inspect stripping comments option in TSC compiler
    updateTokenEndLineColumnLocation(newToken, group, lastLTIdx, numOfLTsInMatch, line, column, imageLength) {
      let lastCharIsLT, fixForEndingInLT;
      if (group !== void 0) {
        lastCharIsLT = lastLTIdx === imageLength - 1;
        fixForEndingInLT = lastCharIsLT ? -1 : 0;
        if (!(numOfLTsInMatch === 1 && lastCharIsLT === true)) {
          newToken.endLine = line + fixForEndingInLT;
          newToken.endColumn = column - 1 + -fixForEndingInLT;
        }
      }
    }
    computeNewColumn(oldColumn, imageLength) {
      return oldColumn + imageLength;
    }
    createOffsetOnlyToken(image, startOffset, tokenTypeIdx, tokenType) {
      return {
        image,
        startOffset,
        tokenTypeIdx,
        tokenType
      };
    }
    createStartOnlyToken(image, startOffset, tokenTypeIdx, tokenType, startLine, startColumn) {
      return {
        image,
        startOffset,
        startLine,
        startColumn,
        tokenTypeIdx,
        tokenType
      };
    }
    createFullToken(image, startOffset, tokenTypeIdx, tokenType, startLine, startColumn, imageLength) {
      return {
        image,
        startOffset,
        endOffset: startOffset + imageLength - 1,
        startLine,
        endLine: startLine,
        startColumn,
        endColumn: startColumn + imageLength - 1,
        tokenTypeIdx,
        tokenType
      };
    }
    addTokenUsingPush(tokenVector, index, tokenToAdd) {
      tokenVector.push(tokenToAdd);
      return index;
    }
    addTokenUsingMemberAccess(tokenVector, index, tokenToAdd) {
      tokenVector[index] = tokenToAdd;
      index++;
      return index;
    }
    handlePayloadNoCustom(token, payload) {
    }
    handlePayloadWithCustom(token, payload) {
      if (payload !== null) {
        token.payload = payload;
      }
    }
    matchWithTest(pattern, text, offset) {
      const found = pattern.test(text);
      if (found === true) {
        return text.substring(offset, pattern.lastIndex);
      }
      return null;
    }
    matchWithExec(pattern, text) {
      const regExpArray = pattern.exec(text);
      return regExpArray !== null ? regExpArray[0] : null;
    }
  }
  Lexer2.SKIPPED = "This marks a skipped Token pattern, this means each token identified by it willbe consumed and then thrown into oblivion, this can be used to for example to completely ignore whitespace.";
  Lexer2.NA = /NOT_APPLICABLE/;
  function tokenLabel(tokType) {
    if (hasTokenLabel(tokType)) {
      return tokType.LABEL;
    } else {
      return tokType.name;
    }
  }
  function hasTokenLabel(obj) {
    return isString(obj.LABEL) && obj.LABEL !== "";
  }
  const PARENT = "parent";
  const CATEGORIES = "categories";
  const LABEL = "label";
  const GROUP = "group";
  const PUSH_MODE = "push_mode";
  const POP_MODE = "pop_mode";
  const LONGER_ALT = "longer_alt";
  const LINE_BREAKS = "line_breaks";
  const START_CHARS_HINT = "start_chars_hint";
  function createToken2(config) {
    return createTokenInternal(config);
  }
  function createTokenInternal(config) {
    const pattern = config.pattern;
    const tokenType = {};
    tokenType.name = config.name;
    if (!isUndefined(pattern)) {
      tokenType.PATTERN = pattern;
    }
    if (has(config, PARENT)) {
      throw "The parent property is no longer supported.\nSee: https://github.com/chevrotain/chevrotain/issues/564#issuecomment-349062346 for details.";
    }
    if (has(config, CATEGORIES)) {
      tokenType.CATEGORIES = config[CATEGORIES];
    }
    augmentTokenTypes([tokenType]);
    if (has(config, LABEL)) {
      tokenType.LABEL = config[LABEL];
    }
    if (has(config, GROUP)) {
      tokenType.GROUP = config[GROUP];
    }
    if (has(config, POP_MODE)) {
      tokenType.POP_MODE = config[POP_MODE];
    }
    if (has(config, PUSH_MODE)) {
      tokenType.PUSH_MODE = config[PUSH_MODE];
    }
    if (has(config, LONGER_ALT)) {
      tokenType.LONGER_ALT = config[LONGER_ALT];
    }
    if (has(config, LINE_BREAKS)) {
      tokenType.LINE_BREAKS = config[LINE_BREAKS];
    }
    if (has(config, START_CHARS_HINT)) {
      tokenType.START_CHARS_HINT = config[START_CHARS_HINT];
    }
    return tokenType;
  }
  const EOF = createToken2({ name: "EOF", pattern: Lexer2.NA });
  augmentTokenTypes([EOF]);
  function createTokenInstance(tokType, image, startOffset, endOffset, startLine, endLine, startColumn, endColumn) {
    return {
      image,
      startOffset,
      endOffset,
      startLine,
      endLine,
      startColumn,
      endColumn,
      tokenTypeIdx: tokType.tokenTypeIdx,
      tokenType: tokType
    };
  }
  function tokenMatcher(token, tokType) {
    return tokenStructuredMatcher(token, tokType);
  }
  const defaultParserErrorProvider = {
    buildMismatchTokenMessage({ expected, actual, previous, ruleName }) {
      const hasLabel = hasTokenLabel(expected);
      const expectedMsg = hasLabel ? `--> ${tokenLabel(expected)} <--` : `token of type --> ${expected.name} <--`;
      const msg = `Expecting ${expectedMsg} but found --> '${actual.image}' <--`;
      return msg;
    },
    buildNotAllInputParsedMessage({ firstRedundant, ruleName }) {
      return "Redundant input, expecting EOF but found: " + firstRedundant.image;
    },
    buildNoViableAltMessage({ expectedPathsPerAlt, actual, previous, customUserDescription, ruleName }) {
      const errPrefix = "Expecting: ";
      const actualText = head(actual).image;
      const errSuffix = "\nbut found: '" + actualText + "'";
      if (customUserDescription) {
        return errPrefix + customUserDescription + errSuffix;
      } else {
        const allLookAheadPaths = reduce(expectedPathsPerAlt, (result, currAltPaths) => result.concat(currAltPaths), []);
        const nextValidTokenSequences = map(
          allLookAheadPaths,
          (currPath) => `[${map(currPath, (currTokenType) => tokenLabel(currTokenType)).join(", ")}]`
        );
        const nextValidSequenceItems = map(nextValidTokenSequences, (itemMsg, idx) => `  ${idx + 1}. ${itemMsg}`);
        const calculatedDescription = `one of these possible Token sequences:
${nextValidSequenceItems.join("\n")}`;
        return errPrefix + calculatedDescription + errSuffix;
      }
    },
    buildEarlyExitMessage({ expectedIterationPaths, actual, customUserDescription, ruleName }) {
      const errPrefix = "Expecting: ";
      const actualText = head(actual).image;
      const errSuffix = "\nbut found: '" + actualText + "'";
      if (customUserDescription) {
        return errPrefix + customUserDescription + errSuffix;
      } else {
        const nextValidTokenSequences = map(
          expectedIterationPaths,
          (currPath) => `[${map(currPath, (currTokenType) => tokenLabel(currTokenType)).join(",")}]`
        );
        const calculatedDescription = `expecting at least one iteration which starts with one of these possible Token sequences::
  <${nextValidTokenSequences.join(" ,")}>`;
        return errPrefix + calculatedDescription + errSuffix;
      }
    }
  };
  Object.freeze(defaultParserErrorProvider);
  const defaultGrammarResolverErrorProvider = {
    buildRuleNotFoundError(topLevelRule, undefinedRule) {
      const msg = "Invalid grammar, reference to a rule which is not defined: ->" + undefinedRule.nonTerminalName + "<-\ninside top level rule: ->" + topLevelRule.name + "<-";
      return msg;
    }
  };
  const defaultGrammarValidatorErrorProvider = {
    buildDuplicateFoundError(topLevelRule, duplicateProds) {
      function getExtraProductionArgument2(prod) {
        if (prod instanceof Terminal) {
          return prod.terminalType.name;
        } else if (prod instanceof NonTerminal) {
          return prod.nonTerminalName;
        } else {
          return "";
        }
      }
      const topLevelName = topLevelRule.name;
      const duplicateProd = head(duplicateProds);
      const index = duplicateProd.idx;
      const dslName = getProductionDslName(duplicateProd);
      const extraArgument = getExtraProductionArgument2(duplicateProd);
      const hasExplicitIndex = index > 0;
      let msg = `->${dslName}${hasExplicitIndex ? index : ""}<- ${extraArgument ? `with argument: ->${extraArgument}<-` : ""}
                  appears more than once (${duplicateProds.length} times) in the top level rule: ->${topLevelName}<-.                  
                  For further details see: https://chevrotain.io/docs/FAQ.html#NUMERICAL_SUFFIXES 
                  `;
      msg = msg.replace(/[ \t]+/g, " ");
      msg = msg.replace(/\s\s+/g, "\n");
      return msg;
    },
    buildNamespaceConflictError(rule) {
      const errMsg = `Namespace conflict found in grammar.
The grammar has both a Terminal(Token) and a Non-Terminal(Rule) named: <${rule.name}>.
To resolve this make sure each Terminal and Non-Terminal names are unique
This is easy to accomplish by using the convention that Terminal names start with an uppercase letter
and Non-Terminal names start with a lower case letter.`;
      return errMsg;
    },
    buildAlternationPrefixAmbiguityError(options) {
      const pathMsg = map(options.prefixPath, (currTok) => tokenLabel(currTok)).join(", ");
      const occurrence = options.alternation.idx === 0 ? "" : options.alternation.idx;
      const errMsg = `Ambiguous alternatives: <${options.ambiguityIndices.join(" ,")}> due to common lookahead prefix
in <OR${occurrence}> inside <${options.topLevelRule.name}> Rule,
<${pathMsg}> may appears as a prefix path in all these alternatives.
See: https://chevrotain.io/docs/guide/resolving_grammar_errors.html#COMMON_PREFIX
For Further details.`;
      return errMsg;
    },
    buildAlternationAmbiguityError(options) {
      const pathMsg = map(options.prefixPath, (currtok) => tokenLabel(currtok)).join(", ");
      const occurrence = options.alternation.idx === 0 ? "" : options.alternation.idx;
      let currMessage = `Ambiguous Alternatives Detected: <${options.ambiguityIndices.join(" ,")}> in <OR${occurrence}> inside <${options.topLevelRule.name}> Rule,
<${pathMsg}> may appears as a prefix path in all these alternatives.
`;
      currMessage = currMessage + `See: https://chevrotain.io/docs/guide/resolving_grammar_errors.html#AMBIGUOUS_ALTERNATIVES
For Further details.`;
      return currMessage;
    },
    buildEmptyRepetitionError(options) {
      let dslName = getProductionDslName(options.repetition);
      if (options.repetition.idx !== 0) {
        dslName += options.repetition.idx;
      }
      const errMsg = `The repetition <${dslName}> within Rule <${options.topLevelRule.name}> can never consume any tokens.
This could lead to an infinite loop.`;
      return errMsg;
    },
    // TODO: remove - `errors_public` from nyc.config.js exclude
    //       once this method is fully removed from this file
    buildTokenNameError(options) {
      return "deprecated";
    },
    buildEmptyAlternationError(options) {
      const errMsg = `Ambiguous empty alternative: <${options.emptyChoiceIdx + 1}> in <OR${options.alternation.idx}> inside <${options.topLevelRule.name}> Rule.
Only the last alternative may be an empty alternative.`;
      return errMsg;
    },
    buildTooManyAlternativesError(options) {
      const errMsg = `An Alternation cannot have more than 256 alternatives:
<OR${options.alternation.idx}> inside <${options.topLevelRule.name}> Rule.
 has ${options.alternation.definition.length + 1} alternatives.`;
      return errMsg;
    },
    buildLeftRecursionError(options) {
      const ruleName = options.topLevelRule.name;
      const pathNames = map(options.leftRecursionPath, (currRule) => currRule.name);
      const leftRecursivePath = `${ruleName} --> ${pathNames.concat([ruleName]).join(" --> ")}`;
      const errMsg = `Left Recursion found in grammar.
rule: <${ruleName}> can be invoked from itself (directly or indirectly)
without consuming any Tokens. The grammar path that causes this is: 
 ${leftRecursivePath}
 To fix this refactor your grammar to remove the left recursion.
see: https://en.wikipedia.org/wiki/LL_parser#Left_factoring.`;
      return errMsg;
    },
    // TODO: remove - `errors_public` from nyc.config.js exclude
    //       once this method is fully removed from this file
    buildInvalidRuleNameError(options) {
      return "deprecated";
    },
    buildDuplicateRuleNameError(options) {
      let ruleName;
      if (options.topLevelRule instanceof Rule) {
        ruleName = options.topLevelRule.name;
      } else {
        ruleName = options.topLevelRule;
      }
      const errMsg = `Duplicate definition, rule: ->${ruleName}<- is already defined in the grammar: ->${options.grammarName}<-`;
      return errMsg;
    }
  };
  function resolveGrammar$1(topLevels, errMsgProvider) {
    const refResolver = new GastRefResolverVisitor(topLevels, errMsgProvider);
    refResolver.resolveRefs();
    return refResolver.errors;
  }
  class GastRefResolverVisitor extends GAstVisitor {
    constructor(nameToTopRule, errMsgProvider) {
      super();
      this.nameToTopRule = nameToTopRule;
      this.errMsgProvider = errMsgProvider;
      this.errors = [];
    }
    resolveRefs() {
      forEach(values(this.nameToTopRule), (prod) => {
        this.currTopLevel = prod;
        prod.accept(this);
      });
    }
    visitNonTerminal(node) {
      const ref = this.nameToTopRule[node.nonTerminalName];
      if (!ref) {
        const msg = this.errMsgProvider.buildRuleNotFoundError(this.currTopLevel, node);
        this.errors.push({
          message: msg,
          type: ParserDefinitionErrorType.UNRESOLVED_SUBRULE_REF,
          ruleName: this.currTopLevel.name,
          unresolvedRefName: node.nonTerminalName
        });
      } else {
        node.referencedRule = ref;
      }
    }
  }
  class AbstractNextPossibleTokensWalker extends RestWalker {
    constructor(topProd, path) {
      super();
      this.topProd = topProd;
      this.path = path;
      this.possibleTokTypes = [];
      this.nextProductionName = "";
      this.nextProductionOccurrence = 0;
      this.found = false;
      this.isAtEndOfPath = false;
    }
    startWalking() {
      this.found = false;
      if (this.path.ruleStack[0] !== this.topProd.name) {
        throw Error("The path does not start with the walker's top Rule!");
      }
      this.ruleStack = clone(this.path.ruleStack).reverse();
      this.occurrenceStack = clone(this.path.occurrenceStack).reverse();
      this.ruleStack.pop();
      this.occurrenceStack.pop();
      this.updateExpectedNext();
      this.walk(this.topProd);
      return this.possibleTokTypes;
    }
    walk(prod, prevRest = []) {
      if (!this.found) {
        super.walk(prod, prevRest);
      }
    }
    walkProdRef(refProd, currRest, prevRest) {
      if (refProd.referencedRule.name === this.nextProductionName && refProd.idx === this.nextProductionOccurrence) {
        const fullRest = currRest.concat(prevRest);
        this.updateExpectedNext();
        this.walk(refProd.referencedRule, fullRest);
      }
    }
    updateExpectedNext() {
      if (isEmpty(this.ruleStack)) {
        this.nextProductionName = "";
        this.nextProductionOccurrence = 0;
        this.isAtEndOfPath = true;
      } else {
        this.nextProductionName = this.ruleStack.pop();
        this.nextProductionOccurrence = this.occurrenceStack.pop();
      }
    }
  }
  class NextAfterTokenWalker extends AbstractNextPossibleTokensWalker {
    constructor(topProd, path) {
      super(topProd, path);
      this.path = path;
      this.nextTerminalName = "";
      this.nextTerminalOccurrence = 0;
      this.nextTerminalName = this.path.lastTok.name;
      this.nextTerminalOccurrence = this.path.lastTokOccurrence;
    }
    walkTerminal(terminal, currRest, prevRest) {
      if (this.isAtEndOfPath && terminal.terminalType.name === this.nextTerminalName && terminal.idx === this.nextTerminalOccurrence && !this.found) {
        const fullRest = currRest.concat(prevRest);
        const restProd = new Alternative({ definition: fullRest });
        this.possibleTokTypes = first(restProd);
        this.found = true;
      }
    }
  }
  class AbstractNextTerminalAfterProductionWalker extends RestWalker {
    constructor(topRule, occurrence) {
      super();
      this.topRule = topRule;
      this.occurrence = occurrence;
      this.result = {
        token: void 0,
        occurrence: void 0,
        isEndOfRule: void 0
      };
    }
    startWalking() {
      this.walk(this.topRule);
      return this.result;
    }
  }
  class NextTerminalAfterManyWalker extends AbstractNextTerminalAfterProductionWalker {
    walkMany(manyProd, currRest, prevRest) {
      if (manyProd.idx === this.occurrence) {
        const firstAfterMany = head(currRest.concat(prevRest));
        this.result.isEndOfRule = firstAfterMany === void 0;
        if (firstAfterMany instanceof Terminal) {
          this.result.token = firstAfterMany.terminalType;
          this.result.occurrence = firstAfterMany.idx;
        }
      } else {
        super.walkMany(manyProd, currRest, prevRest);
      }
    }
  }
  class NextTerminalAfterManySepWalker extends AbstractNextTerminalAfterProductionWalker {
    walkManySep(manySepProd, currRest, prevRest) {
      if (manySepProd.idx === this.occurrence) {
        const firstAfterManySep = head(currRest.concat(prevRest));
        this.result.isEndOfRule = firstAfterManySep === void 0;
        if (firstAfterManySep instanceof Terminal) {
          this.result.token = firstAfterManySep.terminalType;
          this.result.occurrence = firstAfterManySep.idx;
        }
      } else {
        super.walkManySep(manySepProd, currRest, prevRest);
      }
    }
  }
  class NextTerminalAfterAtLeastOneWalker extends AbstractNextTerminalAfterProductionWalker {
    walkAtLeastOne(atLeastOneProd, currRest, prevRest) {
      if (atLeastOneProd.idx === this.occurrence) {
        const firstAfterAtLeastOne = head(currRest.concat(prevRest));
        this.result.isEndOfRule = firstAfterAtLeastOne === void 0;
        if (firstAfterAtLeastOne instanceof Terminal) {
          this.result.token = firstAfterAtLeastOne.terminalType;
          this.result.occurrence = firstAfterAtLeastOne.idx;
        }
      } else {
        super.walkAtLeastOne(atLeastOneProd, currRest, prevRest);
      }
    }
  }
  class NextTerminalAfterAtLeastOneSepWalker extends AbstractNextTerminalAfterProductionWalker {
    walkAtLeastOneSep(atleastOneSepProd, currRest, prevRest) {
      if (atleastOneSepProd.idx === this.occurrence) {
        const firstAfterfirstAfterAtLeastOneSep = head(currRest.concat(prevRest));
        this.result.isEndOfRule = firstAfterfirstAfterAtLeastOneSep === void 0;
        if (firstAfterfirstAfterAtLeastOneSep instanceof Terminal) {
          this.result.token = firstAfterfirstAfterAtLeastOneSep.terminalType;
          this.result.occurrence = firstAfterfirstAfterAtLeastOneSep.idx;
        }
      } else {
        super.walkAtLeastOneSep(atleastOneSepProd, currRest, prevRest);
      }
    }
  }
  function possiblePathsFrom(targetDef, maxLength, currPath = []) {
    currPath = clone(currPath);
    let result = [];
    let i = 0;
    function remainingPathWith(nextDef) {
      return nextDef.concat(drop(targetDef, i + 1));
    }
    function getAlternativesForProd(definition) {
      const alternatives = possiblePathsFrom(remainingPathWith(definition), maxLength, currPath);
      return result.concat(alternatives);
    }
    while (currPath.length < maxLength && i < targetDef.length) {
      const prod = targetDef[i];
      if (prod instanceof Alternative) {
        return getAlternativesForProd(prod.definition);
      } else if (prod instanceof NonTerminal) {
        return getAlternativesForProd(prod.definition);
      } else if (prod instanceof Option) {
        result = getAlternativesForProd(prod.definition);
      } else if (prod instanceof RepetitionMandatory) {
        const newDef = prod.definition.concat([
          new Repetition({
            definition: prod.definition
          })
        ]);
        return getAlternativesForProd(newDef);
      } else if (prod instanceof RepetitionMandatoryWithSeparator) {
        const newDef = [
          new Alternative({ definition: prod.definition }),
          new Repetition({
            definition: [new Terminal({ terminalType: prod.separator })].concat(prod.definition)
          })
        ];
        return getAlternativesForProd(newDef);
      } else if (prod instanceof RepetitionWithSeparator) {
        const newDef = prod.definition.concat([
          new Repetition({
            definition: [new Terminal({ terminalType: prod.separator })].concat(prod.definition)
          })
        ]);
        result = getAlternativesForProd(newDef);
      } else if (prod instanceof Repetition) {
        const newDef = prod.definition.concat([
          new Repetition({
            definition: prod.definition
          })
        ]);
        result = getAlternativesForProd(newDef);
      } else if (prod instanceof Alternation) {
        forEach(prod.definition, (currAlt) => {
          if (isEmpty(currAlt.definition) === false) {
            result = getAlternativesForProd(currAlt.definition);
          }
        });
        return result;
      } else if (prod instanceof Terminal) {
        currPath.push(prod.terminalType);
      } else {
        throw Error("non exhaustive match");
      }
      i++;
    }
    result.push({
      partialPath: currPath,
      suffixDef: drop(targetDef, i)
    });
    return result;
  }
  function nextPossibleTokensAfter(initialDef, tokenVector, tokMatcher, maxLookAhead) {
    const EXIT_NON_TERMINAL = "EXIT_NONE_TERMINAL";
    const EXIT_NON_TERMINAL_ARR = [EXIT_NON_TERMINAL];
    const EXIT_ALTERNATIVE = "EXIT_ALTERNATIVE";
    let foundCompletePath = false;
    const tokenVectorLength = tokenVector.length;
    const minimalAlternativesIndex = tokenVectorLength - maxLookAhead - 1;
    const result = [];
    const possiblePaths = [];
    possiblePaths.push({
      idx: -1,
      def: initialDef,
      ruleStack: [],
      occurrenceStack: []
    });
    while (!isEmpty(possiblePaths)) {
      const currPath = possiblePaths.pop();
      if (currPath === EXIT_ALTERNATIVE) {
        if (foundCompletePath && last(possiblePaths).idx <= minimalAlternativesIndex) {
          possiblePaths.pop();
        }
        continue;
      }
      const currDef = currPath.def;
      const currIdx = currPath.idx;
      const currRuleStack = currPath.ruleStack;
      const currOccurrenceStack = currPath.occurrenceStack;
      if (isEmpty(currDef)) {
        continue;
      }
      const prod = currDef[0];
      if (prod === EXIT_NON_TERMINAL) {
        const nextPath = {
          idx: currIdx,
          def: drop(currDef),
          ruleStack: dropRight(currRuleStack),
          occurrenceStack: dropRight(currOccurrenceStack)
        };
        possiblePaths.push(nextPath);
      } else if (prod instanceof Terminal) {
        if (currIdx < tokenVectorLength - 1) {
          const nextIdx = currIdx + 1;
          const actualToken = tokenVector[nextIdx];
          if (tokMatcher(actualToken, prod.terminalType)) {
            const nextPath = {
              idx: nextIdx,
              def: drop(currDef),
              ruleStack: currRuleStack,
              occurrenceStack: currOccurrenceStack
            };
            possiblePaths.push(nextPath);
          }
        } else if (currIdx === tokenVectorLength - 1) {
          result.push({
            nextTokenType: prod.terminalType,
            nextTokenOccurrence: prod.idx,
            ruleStack: currRuleStack,
            occurrenceStack: currOccurrenceStack
          });
          foundCompletePath = true;
        } else {
          throw Error("non exhaustive match");
        }
      } else if (prod instanceof NonTerminal) {
        const newRuleStack = clone(currRuleStack);
        newRuleStack.push(prod.nonTerminalName);
        const newOccurrenceStack = clone(currOccurrenceStack);
        newOccurrenceStack.push(prod.idx);
        const nextPath = {
          idx: currIdx,
          def: prod.definition.concat(EXIT_NON_TERMINAL_ARR, drop(currDef)),
          ruleStack: newRuleStack,
          occurrenceStack: newOccurrenceStack
        };
        possiblePaths.push(nextPath);
      } else if (prod instanceof Option) {
        const nextPathWithout = {
          idx: currIdx,
          def: drop(currDef),
          ruleStack: currRuleStack,
          occurrenceStack: currOccurrenceStack
        };
        possiblePaths.push(nextPathWithout);
        possiblePaths.push(EXIT_ALTERNATIVE);
        const nextPathWith = {
          idx: currIdx,
          def: prod.definition.concat(drop(currDef)),
          ruleStack: currRuleStack,
          occurrenceStack: currOccurrenceStack
        };
        possiblePaths.push(nextPathWith);
      } else if (prod instanceof RepetitionMandatory) {
        const secondIteration = new Repetition({
          definition: prod.definition,
          idx: prod.idx
        });
        const nextDef = prod.definition.concat([secondIteration], drop(currDef));
        const nextPath = {
          idx: currIdx,
          def: nextDef,
          ruleStack: currRuleStack,
          occurrenceStack: currOccurrenceStack
        };
        possiblePaths.push(nextPath);
      } else if (prod instanceof RepetitionMandatoryWithSeparator) {
        const separatorGast = new Terminal({
          terminalType: prod.separator
        });
        const secondIteration = new Repetition({
          definition: [separatorGast].concat(prod.definition),
          idx: prod.idx
        });
        const nextDef = prod.definition.concat([secondIteration], drop(currDef));
        const nextPath = {
          idx: currIdx,
          def: nextDef,
          ruleStack: currRuleStack,
          occurrenceStack: currOccurrenceStack
        };
        possiblePaths.push(nextPath);
      } else if (prod instanceof RepetitionWithSeparator) {
        const nextPathWithout = {
          idx: currIdx,
          def: drop(currDef),
          ruleStack: currRuleStack,
          occurrenceStack: currOccurrenceStack
        };
        possiblePaths.push(nextPathWithout);
        possiblePaths.push(EXIT_ALTERNATIVE);
        const separatorGast = new Terminal({
          terminalType: prod.separator
        });
        const nthRepetition = new Repetition({
          definition: [separatorGast].concat(prod.definition),
          idx: prod.idx
        });
        const nextDef = prod.definition.concat([nthRepetition], drop(currDef));
        const nextPathWith = {
          idx: currIdx,
          def: nextDef,
          ruleStack: currRuleStack,
          occurrenceStack: currOccurrenceStack
        };
        possiblePaths.push(nextPathWith);
      } else if (prod instanceof Repetition) {
        const nextPathWithout = {
          idx: currIdx,
          def: drop(currDef),
          ruleStack: currRuleStack,
          occurrenceStack: currOccurrenceStack
        };
        possiblePaths.push(nextPathWithout);
        possiblePaths.push(EXIT_ALTERNATIVE);
        const nthRepetition = new Repetition({
          definition: prod.definition,
          idx: prod.idx
        });
        const nextDef = prod.definition.concat([nthRepetition], drop(currDef));
        const nextPathWith = {
          idx: currIdx,
          def: nextDef,
          ruleStack: currRuleStack,
          occurrenceStack: currOccurrenceStack
        };
        possiblePaths.push(nextPathWith);
      } else if (prod instanceof Alternation) {
        for (let i = prod.definition.length - 1; i >= 0; i--) {
          const currAlt = prod.definition[i];
          const currAltPath = {
            idx: currIdx,
            def: currAlt.definition.concat(drop(currDef)),
            ruleStack: currRuleStack,
            occurrenceStack: currOccurrenceStack
          };
          possiblePaths.push(currAltPath);
          possiblePaths.push(EXIT_ALTERNATIVE);
        }
      } else if (prod instanceof Alternative) {
        possiblePaths.push({
          idx: currIdx,
          def: prod.definition.concat(drop(currDef)),
          ruleStack: currRuleStack,
          occurrenceStack: currOccurrenceStack
        });
      } else if (prod instanceof Rule) {
        possiblePaths.push(expandTopLevelRule(prod, currIdx, currRuleStack, currOccurrenceStack));
      } else {
        throw Error("non exhaustive match");
      }
    }
    return result;
  }
  function expandTopLevelRule(topRule, currIdx, currRuleStack, currOccurrenceStack) {
    const newRuleStack = clone(currRuleStack);
    newRuleStack.push(topRule.name);
    const newCurrOccurrenceStack = clone(currOccurrenceStack);
    newCurrOccurrenceStack.push(1);
    return {
      idx: currIdx,
      def: topRule.definition,
      ruleStack: newRuleStack,
      occurrenceStack: newCurrOccurrenceStack
    };
  }
  var PROD_TYPE;
  (function(PROD_TYPE2) {
    PROD_TYPE2[PROD_TYPE2["OPTION"] = 0] = "OPTION";
    PROD_TYPE2[PROD_TYPE2["REPETITION"] = 1] = "REPETITION";
    PROD_TYPE2[PROD_TYPE2["REPETITION_MANDATORY"] = 2] = "REPETITION_MANDATORY";
    PROD_TYPE2[PROD_TYPE2["REPETITION_MANDATORY_WITH_SEPARATOR"] = 3] = "REPETITION_MANDATORY_WITH_SEPARATOR";
    PROD_TYPE2[PROD_TYPE2["REPETITION_WITH_SEPARATOR"] = 4] = "REPETITION_WITH_SEPARATOR";
    PROD_TYPE2[PROD_TYPE2["ALTERNATION"] = 5] = "ALTERNATION";
  })(PROD_TYPE || (PROD_TYPE = {}));
  function getProdType(prod) {
    if (prod instanceof Option || prod === "Option") {
      return PROD_TYPE.OPTION;
    } else if (prod instanceof Repetition || prod === "Repetition") {
      return PROD_TYPE.REPETITION;
    } else if (prod instanceof RepetitionMandatory || prod === "RepetitionMandatory") {
      return PROD_TYPE.REPETITION_MANDATORY;
    } else if (prod instanceof RepetitionMandatoryWithSeparator || prod === "RepetitionMandatoryWithSeparator") {
      return PROD_TYPE.REPETITION_MANDATORY_WITH_SEPARATOR;
    } else if (prod instanceof RepetitionWithSeparator || prod === "RepetitionWithSeparator") {
      return PROD_TYPE.REPETITION_WITH_SEPARATOR;
    } else if (prod instanceof Alternation || prod === "Alternation") {
      return PROD_TYPE.ALTERNATION;
    } else {
      throw Error("non exhaustive match");
    }
  }
  function buildLookaheadFuncForOr(occurrence, ruleGrammar, maxLookahead, hasPredicates, dynamicTokensEnabled, laFuncBuilder) {
    const lookAheadPaths = getLookaheadPathsForOr(occurrence, ruleGrammar, maxLookahead);
    const tokenMatcher2 = areTokenCategoriesNotUsed(lookAheadPaths) ? tokenStructuredMatcherNoCategories : tokenStructuredMatcher;
    return laFuncBuilder(lookAheadPaths, hasPredicates, tokenMatcher2, dynamicTokensEnabled);
  }
  function buildLookaheadFuncForOptionalProd(occurrence, ruleGrammar, k, dynamicTokensEnabled, prodType, lookaheadBuilder) {
    const lookAheadPaths = getLookaheadPathsForOptionalProd(occurrence, ruleGrammar, prodType, k);
    const tokenMatcher2 = areTokenCategoriesNotUsed(lookAheadPaths) ? tokenStructuredMatcherNoCategories : tokenStructuredMatcher;
    return lookaheadBuilder(lookAheadPaths[0], tokenMatcher2, dynamicTokensEnabled);
  }
  function buildAlternativesLookAheadFunc(alts, hasPredicates, tokenMatcher2, dynamicTokensEnabled) {
    const numOfAlts = alts.length;
    const areAllOneTokenLookahead = every(alts, (currAlt) => {
      return every(currAlt, (currPath) => {
        return currPath.length === 1;
      });
    });
    if (hasPredicates) {
      return function(orAlts) {
        const predicates = map(orAlts, (currAlt) => currAlt.GATE);
        for (let t = 0; t < numOfAlts; t++) {
          const currAlt = alts[t];
          const currNumOfPaths = currAlt.length;
          const currPredicate = predicates[t];
          if (currPredicate !== void 0 && currPredicate.call(this) === false) {
            continue;
          }
          nextPath:
            for (let j = 0; j < currNumOfPaths; j++) {
              const currPath = currAlt[j];
              const currPathLength = currPath.length;
              for (let i = 0; i < currPathLength; i++) {
                const nextToken = this.LA(i + 1);
                if (tokenMatcher2(nextToken, currPath[i]) === false) {
                  continue nextPath;
                }
              }
              return t;
            }
        }
        return void 0;
      };
    } else if (areAllOneTokenLookahead && !dynamicTokensEnabled) {
      const singleTokenAlts = map(alts, (currAlt) => {
        return flatten(currAlt);
      });
      const choiceToAlt = reduce(
        singleTokenAlts,
        (result, currAlt, idx) => {
          forEach(currAlt, (currTokType) => {
            if (!has(result, currTokType.tokenTypeIdx)) {
              result[currTokType.tokenTypeIdx] = idx;
            }
            forEach(currTokType.categoryMatches, (currExtendingType) => {
              if (!has(result, currExtendingType)) {
                result[currExtendingType] = idx;
              }
            });
          });
          return result;
        },
        {}
      );
      return function() {
        const nextToken = this.LA(1);
        return choiceToAlt[nextToken.tokenTypeIdx];
      };
    } else {
      return function() {
        for (let t = 0; t < numOfAlts; t++) {
          const currAlt = alts[t];
          const currNumOfPaths = currAlt.length;
          nextPath:
            for (let j = 0; j < currNumOfPaths; j++) {
              const currPath = currAlt[j];
              const currPathLength = currPath.length;
              for (let i = 0; i < currPathLength; i++) {
                const nextToken = this.LA(i + 1);
                if (tokenMatcher2(nextToken, currPath[i]) === false) {
                  continue nextPath;
                }
              }
              return t;
            }
        }
        return void 0;
      };
    }
  }
  function buildSingleAlternativeLookaheadFunction(alt, tokenMatcher2, dynamicTokensEnabled) {
    const areAllOneTokenLookahead = every(alt, (currPath) => {
      return currPath.length === 1;
    });
    const numOfPaths = alt.length;
    if (areAllOneTokenLookahead && !dynamicTokensEnabled) {
      const singleTokensTypes = flatten(alt);
      if (singleTokensTypes.length === 1 && isEmpty(singleTokensTypes[0].categoryMatches)) {
        const expectedTokenType = singleTokensTypes[0];
        const expectedTokenUniqueKey = expectedTokenType.tokenTypeIdx;
        return function() {
          return this.LA(1).tokenTypeIdx === expectedTokenUniqueKey;
        };
      } else {
        const choiceToAlt = reduce(
          singleTokensTypes,
          (result, currTokType, idx) => {
            result[currTokType.tokenTypeIdx] = true;
            forEach(currTokType.categoryMatches, (currExtendingType) => {
              result[currExtendingType] = true;
            });
            return result;
          },
          []
        );
        return function() {
          const nextToken = this.LA(1);
          return choiceToAlt[nextToken.tokenTypeIdx] === true;
        };
      }
    } else {
      return function() {
        nextPath:
          for (let j = 0; j < numOfPaths; j++) {
            const currPath = alt[j];
            const currPathLength = currPath.length;
            for (let i = 0; i < currPathLength; i++) {
              const nextToken = this.LA(i + 1);
              if (tokenMatcher2(nextToken, currPath[i]) === false) {
                continue nextPath;
              }
            }
            return true;
          }
        return false;
      };
    }
  }
  class RestDefinitionFinderWalker extends RestWalker {
    constructor(topProd, targetOccurrence, targetProdType) {
      super();
      this.topProd = topProd;
      this.targetOccurrence = targetOccurrence;
      this.targetProdType = targetProdType;
    }
    startWalking() {
      this.walk(this.topProd);
      return this.restDef;
    }
    checkIsTarget(node, expectedProdType, currRest, prevRest) {
      if (node.idx === this.targetOccurrence && this.targetProdType === expectedProdType) {
        this.restDef = currRest.concat(prevRest);
        return true;
      }
      return false;
    }
    walkOption(optionProd, currRest, prevRest) {
      if (!this.checkIsTarget(optionProd, PROD_TYPE.OPTION, currRest, prevRest)) {
        super.walkOption(optionProd, currRest, prevRest);
      }
    }
    walkAtLeastOne(atLeastOneProd, currRest, prevRest) {
      if (!this.checkIsTarget(atLeastOneProd, PROD_TYPE.REPETITION_MANDATORY, currRest, prevRest)) {
        super.walkOption(atLeastOneProd, currRest, prevRest);
      }
    }
    walkAtLeastOneSep(atLeastOneSepProd, currRest, prevRest) {
      if (!this.checkIsTarget(atLeastOneSepProd, PROD_TYPE.REPETITION_MANDATORY_WITH_SEPARATOR, currRest, prevRest)) {
        super.walkOption(atLeastOneSepProd, currRest, prevRest);
      }
    }
    walkMany(manyProd, currRest, prevRest) {
      if (!this.checkIsTarget(manyProd, PROD_TYPE.REPETITION, currRest, prevRest)) {
        super.walkOption(manyProd, currRest, prevRest);
      }
    }
    walkManySep(manySepProd, currRest, prevRest) {
      if (!this.checkIsTarget(manySepProd, PROD_TYPE.REPETITION_WITH_SEPARATOR, currRest, prevRest)) {
        super.walkOption(manySepProd, currRest, prevRest);
      }
    }
  }
  class InsideDefinitionFinderVisitor extends GAstVisitor {
    constructor(targetOccurrence, targetProdType, targetRef) {
      super();
      this.targetOccurrence = targetOccurrence;
      this.targetProdType = targetProdType;
      this.targetRef = targetRef;
      this.result = [];
    }
    checkIsTarget(node, expectedProdName) {
      if (node.idx === this.targetOccurrence && this.targetProdType === expectedProdName && (this.targetRef === void 0 || node === this.targetRef)) {
        this.result = node.definition;
      }
    }
    visitOption(node) {
      this.checkIsTarget(node, PROD_TYPE.OPTION);
    }
    visitRepetition(node) {
      this.checkIsTarget(node, PROD_TYPE.REPETITION);
    }
    visitRepetitionMandatory(node) {
      this.checkIsTarget(node, PROD_TYPE.REPETITION_MANDATORY);
    }
    visitRepetitionMandatoryWithSeparator(node) {
      this.checkIsTarget(node, PROD_TYPE.REPETITION_MANDATORY_WITH_SEPARATOR);
    }
    visitRepetitionWithSeparator(node) {
      this.checkIsTarget(node, PROD_TYPE.REPETITION_WITH_SEPARATOR);
    }
    visitAlternation(node) {
      this.checkIsTarget(node, PROD_TYPE.ALTERNATION);
    }
  }
  function initializeArrayOfArrays(size) {
    const result = new Array(size);
    for (let i = 0; i < size; i++) {
      result[i] = [];
    }
    return result;
  }
  function pathToHashKeys(path) {
    let keys2 = [""];
    for (let i = 0; i < path.length; i++) {
      const tokType = path[i];
      const longerKeys = [];
      for (let j = 0; j < keys2.length; j++) {
        const currShorterKey = keys2[j];
        longerKeys.push(currShorterKey + "_" + tokType.tokenTypeIdx);
        for (let t = 0; t < tokType.categoryMatches.length; t++) {
          const categoriesKeySuffix = "_" + tokType.categoryMatches[t];
          longerKeys.push(currShorterKey + categoriesKeySuffix);
        }
      }
      keys2 = longerKeys;
    }
    return keys2;
  }
  function isUniquePrefixHash(altKnownPathsKeys, searchPathKeys, idx) {
    for (let currAltIdx = 0; currAltIdx < altKnownPathsKeys.length; currAltIdx++) {
      if (currAltIdx === idx) {
        continue;
      }
      const otherAltKnownPathsKeys = altKnownPathsKeys[currAltIdx];
      for (let searchIdx = 0; searchIdx < searchPathKeys.length; searchIdx++) {
        const searchKey = searchPathKeys[searchIdx];
        if (otherAltKnownPathsKeys[searchKey] === true) {
          return false;
        }
      }
    }
    return true;
  }
  function lookAheadSequenceFromAlternatives(altsDefs, k) {
    const partialAlts = map(altsDefs, (currAlt) => possiblePathsFrom([currAlt], 1));
    const finalResult = initializeArrayOfArrays(partialAlts.length);
    const altsHashes = map(partialAlts, (currAltPaths) => {
      const dict = {};
      forEach(currAltPaths, (item) => {
        const keys2 = pathToHashKeys(item.partialPath);
        forEach(keys2, (currKey) => {
          dict[currKey] = true;
        });
      });
      return dict;
    });
    let newData = partialAlts;
    for (let pathLength = 1; pathLength <= k; pathLength++) {
      const currDataset = newData;
      newData = initializeArrayOfArrays(currDataset.length);
      for (let altIdx = 0; altIdx < currDataset.length; altIdx++) {
        const currAltPathsAndSuffixes = currDataset[altIdx];
        for (let currPathIdx = 0; currPathIdx < currAltPathsAndSuffixes.length; currPathIdx++) {
          const currPathPrefix = currAltPathsAndSuffixes[currPathIdx].partialPath;
          const suffixDef = currAltPathsAndSuffixes[currPathIdx].suffixDef;
          const prefixKeys = pathToHashKeys(currPathPrefix);
          const isUnique = isUniquePrefixHash(altsHashes, prefixKeys, altIdx);
          if (isUnique || isEmpty(suffixDef) || currPathPrefix.length === k) {
            const currAltResult = finalResult[altIdx];
            if (containsPath(currAltResult, currPathPrefix) === false) {
              currAltResult.push(currPathPrefix);
              for (let j = 0; j < prefixKeys.length; j++) {
                const currKey = prefixKeys[j];
                altsHashes[altIdx][currKey] = true;
              }
            }
          } else {
            const newPartialPathsAndSuffixes = possiblePathsFrom(suffixDef, pathLength + 1, currPathPrefix);
            newData[altIdx] = newData[altIdx].concat(newPartialPathsAndSuffixes);
            forEach(newPartialPathsAndSuffixes, (item) => {
              const prefixKeys2 = pathToHashKeys(item.partialPath);
              forEach(prefixKeys2, (key) => {
                altsHashes[altIdx][key] = true;
              });
            });
          }
        }
      }
    }
    return finalResult;
  }
  function getLookaheadPathsForOr(occurrence, ruleGrammar, k, orProd) {
    const visitor = new InsideDefinitionFinderVisitor(occurrence, PROD_TYPE.ALTERNATION, orProd);
    ruleGrammar.accept(visitor);
    return lookAheadSequenceFromAlternatives(visitor.result, k);
  }
  function getLookaheadPathsForOptionalProd(occurrence, ruleGrammar, prodType, k) {
    const insideDefVisitor = new InsideDefinitionFinderVisitor(occurrence, prodType);
    ruleGrammar.accept(insideDefVisitor);
    const insideDef = insideDefVisitor.result;
    const afterDefWalker = new RestDefinitionFinderWalker(ruleGrammar, occurrence, prodType);
    const afterDef = afterDefWalker.startWalking();
    const insideFlat = new Alternative({ definition: insideDef });
    const afterFlat = new Alternative({ definition: afterDef });
    return lookAheadSequenceFromAlternatives([insideFlat, afterFlat], k);
  }
  function containsPath(alternative, searchPath) {
    compareOtherPath:
      for (let i = 0; i < alternative.length; i++) {
        const otherPath = alternative[i];
        if (otherPath.length !== searchPath.length) {
          continue;
        }
        for (let j = 0; j < otherPath.length; j++) {
          const searchTok = searchPath[j];
          const otherTok = otherPath[j];
          const matchingTokens = searchTok === otherTok || otherTok.categoryMatchesMap[searchTok.tokenTypeIdx] !== void 0;
          if (matchingTokens === false) {
            continue compareOtherPath;
          }
        }
        return true;
      }
    return false;
  }
  function isStrictPrefixOfPath(prefix, other) {
    return prefix.length < other.length && every(prefix, (tokType, idx) => {
      const otherTokType = other[idx];
      return tokType === otherTokType || otherTokType.categoryMatchesMap[tokType.tokenTypeIdx];
    });
  }
  function areTokenCategoriesNotUsed(lookAheadPaths) {
    return every(
      lookAheadPaths,
      (singleAltPaths) => every(singleAltPaths, (singlePath) => every(singlePath, (token) => isEmpty(token.categoryMatches)))
    );
  }
  function validateLookahead(options) {
    const lookaheadValidationErrorMessages = options.lookaheadStrategy.validate({
      rules: options.rules,
      tokenTypes: options.tokenTypes,
      grammarName: options.grammarName
    });
    return map(
      lookaheadValidationErrorMessages,
      (errorMessage) => Object.assign({ type: ParserDefinitionErrorType.CUSTOM_LOOKAHEAD_VALIDATION }, errorMessage)
    );
  }
  function validateGrammar$1(topLevels, tokenTypes, errMsgProvider, grammarName) {
    const duplicateErrors = flatMap(
      topLevels,
      (currTopLevel) => validateDuplicateProductions(currTopLevel, errMsgProvider)
    );
    const termsNamespaceConflictErrors = checkTerminalAndNoneTerminalsNameSpace(topLevels, tokenTypes, errMsgProvider);
    const tooManyAltsErrors = flatMap(topLevels, (curRule) => validateTooManyAlts(curRule, errMsgProvider));
    const duplicateRulesError = flatMap(
      topLevels,
      (curRule) => validateRuleDoesNotAlreadyExist(curRule, topLevels, grammarName, errMsgProvider)
    );
    return duplicateErrors.concat(termsNamespaceConflictErrors, tooManyAltsErrors, duplicateRulesError);
  }
  function validateDuplicateProductions(topLevelRule, errMsgProvider) {
    const collectorVisitor2 = new OccurrenceValidationCollector();
    topLevelRule.accept(collectorVisitor2);
    const allRuleProductions = collectorVisitor2.allProductions;
    const productionGroups = groupBy$1(allRuleProductions, identifyProductionForDuplicates);
    const duplicates = pickBy(productionGroups, (currGroup) => {
      return currGroup.length > 1;
    });
    const errors = map(values(duplicates), (currDuplicates) => {
      const firstProd = head(currDuplicates);
      const msg = errMsgProvider.buildDuplicateFoundError(topLevelRule, currDuplicates);
      const dslName = getProductionDslName(firstProd);
      const defError = {
        message: msg,
        type: ParserDefinitionErrorType.DUPLICATE_PRODUCTIONS,
        ruleName: topLevelRule.name,
        dslName,
        occurrence: firstProd.idx
      };
      const param = getExtraProductionArgument(firstProd);
      if (param) {
        defError.parameter = param;
      }
      return defError;
    });
    return errors;
  }
  function identifyProductionForDuplicates(prod) {
    return `${getProductionDslName(prod)}_#_${prod.idx}_#_${getExtraProductionArgument(prod)}`;
  }
  function getExtraProductionArgument(prod) {
    if (prod instanceof Terminal) {
      return prod.terminalType.name;
    } else if (prod instanceof NonTerminal) {
      return prod.nonTerminalName;
    } else {
      return "";
    }
  }
  class OccurrenceValidationCollector extends GAstVisitor {
    constructor() {
      super(...arguments);
      this.allProductions = [];
    }
    visitNonTerminal(subrule) {
      this.allProductions.push(subrule);
    }
    visitOption(option) {
      this.allProductions.push(option);
    }
    visitRepetitionWithSeparator(manySep) {
      this.allProductions.push(manySep);
    }
    visitRepetitionMandatory(atLeastOne) {
      this.allProductions.push(atLeastOne);
    }
    visitRepetitionMandatoryWithSeparator(atLeastOneSep) {
      this.allProductions.push(atLeastOneSep);
    }
    visitRepetition(many) {
      this.allProductions.push(many);
    }
    visitAlternation(or) {
      this.allProductions.push(or);
    }
    visitTerminal(terminal) {
      this.allProductions.push(terminal);
    }
  }
  function validateRuleDoesNotAlreadyExist(rule, allRules, className, errMsgProvider) {
    const errors = [];
    const occurrences = reduce(
      allRules,
      (result, curRule) => {
        if (curRule.name === rule.name) {
          return result + 1;
        }
        return result;
      },
      0
    );
    if (occurrences > 1) {
      const errMsg = errMsgProvider.buildDuplicateRuleNameError({
        topLevelRule: rule,
        grammarName: className
      });
      errors.push({
        message: errMsg,
        type: ParserDefinitionErrorType.DUPLICATE_RULE_NAME,
        ruleName: rule.name
      });
    }
    return errors;
  }
  function validateRuleIsOverridden(ruleName, definedRulesNames, className) {
    const errors = [];
    let errMsg;
    if (!includes(definedRulesNames, ruleName)) {
      errMsg = `Invalid rule override, rule: ->${ruleName}<- cannot be overridden in the grammar: ->${className}<-as it is not defined in any of the super grammars `;
      errors.push({
        message: errMsg,
        type: ParserDefinitionErrorType.INVALID_RULE_OVERRIDE,
        ruleName
      });
    }
    return errors;
  }
  function validateNoLeftRecursion(topRule, currRule, errMsgProvider, path = []) {
    const errors = [];
    const nextNonTerminals = getFirstNoneTerminal(currRule.definition);
    if (isEmpty(nextNonTerminals)) {
      return [];
    } else {
      const ruleName = topRule.name;
      const foundLeftRecursion = includes(nextNonTerminals, topRule);
      if (foundLeftRecursion) {
        errors.push({
          message: errMsgProvider.buildLeftRecursionError({
            topLevelRule: topRule,
            leftRecursionPath: path
          }),
          type: ParserDefinitionErrorType.LEFT_RECURSION,
          ruleName
        });
      }
      const validNextSteps = difference$1(nextNonTerminals, path.concat([topRule]));
      const errorsFromNextSteps = flatMap(validNextSteps, (currRefRule) => {
        const newPath = clone(path);
        newPath.push(currRefRule);
        return validateNoLeftRecursion(topRule, currRefRule, errMsgProvider, newPath);
      });
      return errors.concat(errorsFromNextSteps);
    }
  }
  function getFirstNoneTerminal(definition) {
    let result = [];
    if (isEmpty(definition)) {
      return result;
    }
    const firstProd = head(definition);
    if (firstProd instanceof NonTerminal) {
      result.push(firstProd.referencedRule);
    } else if (firstProd instanceof Alternative || firstProd instanceof Option || firstProd instanceof RepetitionMandatory || firstProd instanceof RepetitionMandatoryWithSeparator || firstProd instanceof RepetitionWithSeparator || firstProd instanceof Repetition) {
      result = result.concat(getFirstNoneTerminal(firstProd.definition));
    } else if (firstProd instanceof Alternation) {
      result = flatten(map(firstProd.definition, (currSubDef) => getFirstNoneTerminal(currSubDef.definition)));
    } else if (firstProd instanceof Terminal)
      ;
    else {
      throw Error("non exhaustive match");
    }
    const isFirstOptional = isOptionalProd(firstProd);
    const hasMore = definition.length > 1;
    if (isFirstOptional && hasMore) {
      const rest = drop(definition);
      return result.concat(getFirstNoneTerminal(rest));
    } else {
      return result;
    }
  }
  class OrCollector extends GAstVisitor {
    constructor() {
      super(...arguments);
      this.alternations = [];
    }
    visitAlternation(node) {
      this.alternations.push(node);
    }
  }
  function validateEmptyOrAlternative(topLevelRule, errMsgProvider) {
    const orCollector = new OrCollector();
    topLevelRule.accept(orCollector);
    const ors = orCollector.alternations;
    const errors = flatMap(ors, (currOr) => {
      const exceptLast = dropRight(currOr.definition);
      return flatMap(exceptLast, (currAlternative, currAltIdx) => {
        const possibleFirstInAlt = nextPossibleTokensAfter([currAlternative], [], tokenStructuredMatcher, 1);
        if (isEmpty(possibleFirstInAlt)) {
          return [
            {
              message: errMsgProvider.buildEmptyAlternationError({
                topLevelRule,
                alternation: currOr,
                emptyChoiceIdx: currAltIdx
              }),
              type: ParserDefinitionErrorType.NONE_LAST_EMPTY_ALT,
              ruleName: topLevelRule.name,
              occurrence: currOr.idx,
              alternative: currAltIdx + 1
            }
          ];
        } else {
          return [];
        }
      });
    });
    return errors;
  }
  function validateAmbiguousAlternationAlternatives(topLevelRule, globalMaxLookahead, errMsgProvider) {
    const orCollector = new OrCollector();
    topLevelRule.accept(orCollector);
    let ors = orCollector.alternations;
    ors = reject(ors, (currOr) => currOr.ignoreAmbiguities === true);
    const errors = flatMap(ors, (currOr) => {
      const currOccurrence = currOr.idx;
      const actualMaxLookahead = currOr.maxLookahead || globalMaxLookahead;
      const alternatives = getLookaheadPathsForOr(currOccurrence, topLevelRule, actualMaxLookahead, currOr);
      const altsAmbiguityErrors = checkAlternativesAmbiguities(alternatives, currOr, topLevelRule, errMsgProvider);
      const altsPrefixAmbiguityErrors = checkPrefixAlternativesAmbiguities(
        alternatives,
        currOr,
        topLevelRule,
        errMsgProvider
      );
      return altsAmbiguityErrors.concat(altsPrefixAmbiguityErrors);
    });
    return errors;
  }
  class RepetitionCollector extends GAstVisitor {
    constructor() {
      super(...arguments);
      this.allProductions = [];
    }
    visitRepetitionWithSeparator(manySep) {
      this.allProductions.push(manySep);
    }
    visitRepetitionMandatory(atLeastOne) {
      this.allProductions.push(atLeastOne);
    }
    visitRepetitionMandatoryWithSeparator(atLeastOneSep) {
      this.allProductions.push(atLeastOneSep);
    }
    visitRepetition(many) {
      this.allProductions.push(many);
    }
  }
  function validateTooManyAlts(topLevelRule, errMsgProvider) {
    const orCollector = new OrCollector();
    topLevelRule.accept(orCollector);
    const ors = orCollector.alternations;
    const errors = flatMap(ors, (currOr) => {
      if (currOr.definition.length > 255) {
        return [
          {
            message: errMsgProvider.buildTooManyAlternativesError({
              topLevelRule,
              alternation: currOr
            }),
            type: ParserDefinitionErrorType.TOO_MANY_ALTS,
            ruleName: topLevelRule.name,
            occurrence: currOr.idx
          }
        ];
      } else {
        return [];
      }
    });
    return errors;
  }
  function validateSomeNonEmptyLookaheadPath(topLevelRules, maxLookahead, errMsgProvider) {
    const errors = [];
    forEach(topLevelRules, (currTopRule) => {
      const collectorVisitor2 = new RepetitionCollector();
      currTopRule.accept(collectorVisitor2);
      const allRuleProductions = collectorVisitor2.allProductions;
      forEach(allRuleProductions, (currProd) => {
        const prodType = getProdType(currProd);
        const actualMaxLookahead = currProd.maxLookahead || maxLookahead;
        const currOccurrence = currProd.idx;
        const paths = getLookaheadPathsForOptionalProd(currOccurrence, currTopRule, prodType, actualMaxLookahead);
        const pathsInsideProduction = paths[0];
        if (isEmpty(flatten(pathsInsideProduction))) {
          const errMsg = errMsgProvider.buildEmptyRepetitionError({
            topLevelRule: currTopRule,
            repetition: currProd
          });
          errors.push({
            message: errMsg,
            type: ParserDefinitionErrorType.NO_NON_EMPTY_LOOKAHEAD,
            ruleName: currTopRule.name
          });
        }
      });
    });
    return errors;
  }
  function checkAlternativesAmbiguities(alternatives, alternation, rule, errMsgProvider) {
    const foundAmbiguousPaths = [];
    const identicalAmbiguities = reduce(
      alternatives,
      (result, currAlt, currAltIdx) => {
        if (alternation.definition[currAltIdx].ignoreAmbiguities === true) {
          return result;
        }
        forEach(currAlt, (currPath) => {
          const altsCurrPathAppearsIn = [currAltIdx];
          forEach(alternatives, (currOtherAlt, currOtherAltIdx) => {
            if (currAltIdx !== currOtherAltIdx && containsPath(currOtherAlt, currPath) && // ignore (skip) ambiguities with this "other" alternative
            alternation.definition[currOtherAltIdx].ignoreAmbiguities !== true) {
              altsCurrPathAppearsIn.push(currOtherAltIdx);
            }
          });
          if (altsCurrPathAppearsIn.length > 1 && !containsPath(foundAmbiguousPaths, currPath)) {
            foundAmbiguousPaths.push(currPath);
            result.push({
              alts: altsCurrPathAppearsIn,
              path: currPath
            });
          }
        });
        return result;
      },
      []
    );
    const currErrors = map(identicalAmbiguities, (currAmbDescriptor) => {
      const ambgIndices = map(currAmbDescriptor.alts, (currAltIdx) => currAltIdx + 1);
      const currMessage = errMsgProvider.buildAlternationAmbiguityError({
        topLevelRule: rule,
        alternation,
        ambiguityIndices: ambgIndices,
        prefixPath: currAmbDescriptor.path
      });
      return {
        message: currMessage,
        type: ParserDefinitionErrorType.AMBIGUOUS_ALTS,
        ruleName: rule.name,
        occurrence: alternation.idx,
        alternatives: currAmbDescriptor.alts
      };
    });
    return currErrors;
  }
  function checkPrefixAlternativesAmbiguities(alternatives, alternation, rule, errMsgProvider) {
    const pathsAndIndices = reduce(
      alternatives,
      (result, currAlt, idx) => {
        const currPathsAndIdx = map(currAlt, (currPath) => {
          return { idx, path: currPath };
        });
        return result.concat(currPathsAndIdx);
      },
      []
    );
    const errors = compact(
      flatMap(pathsAndIndices, (currPathAndIdx) => {
        const alternativeGast = alternation.definition[currPathAndIdx.idx];
        if (alternativeGast.ignoreAmbiguities === true) {
          return [];
        }
        const targetIdx = currPathAndIdx.idx;
        const targetPath = currPathAndIdx.path;
        const prefixAmbiguitiesPathsAndIndices = filter(pathsAndIndices, (searchPathAndIdx) => {
          return (
            // ignore (skip) ambiguities with this "other" alternative
            alternation.definition[searchPathAndIdx.idx].ignoreAmbiguities !== true && searchPathAndIdx.idx < targetIdx && // checking for strict prefix because identical lookaheads
            // will be be detected using a different validation.
            isStrictPrefixOfPath(searchPathAndIdx.path, targetPath)
          );
        });
        const currPathPrefixErrors = map(prefixAmbiguitiesPathsAndIndices, (currAmbPathAndIdx) => {
          const ambgIndices = [currAmbPathAndIdx.idx + 1, targetIdx + 1];
          const occurrence = alternation.idx === 0 ? "" : alternation.idx;
          const message = errMsgProvider.buildAlternationPrefixAmbiguityError({
            topLevelRule: rule,
            alternation,
            ambiguityIndices: ambgIndices,
            prefixPath: currAmbPathAndIdx.path
          });
          return {
            message,
            type: ParserDefinitionErrorType.AMBIGUOUS_PREFIX_ALTS,
            ruleName: rule.name,
            occurrence,
            alternatives: ambgIndices
          };
        });
        return currPathPrefixErrors;
      })
    );
    return errors;
  }
  function checkTerminalAndNoneTerminalsNameSpace(topLevels, tokenTypes, errMsgProvider) {
    const errors = [];
    const tokenNames = map(tokenTypes, (currToken) => currToken.name);
    forEach(topLevels, (currRule) => {
      const currRuleName = currRule.name;
      if (includes(tokenNames, currRuleName)) {
        const errMsg = errMsgProvider.buildNamespaceConflictError(currRule);
        errors.push({
          message: errMsg,
          type: ParserDefinitionErrorType.CONFLICT_TOKENS_RULES_NAMESPACE,
          ruleName: currRuleName
        });
      }
    });
    return errors;
  }
  function resolveGrammar(options) {
    const actualOptions = defaults$1(options, {
      errMsgProvider: defaultGrammarResolverErrorProvider
    });
    const topRulesTable = {};
    forEach(options.rules, (rule) => {
      topRulesTable[rule.name] = rule;
    });
    return resolveGrammar$1(topRulesTable, actualOptions.errMsgProvider);
  }
  function validateGrammar(options) {
    options = defaults$1(options, {
      errMsgProvider: defaultGrammarValidatorErrorProvider
    });
    return validateGrammar$1(options.rules, options.tokenTypes, options.errMsgProvider, options.grammarName);
  }
  const MISMATCHED_TOKEN_EXCEPTION = "MismatchedTokenException";
  const NO_VIABLE_ALT_EXCEPTION = "NoViableAltException";
  const EARLY_EXIT_EXCEPTION = "EarlyExitException";
  const NOT_ALL_INPUT_PARSED_EXCEPTION = "NotAllInputParsedException";
  const RECOGNITION_EXCEPTION_NAMES = [
    MISMATCHED_TOKEN_EXCEPTION,
    NO_VIABLE_ALT_EXCEPTION,
    EARLY_EXIT_EXCEPTION,
    NOT_ALL_INPUT_PARSED_EXCEPTION
  ];
  Object.freeze(RECOGNITION_EXCEPTION_NAMES);
  function isRecognitionException(error) {
    return includes(RECOGNITION_EXCEPTION_NAMES, error.name);
  }
  class RecognitionException extends Error {
    constructor(message, token) {
      super(message);
      this.token = token;
      this.resyncedTokens = [];
      Object.setPrototypeOf(this, new.target.prototype);
      if (Error.captureStackTrace) {
        Error.captureStackTrace(this, this.constructor);
      }
    }
  }
  class MismatchedTokenException extends RecognitionException {
    constructor(message, token, previousToken) {
      super(message, token);
      this.previousToken = previousToken;
      this.name = MISMATCHED_TOKEN_EXCEPTION;
    }
  }
  class NoViableAltException extends RecognitionException {
    constructor(message, token, previousToken) {
      super(message, token);
      this.previousToken = previousToken;
      this.name = NO_VIABLE_ALT_EXCEPTION;
    }
  }
  class NotAllInputParsedException extends RecognitionException {
    constructor(message, token) {
      super(message, token);
      this.name = NOT_ALL_INPUT_PARSED_EXCEPTION;
    }
  }
  class EarlyExitException extends RecognitionException {
    constructor(message, token, previousToken) {
      super(message, token);
      this.previousToken = previousToken;
      this.name = EARLY_EXIT_EXCEPTION;
    }
  }
  const EOF_FOLLOW_KEY = {};
  const IN_RULE_RECOVERY_EXCEPTION = "InRuleRecoveryException";
  class InRuleRecoveryException extends Error {
    constructor(message) {
      super(message);
      this.name = IN_RULE_RECOVERY_EXCEPTION;
    }
  }
  class Recoverable {
    initRecoverable(config) {
      this.firstAfterRepMap = {};
      this.resyncFollows = {};
      this.recoveryEnabled = has(config, "recoveryEnabled") ? config.recoveryEnabled : DEFAULT_PARSER_CONFIG.recoveryEnabled;
      if (this.recoveryEnabled) {
        this.attemptInRepetitionRecovery = attemptInRepetitionRecovery;
      }
    }
    getTokenToInsert(tokType) {
      const tokToInsert = createTokenInstance(tokType, "", NaN, NaN, NaN, NaN, NaN, NaN);
      tokToInsert.isInsertedInRecovery = true;
      return tokToInsert;
    }
    canTokenTypeBeInsertedInRecovery(tokType) {
      return true;
    }
    canTokenTypeBeDeletedInRecovery(tokType) {
      return true;
    }
    tryInRepetitionRecovery(grammarRule, grammarRuleArgs, lookAheadFunc, expectedTokType) {
      const reSyncTokType = this.findReSyncTokenType();
      const savedLexerState = this.exportLexerState();
      const resyncedTokens = [];
      let passedResyncPoint = false;
      const nextTokenWithoutResync = this.LA(1);
      let currToken = this.LA(1);
      const generateErrorMessage = () => {
        const previousToken = this.LA(0);
        const msg = this.errorMessageProvider.buildMismatchTokenMessage({
          expected: expectedTokType,
          actual: nextTokenWithoutResync,
          previous: previousToken,
          ruleName: this.getCurrRuleFullName()
        });
        const error = new MismatchedTokenException(msg, nextTokenWithoutResync, this.LA(0));
        error.resyncedTokens = dropRight(resyncedTokens);
        this.SAVE_ERROR(error);
      };
      while (!passedResyncPoint) {
        if (this.tokenMatcher(currToken, expectedTokType)) {
          generateErrorMessage();
          return;
        } else if (lookAheadFunc.call(this)) {
          generateErrorMessage();
          grammarRule.apply(this, grammarRuleArgs);
          return;
        } else if (this.tokenMatcher(currToken, reSyncTokType)) {
          passedResyncPoint = true;
        } else {
          currToken = this.SKIP_TOKEN();
          this.addToResyncTokens(currToken, resyncedTokens);
        }
      }
      this.importLexerState(savedLexerState);
    }
    shouldInRepetitionRecoveryBeTried(expectTokAfterLastMatch, nextTokIdx, notStuck) {
      if (notStuck === false) {
        return false;
      }
      if (this.tokenMatcher(this.LA(1), expectTokAfterLastMatch)) {
        return false;
      }
      if (this.isBackTracking()) {
        return false;
      }
      if (this.canPerformInRuleRecovery(
        expectTokAfterLastMatch,
        this.getFollowsForInRuleRecovery(expectTokAfterLastMatch, nextTokIdx)
      )) {
        return false;
      }
      return true;
    }
    // Error Recovery functionality
    getFollowsForInRuleRecovery(tokType, tokIdxInRule) {
      const grammarPath = this.getCurrentGrammarPath(tokType, tokIdxInRule);
      const follows = this.getNextPossibleTokenTypes(grammarPath);
      return follows;
    }
    tryInRuleRecovery(expectedTokType, follows) {
      if (this.canRecoverWithSingleTokenInsertion(expectedTokType, follows)) {
        const tokToInsert = this.getTokenToInsert(expectedTokType);
        return tokToInsert;
      }
      if (this.canRecoverWithSingleTokenDeletion(expectedTokType)) {
        const nextTok = this.SKIP_TOKEN();
        this.consumeToken();
        return nextTok;
      }
      throw new InRuleRecoveryException("sad sad panda");
    }
    canPerformInRuleRecovery(expectedToken, follows) {
      return this.canRecoverWithSingleTokenInsertion(expectedToken, follows) || this.canRecoverWithSingleTokenDeletion(expectedToken);
    }
    canRecoverWithSingleTokenInsertion(expectedTokType, follows) {
      if (!this.canTokenTypeBeInsertedInRecovery(expectedTokType)) {
        return false;
      }
      if (isEmpty(follows)) {
        return false;
      }
      const mismatchedTok = this.LA(1);
      const isMisMatchedTokInFollows = find$1(follows, (possibleFollowsTokType) => {
        return this.tokenMatcher(mismatchedTok, possibleFollowsTokType);
      }) !== void 0;
      return isMisMatchedTokInFollows;
    }
    canRecoverWithSingleTokenDeletion(expectedTokType) {
      if (!this.canTokenTypeBeDeletedInRecovery(expectedTokType)) {
        return false;
      }
      const isNextTokenWhatIsExpected = this.tokenMatcher(this.LA(2), expectedTokType);
      return isNextTokenWhatIsExpected;
    }
    isInCurrentRuleReSyncSet(tokenTypeIdx) {
      const followKey = this.getCurrFollowKey();
      const currentRuleReSyncSet = this.getFollowSetFromFollowKey(followKey);
      return includes(currentRuleReSyncSet, tokenTypeIdx);
    }
    findReSyncTokenType() {
      const allPossibleReSyncTokTypes = this.flattenFollowSet();
      let nextToken = this.LA(1);
      let k = 2;
      while (true) {
        const foundMatch = find$1(allPossibleReSyncTokTypes, (resyncTokType) => {
          const canMatch = tokenMatcher(nextToken, resyncTokType);
          return canMatch;
        });
        if (foundMatch !== void 0) {
          return foundMatch;
        }
        nextToken = this.LA(k);
        k++;
      }
    }
    getCurrFollowKey() {
      if (this.RULE_STACK.length === 1) {
        return EOF_FOLLOW_KEY;
      }
      const currRuleShortName = this.getLastExplicitRuleShortName();
      const currRuleIdx = this.getLastExplicitRuleOccurrenceIndex();
      const prevRuleShortName = this.getPreviousExplicitRuleShortName();
      return {
        ruleName: this.shortRuleNameToFullName(currRuleShortName),
        idxInCallingRule: currRuleIdx,
        inRule: this.shortRuleNameToFullName(prevRuleShortName)
      };
    }
    buildFullFollowKeyStack() {
      const explicitRuleStack = this.RULE_STACK;
      const explicitOccurrenceStack = this.RULE_OCCURRENCE_STACK;
      return map(explicitRuleStack, (ruleName, idx) => {
        if (idx === 0) {
          return EOF_FOLLOW_KEY;
        }
        return {
          ruleName: this.shortRuleNameToFullName(ruleName),
          idxInCallingRule: explicitOccurrenceStack[idx],
          inRule: this.shortRuleNameToFullName(explicitRuleStack[idx - 1])
        };
      });
    }
    flattenFollowSet() {
      const followStack = map(this.buildFullFollowKeyStack(), (currKey) => {
        return this.getFollowSetFromFollowKey(currKey);
      });
      return flatten(followStack);
    }
    getFollowSetFromFollowKey(followKey) {
      if (followKey === EOF_FOLLOW_KEY) {
        return [EOF];
      }
      const followName = followKey.ruleName + followKey.idxInCallingRule + IN + followKey.inRule;
      return this.resyncFollows[followName];
    }
    // It does not make any sense to include a virtual EOF token in the list of resynced tokens
    // as EOF does not really exist and thus does not contain any useful information (line/column numbers)
    addToResyncTokens(token, resyncTokens) {
      if (!this.tokenMatcher(token, EOF)) {
        resyncTokens.push(token);
      }
      return resyncTokens;
    }
    reSyncTo(tokType) {
      const resyncedTokens = [];
      let nextTok = this.LA(1);
      while (this.tokenMatcher(nextTok, tokType) === false) {
        nextTok = this.SKIP_TOKEN();
        this.addToResyncTokens(nextTok, resyncedTokens);
      }
      return dropRight(resyncedTokens);
    }
    attemptInRepetitionRecovery(prodFunc, args, lookaheadFunc, dslMethodIdx, prodOccurrence, nextToksWalker, notStuck) {
    }
    getCurrentGrammarPath(tokType, tokIdxInRule) {
      const pathRuleStack = this.getHumanReadableRuleStack();
      const pathOccurrenceStack = clone(this.RULE_OCCURRENCE_STACK);
      const grammarPath = {
        ruleStack: pathRuleStack,
        occurrenceStack: pathOccurrenceStack,
        lastTok: tokType,
        lastTokOccurrence: tokIdxInRule
      };
      return grammarPath;
    }
    getHumanReadableRuleStack() {
      return map(this.RULE_STACK, (currShortName) => this.shortRuleNameToFullName(currShortName));
    }
  }
  function attemptInRepetitionRecovery(prodFunc, args, lookaheadFunc, dslMethodIdx, prodOccurrence, nextToksWalker, notStuck) {
    const key = this.getKeyForAutomaticLookahead(dslMethodIdx, prodOccurrence);
    let firstAfterRepInfo = this.firstAfterRepMap[key];
    if (firstAfterRepInfo === void 0) {
      const currRuleName = this.getCurrRuleFullName();
      const ruleGrammar = this.getGAstProductions()[currRuleName];
      const walker = new nextToksWalker(ruleGrammar, prodOccurrence);
      firstAfterRepInfo = walker.startWalking();
      this.firstAfterRepMap[key] = firstAfterRepInfo;
    }
    let expectTokAfterLastMatch = firstAfterRepInfo.token;
    let nextTokIdx = firstAfterRepInfo.occurrence;
    const isEndOfRule = firstAfterRepInfo.isEndOfRule;
    if (this.RULE_STACK.length === 1 && isEndOfRule && expectTokAfterLastMatch === void 0) {
      expectTokAfterLastMatch = EOF;
      nextTokIdx = 1;
    }
    if (expectTokAfterLastMatch === void 0 || nextTokIdx === void 0) {
      return;
    }
    if (this.shouldInRepetitionRecoveryBeTried(expectTokAfterLastMatch, nextTokIdx, notStuck)) {
      this.tryInRepetitionRecovery(prodFunc, args, lookaheadFunc, expectTokAfterLastMatch);
    }
  }
  const BITS_FOR_METHOD_TYPE = 4;
  const BITS_FOR_OCCURRENCE_IDX = 8;
  const OR_IDX = 1 << BITS_FOR_OCCURRENCE_IDX;
  const OPTION_IDX = 2 << BITS_FOR_OCCURRENCE_IDX;
  const MANY_IDX = 3 << BITS_FOR_OCCURRENCE_IDX;
  const AT_LEAST_ONE_IDX = 4 << BITS_FOR_OCCURRENCE_IDX;
  const MANY_SEP_IDX = 5 << BITS_FOR_OCCURRENCE_IDX;
  const AT_LEAST_ONE_SEP_IDX = 6 << BITS_FOR_OCCURRENCE_IDX;
  function getKeyForAutomaticLookahead(ruleIdx, dslMethodIdx, occurrence) {
    return occurrence | dslMethodIdx | ruleIdx;
  }
  class LLkLookaheadStrategy {
    constructor(options) {
      var _a;
      this.maxLookahead = (_a = options === null || options === void 0 ? void 0 : options.maxLookahead) !== null && _a !== void 0 ? _a : DEFAULT_PARSER_CONFIG.maxLookahead;
    }
    validate(options) {
      const leftRecursionErrors = this.validateNoLeftRecursion(options.rules);
      if (isEmpty(leftRecursionErrors)) {
        const emptyAltErrors = this.validateEmptyOrAlternatives(options.rules);
        const ambiguousAltsErrors = this.validateAmbiguousAlternationAlternatives(options.rules, this.maxLookahead);
        const emptyRepetitionErrors = this.validateSomeNonEmptyLookaheadPath(options.rules, this.maxLookahead);
        const allErrors = [...leftRecursionErrors, ...emptyAltErrors, ...ambiguousAltsErrors, ...emptyRepetitionErrors];
        return allErrors;
      }
      return leftRecursionErrors;
    }
    validateNoLeftRecursion(rules) {
      return flatMap(
        rules,
        (currTopRule) => validateNoLeftRecursion(currTopRule, currTopRule, defaultGrammarValidatorErrorProvider)
      );
    }
    validateEmptyOrAlternatives(rules) {
      return flatMap(
        rules,
        (currTopRule) => validateEmptyOrAlternative(currTopRule, defaultGrammarValidatorErrorProvider)
      );
    }
    validateAmbiguousAlternationAlternatives(rules, maxLookahead) {
      return flatMap(
        rules,
        (currTopRule) => validateAmbiguousAlternationAlternatives(currTopRule, maxLookahead, defaultGrammarValidatorErrorProvider)
      );
    }
    validateSomeNonEmptyLookaheadPath(rules, maxLookahead) {
      return validateSomeNonEmptyLookaheadPath(rules, maxLookahead, defaultGrammarValidatorErrorProvider);
    }
    buildLookaheadForAlternation(options) {
      return buildLookaheadFuncForOr(
        options.prodOccurrence,
        options.rule,
        options.maxLookahead,
        options.hasPredicates,
        options.dynamicTokensEnabled,
        buildAlternativesLookAheadFunc
      );
    }
    buildLookaheadForOptional(options) {
      return buildLookaheadFuncForOptionalProd(
        options.prodOccurrence,
        options.rule,
        options.maxLookahead,
        options.dynamicTokensEnabled,
        getProdType(options.prodType),
        buildSingleAlternativeLookaheadFunction
      );
    }
  }
  class LooksAhead {
    initLooksAhead(config) {
      this.dynamicTokensEnabled = has(config, "dynamicTokensEnabled") ? config.dynamicTokensEnabled : DEFAULT_PARSER_CONFIG.dynamicTokensEnabled;
      this.maxLookahead = has(config, "maxLookahead") ? config.maxLookahead : DEFAULT_PARSER_CONFIG.maxLookahead;
      this.lookaheadStrategy = has(config, "lookaheadStrategy") ? config.lookaheadStrategy : new LLkLookaheadStrategy({ maxLookahead: this.maxLookahead });
      this.lookAheadFuncsCache = /* @__PURE__ */ new Map();
    }
    preComputeLookaheadFunctions(rules) {
      forEach(rules, (currRule) => {
        this.TRACE_INIT(`${currRule.name} Rule Lookahead`, () => {
          const {
            alternation,
            repetition,
            option,
            repetitionMandatory,
            repetitionMandatoryWithSeparator,
            repetitionWithSeparator
          } = collectMethods(currRule);
          forEach(alternation, (currProd) => {
            const prodIdx = currProd.idx === 0 ? "" : currProd.idx;
            this.TRACE_INIT(`${getProductionDslName(currProd)}${prodIdx}`, () => {
              const laFunc = this.lookaheadStrategy.buildLookaheadForAlternation({
                prodOccurrence: currProd.idx,
                rule: currRule,
                maxLookahead: currProd.maxLookahead || this.maxLookahead,
                hasPredicates: currProd.hasPredicates,
                dynamicTokensEnabled: this.dynamicTokensEnabled
              });
              const key = getKeyForAutomaticLookahead(this.fullRuleNameToShort[currRule.name], OR_IDX, currProd.idx);
              this.setLaFuncCache(key, laFunc);
            });
          });
          forEach(repetition, (currProd) => {
            this.computeLookaheadFunc(
              currRule,
              currProd.idx,
              MANY_IDX,
              "Repetition",
              currProd.maxLookahead,
              getProductionDslName(currProd)
            );
          });
          forEach(option, (currProd) => {
            this.computeLookaheadFunc(
              currRule,
              currProd.idx,
              OPTION_IDX,
              "Option",
              currProd.maxLookahead,
              getProductionDslName(currProd)
            );
          });
          forEach(repetitionMandatory, (currProd) => {
            this.computeLookaheadFunc(
              currRule,
              currProd.idx,
              AT_LEAST_ONE_IDX,
              "RepetitionMandatory",
              currProd.maxLookahead,
              getProductionDslName(currProd)
            );
          });
          forEach(repetitionMandatoryWithSeparator, (currProd) => {
            this.computeLookaheadFunc(
              currRule,
              currProd.idx,
              AT_LEAST_ONE_SEP_IDX,
              "RepetitionMandatoryWithSeparator",
              currProd.maxLookahead,
              getProductionDslName(currProd)
            );
          });
          forEach(repetitionWithSeparator, (currProd) => {
            this.computeLookaheadFunc(
              currRule,
              currProd.idx,
              MANY_SEP_IDX,
              "RepetitionWithSeparator",
              currProd.maxLookahead,
              getProductionDslName(currProd)
            );
          });
        });
      });
    }
    computeLookaheadFunc(rule, prodOccurrence, prodKey, prodType, prodMaxLookahead, dslMethodName) {
      this.TRACE_INIT(`${dslMethodName}${prodOccurrence === 0 ? "" : prodOccurrence}`, () => {
        const laFunc = this.lookaheadStrategy.buildLookaheadForOptional({
          prodOccurrence,
          rule,
          maxLookahead: prodMaxLookahead || this.maxLookahead,
          dynamicTokensEnabled: this.dynamicTokensEnabled,
          prodType
        });
        const key = getKeyForAutomaticLookahead(this.fullRuleNameToShort[rule.name], prodKey, prodOccurrence);
        this.setLaFuncCache(key, laFunc);
      });
    }
    // this actually returns a number, but it is always used as a string (object prop key)
    getKeyForAutomaticLookahead(dslMethodIdx, occurrence) {
      const currRuleShortName = this.getLastExplicitRuleShortName();
      return getKeyForAutomaticLookahead(currRuleShortName, dslMethodIdx, occurrence);
    }
    getLaFuncFromCache(key) {
      return this.lookAheadFuncsCache.get(key);
    }
    /* istanbul ignore next */
    setLaFuncCache(key, value) {
      this.lookAheadFuncsCache.set(key, value);
    }
  }
  class DslMethodsCollectorVisitor extends GAstVisitor {
    constructor() {
      super(...arguments);
      this.dslMethods = {
        option: [],
        alternation: [],
        repetition: [],
        repetitionWithSeparator: [],
        repetitionMandatory: [],
        repetitionMandatoryWithSeparator: []
      };
    }
    reset() {
      this.dslMethods = {
        option: [],
        alternation: [],
        repetition: [],
        repetitionWithSeparator: [],
        repetitionMandatory: [],
        repetitionMandatoryWithSeparator: []
      };
    }
    visitOption(option) {
      this.dslMethods.option.push(option);
    }
    visitRepetitionWithSeparator(manySep) {
      this.dslMethods.repetitionWithSeparator.push(manySep);
    }
    visitRepetitionMandatory(atLeastOne) {
      this.dslMethods.repetitionMandatory.push(atLeastOne);
    }
    visitRepetitionMandatoryWithSeparator(atLeastOneSep) {
      this.dslMethods.repetitionMandatoryWithSeparator.push(atLeastOneSep);
    }
    visitRepetition(many) {
      this.dslMethods.repetition.push(many);
    }
    visitAlternation(or) {
      this.dslMethods.alternation.push(or);
    }
  }
  const collectorVisitor = new DslMethodsCollectorVisitor();
  function collectMethods(rule) {
    collectorVisitor.reset();
    rule.accept(collectorVisitor);
    const dslMethods = collectorVisitor.dslMethods;
    collectorVisitor.reset();
    return dslMethods;
  }
  function setNodeLocationOnlyOffset(currNodeLocation, newLocationInfo) {
    if (isNaN(currNodeLocation.startOffset) === true) {
      currNodeLocation.startOffset = newLocationInfo.startOffset;
      currNodeLocation.endOffset = newLocationInfo.endOffset;
    } else if (currNodeLocation.endOffset < newLocationInfo.endOffset === true) {
      currNodeLocation.endOffset = newLocationInfo.endOffset;
    }
  }
  function setNodeLocationFull(currNodeLocation, newLocationInfo) {
    if (isNaN(currNodeLocation.startOffset) === true) {
      currNodeLocation.startOffset = newLocationInfo.startOffset;
      currNodeLocation.startColumn = newLocationInfo.startColumn;
      currNodeLocation.startLine = newLocationInfo.startLine;
      currNodeLocation.endOffset = newLocationInfo.endOffset;
      currNodeLocation.endColumn = newLocationInfo.endColumn;
      currNodeLocation.endLine = newLocationInfo.endLine;
    } else if (currNodeLocation.endOffset < newLocationInfo.endOffset === true) {
      currNodeLocation.endOffset = newLocationInfo.endOffset;
      currNodeLocation.endColumn = newLocationInfo.endColumn;
      currNodeLocation.endLine = newLocationInfo.endLine;
    }
  }
  function addTerminalToCst(node, token, tokenTypeName) {
    if (node.children[tokenTypeName] === void 0) {
      node.children[tokenTypeName] = [token];
    } else {
      node.children[tokenTypeName].push(token);
    }
  }
  function addNoneTerminalToCst(node, ruleName, ruleResult) {
    if (node.children[ruleName] === void 0) {
      node.children[ruleName] = [ruleResult];
    } else {
      node.children[ruleName].push(ruleResult);
    }
  }
  const NAME = "name";
  function defineNameProp(obj, nameValue) {
    Object.defineProperty(obj, NAME, {
      enumerable: false,
      configurable: true,
      writable: false,
      value: nameValue
    });
  }
  function defaultVisit(ctx, param) {
    const childrenNames = keys(ctx);
    const childrenNamesLength = childrenNames.length;
    for (let i = 0; i < childrenNamesLength; i++) {
      const currChildName = childrenNames[i];
      const currChildArray = ctx[currChildName];
      const currChildArrayLength = currChildArray.length;
      for (let j = 0; j < currChildArrayLength; j++) {
        const currChild = currChildArray[j];
        if (currChild.tokenTypeIdx === void 0) {
          this[currChild.name](currChild.children, param);
        }
      }
    }
  }
  function createBaseSemanticVisitorConstructor(grammarName, ruleNames) {
    const derivedConstructor = function() {
    };
    defineNameProp(derivedConstructor, grammarName + "BaseSemantics");
    const semanticProto = {
      visit: function(cstNode, param) {
        if (isArray$1(cstNode)) {
          cstNode = cstNode[0];
        }
        if (isUndefined(cstNode)) {
          return void 0;
        }
        return this[cstNode.name](cstNode.children, param);
      },
      validateVisitor: function() {
        const semanticDefinitionErrors = validateVisitor(this, ruleNames);
        if (!isEmpty(semanticDefinitionErrors)) {
          const errorMessages = map(semanticDefinitionErrors, (currDefError) => currDefError.msg);
          throw Error(
            `Errors Detected in CST Visitor <${this.constructor.name}>:
	${errorMessages.join("\n\n").replace(/\n/g, "\n	")}`
          );
        }
      }
    };
    derivedConstructor.prototype = semanticProto;
    derivedConstructor.prototype.constructor = derivedConstructor;
    derivedConstructor._RULE_NAMES = ruleNames;
    return derivedConstructor;
  }
  function createBaseVisitorConstructorWithDefaults(grammarName, ruleNames, baseConstructor) {
    const derivedConstructor = function() {
    };
    defineNameProp(derivedConstructor, grammarName + "BaseSemanticsWithDefaults");
    const withDefaultsProto = Object.create(baseConstructor.prototype);
    forEach(ruleNames, (ruleName) => {
      withDefaultsProto[ruleName] = defaultVisit;
    });
    derivedConstructor.prototype = withDefaultsProto;
    derivedConstructor.prototype.constructor = derivedConstructor;
    return derivedConstructor;
  }
  var CstVisitorDefinitionError;
  (function(CstVisitorDefinitionError2) {
    CstVisitorDefinitionError2[CstVisitorDefinitionError2["REDUNDANT_METHOD"] = 0] = "REDUNDANT_METHOD";
    CstVisitorDefinitionError2[CstVisitorDefinitionError2["MISSING_METHOD"] = 1] = "MISSING_METHOD";
  })(CstVisitorDefinitionError || (CstVisitorDefinitionError = {}));
  function validateVisitor(visitorInstance, ruleNames) {
    const missingErrors = validateMissingCstMethods(visitorInstance, ruleNames);
    return missingErrors;
  }
  function validateMissingCstMethods(visitorInstance, ruleNames) {
    const missingRuleNames = filter(ruleNames, (currRuleName) => {
      return isFunction(visitorInstance[currRuleName]) === false;
    });
    const errors = map(missingRuleNames, (currRuleName) => {
      return {
        msg: `Missing visitor method: <${currRuleName}> on ${visitorInstance.constructor.name} CST Visitor.`,
        type: CstVisitorDefinitionError.MISSING_METHOD,
        methodName: currRuleName
      };
    });
    return compact(errors);
  }
  class TreeBuilder {
    initTreeBuilder(config) {
      this.CST_STACK = [];
      this.outputCst = config.outputCst;
      this.nodeLocationTracking = has(config, "nodeLocationTracking") ? config.nodeLocationTracking : DEFAULT_PARSER_CONFIG.nodeLocationTracking;
      if (!this.outputCst) {
        this.cstInvocationStateUpdate = noop;
        this.cstFinallyStateUpdate = noop;
        this.cstPostTerminal = noop;
        this.cstPostNonTerminal = noop;
        this.cstPostRule = noop;
      } else {
        if (/full/i.test(this.nodeLocationTracking)) {
          if (this.recoveryEnabled) {
            this.setNodeLocationFromToken = setNodeLocationFull;
            this.setNodeLocationFromNode = setNodeLocationFull;
            this.cstPostRule = noop;
            this.setInitialNodeLocation = this.setInitialNodeLocationFullRecovery;
          } else {
            this.setNodeLocationFromToken = noop;
            this.setNodeLocationFromNode = noop;
            this.cstPostRule = this.cstPostRuleFull;
            this.setInitialNodeLocation = this.setInitialNodeLocationFullRegular;
          }
        } else if (/onlyOffset/i.test(this.nodeLocationTracking)) {
          if (this.recoveryEnabled) {
            this.setNodeLocationFromToken = setNodeLocationOnlyOffset;
            this.setNodeLocationFromNode = setNodeLocationOnlyOffset;
            this.cstPostRule = noop;
            this.setInitialNodeLocation = this.setInitialNodeLocationOnlyOffsetRecovery;
          } else {
            this.setNodeLocationFromToken = noop;
            this.setNodeLocationFromNode = noop;
            this.cstPostRule = this.cstPostRuleOnlyOffset;
            this.setInitialNodeLocation = this.setInitialNodeLocationOnlyOffsetRegular;
          }
        } else if (/none/i.test(this.nodeLocationTracking)) {
          this.setNodeLocationFromToken = noop;
          this.setNodeLocationFromNode = noop;
          this.cstPostRule = noop;
          this.setInitialNodeLocation = noop;
        } else {
          throw Error(`Invalid <nodeLocationTracking> config option: "${config.nodeLocationTracking}"`);
        }
      }
    }
    setInitialNodeLocationOnlyOffsetRecovery(cstNode) {
      cstNode.location = {
        startOffset: NaN,
        endOffset: NaN
      };
    }
    setInitialNodeLocationOnlyOffsetRegular(cstNode) {
      cstNode.location = {
        // without error recovery the starting Location of a new CstNode is guaranteed
        // To be the next Token's startOffset (for valid inputs).
        // For invalid inputs there won't be any CSTOutput so this potential
        // inaccuracy does not matter
        startOffset: this.LA(1).startOffset,
        endOffset: NaN
      };
    }
    setInitialNodeLocationFullRecovery(cstNode) {
      cstNode.location = {
        startOffset: NaN,
        startLine: NaN,
        startColumn: NaN,
        endOffset: NaN,
        endLine: NaN,
        endColumn: NaN
      };
    }
    /**
         *  @see setInitialNodeLocationOnlyOffsetRegular for explanation why this work
    
         * @param cstNode
         */
    setInitialNodeLocationFullRegular(cstNode) {
      const nextToken = this.LA(1);
      cstNode.location = {
        startOffset: nextToken.startOffset,
        startLine: nextToken.startLine,
        startColumn: nextToken.startColumn,
        endOffset: NaN,
        endLine: NaN,
        endColumn: NaN
      };
    }
    cstInvocationStateUpdate(fullRuleName) {
      const cstNode = {
        name: fullRuleName,
        children: /* @__PURE__ */ Object.create(null)
      };
      this.setInitialNodeLocation(cstNode);
      this.CST_STACK.push(cstNode);
    }
    cstFinallyStateUpdate() {
      this.CST_STACK.pop();
    }
    cstPostRuleFull(ruleCstNode) {
      const prevToken = this.LA(0);
      const loc = ruleCstNode.location;
      if (loc.startOffset <= prevToken.startOffset === true) {
        loc.endOffset = prevToken.endOffset;
        loc.endLine = prevToken.endLine;
        loc.endColumn = prevToken.endColumn;
      } else {
        loc.startOffset = NaN;
        loc.startLine = NaN;
        loc.startColumn = NaN;
      }
    }
    cstPostRuleOnlyOffset(ruleCstNode) {
      const prevToken = this.LA(0);
      const loc = ruleCstNode.location;
      if (loc.startOffset <= prevToken.startOffset === true) {
        loc.endOffset = prevToken.endOffset;
      } else {
        loc.startOffset = NaN;
      }
    }
    cstPostTerminal(key, consumedToken) {
      const rootCst = this.CST_STACK[this.CST_STACK.length - 1];
      addTerminalToCst(rootCst, consumedToken, key);
      this.setNodeLocationFromToken(rootCst.location, consumedToken);
    }
    cstPostNonTerminal(ruleCstResult, ruleName) {
      const preCstNode = this.CST_STACK[this.CST_STACK.length - 1];
      addNoneTerminalToCst(preCstNode, ruleName, ruleCstResult);
      this.setNodeLocationFromNode(preCstNode.location, ruleCstResult.location);
    }
    getBaseCstVisitorConstructor() {
      if (isUndefined(this.baseCstVisitorConstructor)) {
        const newBaseCstVisitorConstructor = createBaseSemanticVisitorConstructor(
          this.className,
          keys(this.gastProductionsCache)
        );
        this.baseCstVisitorConstructor = newBaseCstVisitorConstructor;
        return newBaseCstVisitorConstructor;
      }
      return this.baseCstVisitorConstructor;
    }
    getBaseCstVisitorConstructorWithDefaults() {
      if (isUndefined(this.baseCstVisitorWithDefaultsConstructor)) {
        const newConstructor = createBaseVisitorConstructorWithDefaults(
          this.className,
          keys(this.gastProductionsCache),
          this.getBaseCstVisitorConstructor()
        );
        this.baseCstVisitorWithDefaultsConstructor = newConstructor;
        return newConstructor;
      }
      return this.baseCstVisitorWithDefaultsConstructor;
    }
    getLastExplicitRuleShortName() {
      const ruleStack = this.RULE_STACK;
      return ruleStack[ruleStack.length - 1];
    }
    getPreviousExplicitRuleShortName() {
      const ruleStack = this.RULE_STACK;
      return ruleStack[ruleStack.length - 2];
    }
    getLastExplicitRuleOccurrenceIndex() {
      const occurrenceStack = this.RULE_OCCURRENCE_STACK;
      return occurrenceStack[occurrenceStack.length - 1];
    }
  }
  class LexerAdapter {
    initLexerAdapter() {
      this.tokVector = [];
      this.tokVectorLength = 0;
      this.currIdx = -1;
    }
    set input(newInput) {
      if (this.selfAnalysisDone !== true) {
        throw Error(`Missing <performSelfAnalysis> invocation at the end of the Parser's constructor.`);
      }
      this.reset();
      this.tokVector = newInput;
      this.tokVectorLength = newInput.length;
    }
    get input() {
      return this.tokVector;
    }
    // skips a token and returns the next token
    SKIP_TOKEN() {
      if (this.currIdx <= this.tokVector.length - 2) {
        this.consumeToken();
        return this.LA(1);
      } else {
        return END_OF_FILE;
      }
    }
    // Lexer (accessing Token vector) related methods which can be overridden to implement lazy lexers
    // or lexers dependent on parser context.
    LA(howMuch) {
      const soughtIdx = this.currIdx + howMuch;
      if (soughtIdx < 0 || this.tokVectorLength <= soughtIdx) {
        return END_OF_FILE;
      } else {
        return this.tokVector[soughtIdx];
      }
    }
    consumeToken() {
      this.currIdx++;
    }
    exportLexerState() {
      return this.currIdx;
    }
    importLexerState(newState) {
      this.currIdx = newState;
    }
    resetLexerState() {
      this.currIdx = -1;
    }
    moveToTerminatedState() {
      this.currIdx = this.tokVector.length - 1;
    }
    getLexerPosition() {
      return this.exportLexerState();
    }
  }
  class RecognizerApi {
    ACTION(impl) {
      return impl.call(this);
    }
    consume(idx, tokType, options) {
      return this.consumeInternal(tokType, idx, options);
    }
    subrule(idx, ruleToCall, options) {
      return this.subruleInternal(ruleToCall, idx, options);
    }
    option(idx, actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, idx);
    }
    or(idx, altsOrOpts) {
      return this.orInternal(altsOrOpts, idx);
    }
    many(idx, actionORMethodDef) {
      return this.manyInternal(idx, actionORMethodDef);
    }
    atLeastOne(idx, actionORMethodDef) {
      return this.atLeastOneInternal(idx, actionORMethodDef);
    }
    CONSUME(tokType, options) {
      return this.consumeInternal(tokType, 0, options);
    }
    CONSUME1(tokType, options) {
      return this.consumeInternal(tokType, 1, options);
    }
    CONSUME2(tokType, options) {
      return this.consumeInternal(tokType, 2, options);
    }
    CONSUME3(tokType, options) {
      return this.consumeInternal(tokType, 3, options);
    }
    CONSUME4(tokType, options) {
      return this.consumeInternal(tokType, 4, options);
    }
    CONSUME5(tokType, options) {
      return this.consumeInternal(tokType, 5, options);
    }
    CONSUME6(tokType, options) {
      return this.consumeInternal(tokType, 6, options);
    }
    CONSUME7(tokType, options) {
      return this.consumeInternal(tokType, 7, options);
    }
    CONSUME8(tokType, options) {
      return this.consumeInternal(tokType, 8, options);
    }
    CONSUME9(tokType, options) {
      return this.consumeInternal(tokType, 9, options);
    }
    SUBRULE(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 0, options);
    }
    SUBRULE1(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 1, options);
    }
    SUBRULE2(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 2, options);
    }
    SUBRULE3(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 3, options);
    }
    SUBRULE4(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 4, options);
    }
    SUBRULE5(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 5, options);
    }
    SUBRULE6(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 6, options);
    }
    SUBRULE7(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 7, options);
    }
    SUBRULE8(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 8, options);
    }
    SUBRULE9(ruleToCall, options) {
      return this.subruleInternal(ruleToCall, 9, options);
    }
    OPTION(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 0);
    }
    OPTION1(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 1);
    }
    OPTION2(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 2);
    }
    OPTION3(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 3);
    }
    OPTION4(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 4);
    }
    OPTION5(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 5);
    }
    OPTION6(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 6);
    }
    OPTION7(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 7);
    }
    OPTION8(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 8);
    }
    OPTION9(actionORMethodDef) {
      return this.optionInternal(actionORMethodDef, 9);
    }
    OR(altsOrOpts) {
      return this.orInternal(altsOrOpts, 0);
    }
    OR1(altsOrOpts) {
      return this.orInternal(altsOrOpts, 1);
    }
    OR2(altsOrOpts) {
      return this.orInternal(altsOrOpts, 2);
    }
    OR3(altsOrOpts) {
      return this.orInternal(altsOrOpts, 3);
    }
    OR4(altsOrOpts) {
      return this.orInternal(altsOrOpts, 4);
    }
    OR5(altsOrOpts) {
      return this.orInternal(altsOrOpts, 5);
    }
    OR6(altsOrOpts) {
      return this.orInternal(altsOrOpts, 6);
    }
    OR7(altsOrOpts) {
      return this.orInternal(altsOrOpts, 7);
    }
    OR8(altsOrOpts) {
      return this.orInternal(altsOrOpts, 8);
    }
    OR9(altsOrOpts) {
      return this.orInternal(altsOrOpts, 9);
    }
    MANY(actionORMethodDef) {
      this.manyInternal(0, actionORMethodDef);
    }
    MANY1(actionORMethodDef) {
      this.manyInternal(1, actionORMethodDef);
    }
    MANY2(actionORMethodDef) {
      this.manyInternal(2, actionORMethodDef);
    }
    MANY3(actionORMethodDef) {
      this.manyInternal(3, actionORMethodDef);
    }
    MANY4(actionORMethodDef) {
      this.manyInternal(4, actionORMethodDef);
    }
    MANY5(actionORMethodDef) {
      this.manyInternal(5, actionORMethodDef);
    }
    MANY6(actionORMethodDef) {
      this.manyInternal(6, actionORMethodDef);
    }
    MANY7(actionORMethodDef) {
      this.manyInternal(7, actionORMethodDef);
    }
    MANY8(actionORMethodDef) {
      this.manyInternal(8, actionORMethodDef);
    }
    MANY9(actionORMethodDef) {
      this.manyInternal(9, actionORMethodDef);
    }
    MANY_SEP(options) {
      this.manySepFirstInternal(0, options);
    }
    MANY_SEP1(options) {
      this.manySepFirstInternal(1, options);
    }
    MANY_SEP2(options) {
      this.manySepFirstInternal(2, options);
    }
    MANY_SEP3(options) {
      this.manySepFirstInternal(3, options);
    }
    MANY_SEP4(options) {
      this.manySepFirstInternal(4, options);
    }
    MANY_SEP5(options) {
      this.manySepFirstInternal(5, options);
    }
    MANY_SEP6(options) {
      this.manySepFirstInternal(6, options);
    }
    MANY_SEP7(options) {
      this.manySepFirstInternal(7, options);
    }
    MANY_SEP8(options) {
      this.manySepFirstInternal(8, options);
    }
    MANY_SEP9(options) {
      this.manySepFirstInternal(9, options);
    }
    AT_LEAST_ONE(actionORMethodDef) {
      this.atLeastOneInternal(0, actionORMethodDef);
    }
    AT_LEAST_ONE1(actionORMethodDef) {
      return this.atLeastOneInternal(1, actionORMethodDef);
    }
    AT_LEAST_ONE2(actionORMethodDef) {
      this.atLeastOneInternal(2, actionORMethodDef);
    }
    AT_LEAST_ONE3(actionORMethodDef) {
      this.atLeastOneInternal(3, actionORMethodDef);
    }
    AT_LEAST_ONE4(actionORMethodDef) {
      this.atLeastOneInternal(4, actionORMethodDef);
    }
    AT_LEAST_ONE5(actionORMethodDef) {
      this.atLeastOneInternal(5, actionORMethodDef);
    }
    AT_LEAST_ONE6(actionORMethodDef) {
      this.atLeastOneInternal(6, actionORMethodDef);
    }
    AT_LEAST_ONE7(actionORMethodDef) {
      this.atLeastOneInternal(7, actionORMethodDef);
    }
    AT_LEAST_ONE8(actionORMethodDef) {
      this.atLeastOneInternal(8, actionORMethodDef);
    }
    AT_LEAST_ONE9(actionORMethodDef) {
      this.atLeastOneInternal(9, actionORMethodDef);
    }
    AT_LEAST_ONE_SEP(options) {
      this.atLeastOneSepFirstInternal(0, options);
    }
    AT_LEAST_ONE_SEP1(options) {
      this.atLeastOneSepFirstInternal(1, options);
    }
    AT_LEAST_ONE_SEP2(options) {
      this.atLeastOneSepFirstInternal(2, options);
    }
    AT_LEAST_ONE_SEP3(options) {
      this.atLeastOneSepFirstInternal(3, options);
    }
    AT_LEAST_ONE_SEP4(options) {
      this.atLeastOneSepFirstInternal(4, options);
    }
    AT_LEAST_ONE_SEP5(options) {
      this.atLeastOneSepFirstInternal(5, options);
    }
    AT_LEAST_ONE_SEP6(options) {
      this.atLeastOneSepFirstInternal(6, options);
    }
    AT_LEAST_ONE_SEP7(options) {
      this.atLeastOneSepFirstInternal(7, options);
    }
    AT_LEAST_ONE_SEP8(options) {
      this.atLeastOneSepFirstInternal(8, options);
    }
    AT_LEAST_ONE_SEP9(options) {
      this.atLeastOneSepFirstInternal(9, options);
    }
    RULE(name, implementation, config = DEFAULT_RULE_CONFIG) {
      if (includes(this.definedRulesNames, name)) {
        const errMsg = defaultGrammarValidatorErrorProvider.buildDuplicateRuleNameError({
          topLevelRule: name,
          grammarName: this.className
        });
        const error = {
          message: errMsg,
          type: ParserDefinitionErrorType.DUPLICATE_RULE_NAME,
          ruleName: name
        };
        this.definitionErrors.push(error);
      }
      this.definedRulesNames.push(name);
      const ruleImplementation = this.defineRule(name, implementation, config);
      this[name] = ruleImplementation;
      return ruleImplementation;
    }
    OVERRIDE_RULE(name, impl, config = DEFAULT_RULE_CONFIG) {
      const ruleErrors = validateRuleIsOverridden(name, this.definedRulesNames, this.className);
      this.definitionErrors = this.definitionErrors.concat(ruleErrors);
      const ruleImplementation = this.defineRule(name, impl, config);
      this[name] = ruleImplementation;
      return ruleImplementation;
    }
    BACKTRACK(grammarRule, args) {
      return function() {
        this.isBackTrackingStack.push(1);
        const orgState = this.saveRecogState();
        try {
          grammarRule.apply(this, args);
          return true;
        } catch (e) {
          if (isRecognitionException(e)) {
            return false;
          } else {
            throw e;
          }
        } finally {
          this.reloadRecogState(orgState);
          this.isBackTrackingStack.pop();
        }
      };
    }
    // GAST export APIs
    getGAstProductions() {
      return this.gastProductionsCache;
    }
    getSerializedGastProductions() {
      return serializeGrammar(values(this.gastProductionsCache));
    }
  }
  class RecognizerEngine {
    initRecognizerEngine(tokenVocabulary, config) {
      this.className = this.constructor.name;
      this.shortRuleNameToFull = {};
      this.fullRuleNameToShort = {};
      this.ruleShortNameIdx = 256;
      this.tokenMatcher = tokenStructuredMatcherNoCategories;
      this.subruleIdx = 0;
      this.definedRulesNames = [];
      this.tokensMap = {};
      this.isBackTrackingStack = [];
      this.RULE_STACK = [];
      this.RULE_OCCURRENCE_STACK = [];
      this.gastProductionsCache = {};
      if (has(config, "serializedGrammar")) {
        throw Error(
          "The Parser's configuration can no longer contain a <serializedGrammar> property.\n	See: https://chevrotain.io/docs/changes/BREAKING_CHANGES.html#_6-0-0\n	For Further details."
        );
      }
      if (isArray$1(tokenVocabulary)) {
        if (isEmpty(tokenVocabulary)) {
          throw Error(
            "A Token Vocabulary cannot be empty.\n	Note that the first argument for the parser constructor\n	is no longer a Token vector (since v4.0)."
          );
        }
        if (typeof tokenVocabulary[0].startOffset === "number") {
          throw Error(
            "The Parser constructor no longer accepts a token vector as the first argument.\n	See: https://chevrotain.io/docs/changes/BREAKING_CHANGES.html#_4-0-0\n	For Further details."
          );
        }
      }
      if (isArray$1(tokenVocabulary)) {
        this.tokensMap = reduce(
          tokenVocabulary,
          (acc, tokType) => {
            acc[tokType.name] = tokType;
            return acc;
          },
          {}
        );
      } else if (has(tokenVocabulary, "modes") && every(flatten(values(tokenVocabulary.modes)), isTokenType)) {
        const allTokenTypes2 = flatten(values(tokenVocabulary.modes));
        const uniqueTokens = uniq(allTokenTypes2);
        this.tokensMap = reduce(
          uniqueTokens,
          (acc, tokType) => {
            acc[tokType.name] = tokType;
            return acc;
          },
          {}
        );
      } else if (isObject(tokenVocabulary)) {
        this.tokensMap = clone(tokenVocabulary);
      } else {
        throw new Error(
          "<tokensDictionary> argument must be An Array of Token constructors, A dictionary of Token constructors or an IMultiModeLexerDefinition"
        );
      }
      this.tokensMap["EOF"] = EOF;
      const allTokenTypes = has(tokenVocabulary, "modes") ? flatten(values(tokenVocabulary.modes)) : values(tokenVocabulary);
      const noTokenCategoriesUsed = every(
        allTokenTypes,
        (tokenConstructor) => isEmpty(tokenConstructor.categoryMatches)
      );
      this.tokenMatcher = noTokenCategoriesUsed ? tokenStructuredMatcherNoCategories : tokenStructuredMatcher;
      augmentTokenTypes(values(this.tokensMap));
    }
    defineRule(ruleName, impl, config) {
      if (this.selfAnalysisDone) {
        throw Error(
          `Grammar rule <${ruleName}> may not be defined after the 'performSelfAnalysis' method has been called'
Make sure that all grammar rule definitions are done before 'performSelfAnalysis' is called.`
        );
      }
      const resyncEnabled = has(config, "resyncEnabled") ? config.resyncEnabled : DEFAULT_RULE_CONFIG.resyncEnabled;
      const recoveryValueFunc = has(config, "recoveryValueFunc") ? config.recoveryValueFunc : DEFAULT_RULE_CONFIG.recoveryValueFunc;
      const shortName = this.ruleShortNameIdx << BITS_FOR_METHOD_TYPE + BITS_FOR_OCCURRENCE_IDX;
      this.ruleShortNameIdx++;
      this.shortRuleNameToFull[shortName] = ruleName;
      this.fullRuleNameToShort[ruleName] = shortName;
      let invokeRuleWithTry;
      if (this.outputCst === true) {
        invokeRuleWithTry = function invokeRuleWithTry2(...args) {
          try {
            this.ruleInvocationStateUpdate(shortName, ruleName, this.subruleIdx);
            impl.apply(this, args);
            const cst = this.CST_STACK[this.CST_STACK.length - 1];
            this.cstPostRule(cst);
            return cst;
          } catch (e) {
            return this.invokeRuleCatch(e, resyncEnabled, recoveryValueFunc);
          } finally {
            this.ruleFinallyStateUpdate();
          }
        };
      } else {
        invokeRuleWithTry = function invokeRuleWithTryCst(...args) {
          try {
            this.ruleInvocationStateUpdate(shortName, ruleName, this.subruleIdx);
            return impl.apply(this, args);
          } catch (e) {
            return this.invokeRuleCatch(e, resyncEnabled, recoveryValueFunc);
          } finally {
            this.ruleFinallyStateUpdate();
          }
        };
      }
      const wrappedGrammarRule = Object.assign(invokeRuleWithTry, { ruleName, originalGrammarAction: impl });
      return wrappedGrammarRule;
    }
    invokeRuleCatch(e, resyncEnabledConfig, recoveryValueFunc) {
      const isFirstInvokedRule = this.RULE_STACK.length === 1;
      const reSyncEnabled = resyncEnabledConfig && !this.isBackTracking() && this.recoveryEnabled;
      if (isRecognitionException(e)) {
        const recogError = e;
        if (reSyncEnabled) {
          const reSyncTokType = this.findReSyncTokenType();
          if (this.isInCurrentRuleReSyncSet(reSyncTokType)) {
            recogError.resyncedTokens = this.reSyncTo(reSyncTokType);
            if (this.outputCst) {
              const partialCstResult = this.CST_STACK[this.CST_STACK.length - 1];
              partialCstResult.recoveredNode = true;
              return partialCstResult;
            } else {
              return recoveryValueFunc(e);
            }
          } else {
            if (this.outputCst) {
              const partialCstResult = this.CST_STACK[this.CST_STACK.length - 1];
              partialCstResult.recoveredNode = true;
              recogError.partialCstResult = partialCstResult;
            }
            throw recogError;
          }
        } else if (isFirstInvokedRule) {
          this.moveToTerminatedState();
          return recoveryValueFunc(e);
        } else {
          throw recogError;
        }
      } else {
        throw e;
      }
    }
    // Implementation of parsing DSL
    optionInternal(actionORMethodDef, occurrence) {
      const key = this.getKeyForAutomaticLookahead(OPTION_IDX, occurrence);
      return this.optionInternalLogic(actionORMethodDef, occurrence, key);
    }
    optionInternalLogic(actionORMethodDef, occurrence, key) {
      let lookAheadFunc = this.getLaFuncFromCache(key);
      let action;
      if (typeof actionORMethodDef !== "function") {
        action = actionORMethodDef.DEF;
        const predicate = actionORMethodDef.GATE;
        if (predicate !== void 0) {
          const orgLookaheadFunction = lookAheadFunc;
          lookAheadFunc = () => {
            return predicate.call(this) && orgLookaheadFunction.call(this);
          };
        }
      } else {
        action = actionORMethodDef;
      }
      if (lookAheadFunc.call(this) === true) {
        return action.call(this);
      }
      return void 0;
    }
    atLeastOneInternal(prodOccurrence, actionORMethodDef) {
      const laKey = this.getKeyForAutomaticLookahead(AT_LEAST_ONE_IDX, prodOccurrence);
      return this.atLeastOneInternalLogic(prodOccurrence, actionORMethodDef, laKey);
    }
    atLeastOneInternalLogic(prodOccurrence, actionORMethodDef, key) {
      let lookAheadFunc = this.getLaFuncFromCache(key);
      let action;
      if (typeof actionORMethodDef !== "function") {
        action = actionORMethodDef.DEF;
        const predicate = actionORMethodDef.GATE;
        if (predicate !== void 0) {
          const orgLookaheadFunction = lookAheadFunc;
          lookAheadFunc = () => {
            return predicate.call(this) && orgLookaheadFunction.call(this);
          };
        }
      } else {
        action = actionORMethodDef;
      }
      if (lookAheadFunc.call(this) === true) {
        let notStuck = this.doSingleRepetition(action);
        while (lookAheadFunc.call(this) === true && notStuck === true) {
          notStuck = this.doSingleRepetition(action);
        }
      } else {
        throw this.raiseEarlyExitException(prodOccurrence, PROD_TYPE.REPETITION_MANDATORY, actionORMethodDef.ERR_MSG);
      }
      this.attemptInRepetitionRecovery(
        this.atLeastOneInternal,
        [prodOccurrence, actionORMethodDef],
        lookAheadFunc,
        AT_LEAST_ONE_IDX,
        prodOccurrence,
        NextTerminalAfterAtLeastOneWalker
      );
    }
    atLeastOneSepFirstInternal(prodOccurrence, options) {
      const laKey = this.getKeyForAutomaticLookahead(AT_LEAST_ONE_SEP_IDX, prodOccurrence);
      this.atLeastOneSepFirstInternalLogic(prodOccurrence, options, laKey);
    }
    atLeastOneSepFirstInternalLogic(prodOccurrence, options, key) {
      const action = options.DEF;
      const separator = options.SEP;
      const firstIterationLookaheadFunc = this.getLaFuncFromCache(key);
      if (firstIterationLookaheadFunc.call(this) === true) {
        action.call(this);
        const separatorLookAheadFunc = () => {
          return this.tokenMatcher(this.LA(1), separator);
        };
        while (this.tokenMatcher(this.LA(1), separator) === true) {
          this.CONSUME(separator);
          action.call(this);
        }
        this.attemptInRepetitionRecovery(
          this.repetitionSepSecondInternal,
          [prodOccurrence, separator, separatorLookAheadFunc, action, NextTerminalAfterAtLeastOneSepWalker],
          separatorLookAheadFunc,
          AT_LEAST_ONE_SEP_IDX,
          prodOccurrence,
          NextTerminalAfterAtLeastOneSepWalker
        );
      } else {
        throw this.raiseEarlyExitException(
          prodOccurrence,
          PROD_TYPE.REPETITION_MANDATORY_WITH_SEPARATOR,
          options.ERR_MSG
        );
      }
    }
    manyInternal(prodOccurrence, actionORMethodDef) {
      const laKey = this.getKeyForAutomaticLookahead(MANY_IDX, prodOccurrence);
      return this.manyInternalLogic(prodOccurrence, actionORMethodDef, laKey);
    }
    manyInternalLogic(prodOccurrence, actionORMethodDef, key) {
      let lookaheadFunction = this.getLaFuncFromCache(key);
      let action;
      if (typeof actionORMethodDef !== "function") {
        action = actionORMethodDef.DEF;
        const predicate = actionORMethodDef.GATE;
        if (predicate !== void 0) {
          const orgLookaheadFunction = lookaheadFunction;
          lookaheadFunction = () => {
            return predicate.call(this) && orgLookaheadFunction.call(this);
          };
        }
      } else {
        action = actionORMethodDef;
      }
      let notStuck = true;
      while (lookaheadFunction.call(this) === true && notStuck === true) {
        notStuck = this.doSingleRepetition(action);
      }
      this.attemptInRepetitionRecovery(
        this.manyInternal,
        [prodOccurrence, actionORMethodDef],
        lookaheadFunction,
        MANY_IDX,
        prodOccurrence,
        NextTerminalAfterManyWalker,
        // The notStuck parameter is only relevant when "attemptInRepetitionRecovery"
        // is invoked from manyInternal, in the MANY_SEP case and AT_LEAST_ONE[_SEP]
        // An infinite loop cannot occur as:
        // - Either the lookahead is guaranteed to consume something (Single Token Separator)
        // - AT_LEAST_ONE by definition is guaranteed to consume something (or error out).
        notStuck
      );
    }
    manySepFirstInternal(prodOccurrence, options) {
      const laKey = this.getKeyForAutomaticLookahead(MANY_SEP_IDX, prodOccurrence);
      this.manySepFirstInternalLogic(prodOccurrence, options, laKey);
    }
    manySepFirstInternalLogic(prodOccurrence, options, key) {
      const action = options.DEF;
      const separator = options.SEP;
      const firstIterationLaFunc = this.getLaFuncFromCache(key);
      if (firstIterationLaFunc.call(this) === true) {
        action.call(this);
        const separatorLookAheadFunc = () => {
          return this.tokenMatcher(this.LA(1), separator);
        };
        while (this.tokenMatcher(this.LA(1), separator) === true) {
          this.CONSUME(separator);
          action.call(this);
        }
        this.attemptInRepetitionRecovery(
          this.repetitionSepSecondInternal,
          [prodOccurrence, separator, separatorLookAheadFunc, action, NextTerminalAfterManySepWalker],
          separatorLookAheadFunc,
          MANY_SEP_IDX,
          prodOccurrence,
          NextTerminalAfterManySepWalker
        );
      }
    }
    repetitionSepSecondInternal(prodOccurrence, separator, separatorLookAheadFunc, action, nextTerminalAfterWalker) {
      while (separatorLookAheadFunc()) {
        this.CONSUME(separator);
        action.call(this);
      }
      this.attemptInRepetitionRecovery(
        this.repetitionSepSecondInternal,
        [prodOccurrence, separator, separatorLookAheadFunc, action, nextTerminalAfterWalker],
        separatorLookAheadFunc,
        AT_LEAST_ONE_SEP_IDX,
        prodOccurrence,
        nextTerminalAfterWalker
      );
    }
    doSingleRepetition(action) {
      const beforeIteration = this.getLexerPosition();
      action.call(this);
      const afterIteration = this.getLexerPosition();
      return afterIteration > beforeIteration;
    }
    orInternal(altsOrOpts, occurrence) {
      const laKey = this.getKeyForAutomaticLookahead(OR_IDX, occurrence);
      const alts = isArray$1(altsOrOpts) ? altsOrOpts : altsOrOpts.DEF;
      const laFunc = this.getLaFuncFromCache(laKey);
      const altIdxToTake = laFunc.call(this, alts);
      if (altIdxToTake !== void 0) {
        const chosenAlternative = alts[altIdxToTake];
        return chosenAlternative.ALT.call(this);
      }
      this.raiseNoAltException(occurrence, altsOrOpts.ERR_MSG);
    }
    ruleFinallyStateUpdate() {
      this.RULE_STACK.pop();
      this.RULE_OCCURRENCE_STACK.pop();
      this.cstFinallyStateUpdate();
      if (this.RULE_STACK.length === 0 && this.isAtEndOfInput() === false) {
        const firstRedundantTok = this.LA(1);
        const errMsg = this.errorMessageProvider.buildNotAllInputParsedMessage({
          firstRedundant: firstRedundantTok,
          ruleName: this.getCurrRuleFullName()
        });
        this.SAVE_ERROR(new NotAllInputParsedException(errMsg, firstRedundantTok));
      }
    }
    subruleInternal(ruleToCall, idx, options) {
      let ruleResult;
      try {
        const args = options !== void 0 ? options.ARGS : void 0;
        this.subruleIdx = idx;
        ruleResult = ruleToCall.apply(this, args);
        this.cstPostNonTerminal(
          ruleResult,
          options !== void 0 && options.LABEL !== void 0 ? options.LABEL : ruleToCall.ruleName
        );
        return ruleResult;
      } catch (e) {
        throw this.subruleInternalError(e, options, ruleToCall.ruleName);
      }
    }
    subruleInternalError(e, options, ruleName) {
      if (isRecognitionException(e) && e.partialCstResult !== void 0) {
        this.cstPostNonTerminal(
          e.partialCstResult,
          options !== void 0 && options.LABEL !== void 0 ? options.LABEL : ruleName
        );
        delete e.partialCstResult;
      }
      throw e;
    }
    consumeInternal(tokType, idx, options) {
      let consumedToken;
      try {
        const nextToken = this.LA(1);
        if (this.tokenMatcher(nextToken, tokType) === true) {
          this.consumeToken();
          consumedToken = nextToken;
        } else {
          this.consumeInternalError(tokType, nextToken, options);
        }
      } catch (eFromConsumption) {
        consumedToken = this.consumeInternalRecovery(tokType, idx, eFromConsumption);
      }
      this.cstPostTerminal(
        options !== void 0 && options.LABEL !== void 0 ? options.LABEL : tokType.name,
        consumedToken
      );
      return consumedToken;
    }
    consumeInternalError(tokType, nextToken, options) {
      let msg;
      const previousToken = this.LA(0);
      if (options !== void 0 && options.ERR_MSG) {
        msg = options.ERR_MSG;
      } else {
        msg = this.errorMessageProvider.buildMismatchTokenMessage({
          expected: tokType,
          actual: nextToken,
          previous: previousToken,
          ruleName: this.getCurrRuleFullName()
        });
      }
      throw this.SAVE_ERROR(new MismatchedTokenException(msg, nextToken, previousToken));
    }
    consumeInternalRecovery(tokType, idx, eFromConsumption) {
      if (this.recoveryEnabled && // TODO: more robust checking of the exception type. Perhaps Typescript extending expressions?
      eFromConsumption.name === "MismatchedTokenException" && !this.isBackTracking()) {
        const follows = this.getFollowsForInRuleRecovery(tokType, idx);
        try {
          return this.tryInRuleRecovery(tokType, follows);
        } catch (eFromInRuleRecovery) {
          if (eFromInRuleRecovery.name === IN_RULE_RECOVERY_EXCEPTION) {
            throw eFromConsumption;
          } else {
            throw eFromInRuleRecovery;
          }
        }
      } else {
        throw eFromConsumption;
      }
    }
    saveRecogState() {
      const savedErrors = this.errors;
      const savedRuleStack = clone(this.RULE_STACK);
      return {
        errors: savedErrors,
        lexerState: this.exportLexerState(),
        RULE_STACK: savedRuleStack,
        CST_STACK: this.CST_STACK
      };
    }
    reloadRecogState(newState) {
      this.errors = newState.errors;
      this.importLexerState(newState.lexerState);
      this.RULE_STACK = newState.RULE_STACK;
    }
    ruleInvocationStateUpdate(shortName, fullName, idxInCallingRule) {
      this.RULE_OCCURRENCE_STACK.push(idxInCallingRule);
      this.RULE_STACK.push(shortName);
      this.cstInvocationStateUpdate(fullName);
    }
    isBackTracking() {
      return this.isBackTrackingStack.length !== 0;
    }
    getCurrRuleFullName() {
      const shortName = this.getLastExplicitRuleShortName();
      return this.shortRuleNameToFull[shortName];
    }
    shortRuleNameToFullName(shortName) {
      return this.shortRuleNameToFull[shortName];
    }
    isAtEndOfInput() {
      return this.tokenMatcher(this.LA(1), EOF);
    }
    reset() {
      this.resetLexerState();
      this.subruleIdx = 0;
      this.isBackTrackingStack = [];
      this.errors = [];
      this.RULE_STACK = [];
      this.CST_STACK = [];
      this.RULE_OCCURRENCE_STACK = [];
    }
  }
  class ErrorHandler {
    initErrorHandler(config) {
      this._errors = [];
      this.errorMessageProvider = has(config, "errorMessageProvider") ? config.errorMessageProvider : DEFAULT_PARSER_CONFIG.errorMessageProvider;
    }
    SAVE_ERROR(error) {
      if (isRecognitionException(error)) {
        error.context = {
          ruleStack: this.getHumanReadableRuleStack(),
          ruleOccurrenceStack: clone(this.RULE_OCCURRENCE_STACK)
        };
        this._errors.push(error);
        return error;
      } else {
        throw Error("Trying to save an Error which is not a RecognitionException");
      }
    }
    get errors() {
      return clone(this._errors);
    }
    set errors(newErrors) {
      this._errors = newErrors;
    }
    // TODO: consider caching the error message computed information
    raiseEarlyExitException(occurrence, prodType, userDefinedErrMsg) {
      const ruleName = this.getCurrRuleFullName();
      const ruleGrammar = this.getGAstProductions()[ruleName];
      const lookAheadPathsPerAlternative = getLookaheadPathsForOptionalProd(
        occurrence,
        ruleGrammar,
        prodType,
        this.maxLookahead
      );
      const insideProdPaths = lookAheadPathsPerAlternative[0];
      const actualTokens = [];
      for (let i = 1; i <= this.maxLookahead; i++) {
        actualTokens.push(this.LA(i));
      }
      const msg = this.errorMessageProvider.buildEarlyExitMessage({
        expectedIterationPaths: insideProdPaths,
        actual: actualTokens,
        previous: this.LA(0),
        customUserDescription: userDefinedErrMsg,
        ruleName
      });
      throw this.SAVE_ERROR(new EarlyExitException(msg, this.LA(1), this.LA(0)));
    }
    // TODO: consider caching the error message computed information
    raiseNoAltException(occurrence, errMsgTypes) {
      const ruleName = this.getCurrRuleFullName();
      const ruleGrammar = this.getGAstProductions()[ruleName];
      const lookAheadPathsPerAlternative = getLookaheadPathsForOr(occurrence, ruleGrammar, this.maxLookahead);
      const actualTokens = [];
      for (let i = 1; i <= this.maxLookahead; i++) {
        actualTokens.push(this.LA(i));
      }
      const previousToken = this.LA(0);
      const errMsg = this.errorMessageProvider.buildNoViableAltMessage({
        expectedPathsPerAlt: lookAheadPathsPerAlternative,
        actual: actualTokens,
        previous: previousToken,
        customUserDescription: errMsgTypes,
        ruleName: this.getCurrRuleFullName()
      });
      throw this.SAVE_ERROR(new NoViableAltException(errMsg, this.LA(1), previousToken));
    }
  }
  class ContentAssist {
    initContentAssist() {
    }
    computeContentAssist(startRuleName, precedingInput) {
      const startRuleGast = this.gastProductionsCache[startRuleName];
      if (isUndefined(startRuleGast)) {
        throw Error(`Rule ->${startRuleName}<- does not exist in this grammar.`);
      }
      return nextPossibleTokensAfter([startRuleGast], precedingInput, this.tokenMatcher, this.maxLookahead);
    }
    // TODO: should this be a member method or a utility? it does not have any state or usage of 'this'...
    // TODO: should this be more explicitly part of the public API?
    getNextPossibleTokenTypes(grammarPath) {
      const topRuleName = head(grammarPath.ruleStack);
      const gastProductions = this.getGAstProductions();
      const topProduction = gastProductions[topRuleName];
      const nextPossibleTokenTypes = new NextAfterTokenWalker(topProduction, grammarPath).startWalking();
      return nextPossibleTokenTypes;
    }
  }
  const RECORDING_NULL_OBJECT = {
    description: "This Object indicates the Parser is during Recording Phase"
  };
  Object.freeze(RECORDING_NULL_OBJECT);
  const HANDLE_SEPARATOR = true;
  const MAX_METHOD_IDX = Math.pow(2, BITS_FOR_OCCURRENCE_IDX) - 1;
  const RFT = createToken2({ name: "RECORDING_PHASE_TOKEN", pattern: Lexer2.NA });
  augmentTokenTypes([RFT]);
  const RECORDING_PHASE_TOKEN = createTokenInstance(
    RFT,
    "This IToken indicates the Parser is in Recording Phase\n	See: https://chevrotain.io/docs/guide/internals.html#grammar-recording for details",
    // Using "-1" instead of NaN (as in EOF) because an actual number is less likely to
    // cause errors if the output of LA or CONSUME would be (incorrectly) used during the recording phase.
    -1,
    -1,
    -1,
    -1,
    -1,
    -1
  );
  Object.freeze(RECORDING_PHASE_TOKEN);
  const RECORDING_PHASE_CSTNODE = {
    name: "This CSTNode indicates the Parser is in Recording Phase\n	See: https://chevrotain.io/docs/guide/internals.html#grammar-recording for details",
    children: {}
  };
  class GastRecorder {
    initGastRecorder(config) {
      this.recordingProdStack = [];
      this.RECORDING_PHASE = false;
    }
    enableRecording() {
      this.RECORDING_PHASE = true;
      this.TRACE_INIT("Enable Recording", () => {
        for (let i = 0; i < 10; i++) {
          const idx = i > 0 ? i : "";
          this[`CONSUME${idx}`] = function(arg1, arg2) {
            return this.consumeInternalRecord(arg1, i, arg2);
          };
          this[`SUBRULE${idx}`] = function(arg1, arg2) {
            return this.subruleInternalRecord(arg1, i, arg2);
          };
          this[`OPTION${idx}`] = function(arg1) {
            return this.optionInternalRecord(arg1, i);
          };
          this[`OR${idx}`] = function(arg1) {
            return this.orInternalRecord(arg1, i);
          };
          this[`MANY${idx}`] = function(arg1) {
            this.manyInternalRecord(i, arg1);
          };
          this[`MANY_SEP${idx}`] = function(arg1) {
            this.manySepFirstInternalRecord(i, arg1);
          };
          this[`AT_LEAST_ONE${idx}`] = function(arg1) {
            this.atLeastOneInternalRecord(i, arg1);
          };
          this[`AT_LEAST_ONE_SEP${idx}`] = function(arg1) {
            this.atLeastOneSepFirstInternalRecord(i, arg1);
          };
        }
        this[`consume`] = function(idx, arg1, arg2) {
          return this.consumeInternalRecord(arg1, idx, arg2);
        };
        this[`subrule`] = function(idx, arg1, arg2) {
          return this.subruleInternalRecord(arg1, idx, arg2);
        };
        this[`option`] = function(idx, arg1) {
          return this.optionInternalRecord(arg1, idx);
        };
        this[`or`] = function(idx, arg1) {
          return this.orInternalRecord(arg1, idx);
        };
        this[`many`] = function(idx, arg1) {
          this.manyInternalRecord(idx, arg1);
        };
        this[`atLeastOne`] = function(idx, arg1) {
          this.atLeastOneInternalRecord(idx, arg1);
        };
        this.ACTION = this.ACTION_RECORD;
        this.BACKTRACK = this.BACKTRACK_RECORD;
        this.LA = this.LA_RECORD;
      });
    }
    disableRecording() {
      this.RECORDING_PHASE = false;
      this.TRACE_INIT("Deleting Recording methods", () => {
        const that = this;
        for (let i = 0; i < 10; i++) {
          const idx = i > 0 ? i : "";
          delete that[`CONSUME${idx}`];
          delete that[`SUBRULE${idx}`];
          delete that[`OPTION${idx}`];
          delete that[`OR${idx}`];
          delete that[`MANY${idx}`];
          delete that[`MANY_SEP${idx}`];
          delete that[`AT_LEAST_ONE${idx}`];
          delete that[`AT_LEAST_ONE_SEP${idx}`];
        }
        delete that[`consume`];
        delete that[`subrule`];
        delete that[`option`];
        delete that[`or`];
        delete that[`many`];
        delete that[`atLeastOne`];
        delete that.ACTION;
        delete that.BACKTRACK;
        delete that.LA;
      });
    }
    //   Parser methods are called inside an ACTION?
    //   Maybe try/catch/finally on ACTIONS while disabling the recorders state changes?
    // @ts-expect-error -- noop place holder
    ACTION_RECORD(impl) {
    }
    // Executing backtracking logic will break our recording logic assumptions
    BACKTRACK_RECORD(grammarRule, args) {
      return () => true;
    }
    // LA is part of the official API and may be used for custom lookahead logic
    // by end users who may forget to wrap it in ACTION or inside a GATE
    LA_RECORD(howMuch) {
      return END_OF_FILE;
    }
    topLevelRuleRecord(name, def) {
      try {
        const newTopLevelRule = new Rule({ definition: [], name });
        newTopLevelRule.name = name;
        this.recordingProdStack.push(newTopLevelRule);
        def.call(this);
        this.recordingProdStack.pop();
        return newTopLevelRule;
      } catch (originalError) {
        if (originalError.KNOWN_RECORDER_ERROR !== true) {
          try {
            originalError.message = originalError.message + '\n	 This error was thrown during the "grammar recording phase" For more info see:\n	https://chevrotain.io/docs/guide/internals.html#grammar-recording';
          } catch (mutabilityError) {
            throw originalError;
          }
        }
        throw originalError;
      }
    }
    // Implementation of parsing DSL
    optionInternalRecord(actionORMethodDef, occurrence) {
      return recordProd.call(this, Option, actionORMethodDef, occurrence);
    }
    atLeastOneInternalRecord(occurrence, actionORMethodDef) {
      recordProd.call(this, RepetitionMandatory, actionORMethodDef, occurrence);
    }
    atLeastOneSepFirstInternalRecord(occurrence, options) {
      recordProd.call(this, RepetitionMandatoryWithSeparator, options, occurrence, HANDLE_SEPARATOR);
    }
    manyInternalRecord(occurrence, actionORMethodDef) {
      recordProd.call(this, Repetition, actionORMethodDef, occurrence);
    }
    manySepFirstInternalRecord(occurrence, options) {
      recordProd.call(this, RepetitionWithSeparator, options, occurrence, HANDLE_SEPARATOR);
    }
    orInternalRecord(altsOrOpts, occurrence) {
      return recordOrProd.call(this, altsOrOpts, occurrence);
    }
    subruleInternalRecord(ruleToCall, occurrence, options) {
      assertMethodIdxIsValid(occurrence);
      if (!ruleToCall || has(ruleToCall, "ruleName") === false) {
        const error = new Error(
          `<SUBRULE${getIdxSuffix(occurrence)}> argument is invalid expecting a Parser method reference but got: <${JSON.stringify(ruleToCall)}>
 inside top level rule: <${this.recordingProdStack[0].name}>`
        );
        error.KNOWN_RECORDER_ERROR = true;
        throw error;
      }
      const prevProd = last(this.recordingProdStack);
      const ruleName = ruleToCall.ruleName;
      const newNoneTerminal = new NonTerminal({
        idx: occurrence,
        nonTerminalName: ruleName,
        label: options === null || options === void 0 ? void 0 : options.LABEL,
        // The resolving of the `referencedRule` property will be done once all the Rule's GASTs have been created
        referencedRule: void 0
      });
      prevProd.definition.push(newNoneTerminal);
      return this.outputCst ? RECORDING_PHASE_CSTNODE : RECORDING_NULL_OBJECT;
    }
    consumeInternalRecord(tokType, occurrence, options) {
      assertMethodIdxIsValid(occurrence);
      if (!hasShortKeyProperty(tokType)) {
        const error = new Error(
          `<CONSUME${getIdxSuffix(occurrence)}> argument is invalid expecting a TokenType reference but got: <${JSON.stringify(tokType)}>
 inside top level rule: <${this.recordingProdStack[0].name}>`
        );
        error.KNOWN_RECORDER_ERROR = true;
        throw error;
      }
      const prevProd = last(this.recordingProdStack);
      const newNoneTerminal = new Terminal({
        idx: occurrence,
        terminalType: tokType,
        label: options === null || options === void 0 ? void 0 : options.LABEL
      });
      prevProd.definition.push(newNoneTerminal);
      return RECORDING_PHASE_TOKEN;
    }
  }
  function recordProd(prodConstructor, mainProdArg, occurrence, handleSep = false) {
    assertMethodIdxIsValid(occurrence);
    const prevProd = last(this.recordingProdStack);
    const grammarAction = isFunction(mainProdArg) ? mainProdArg : mainProdArg.DEF;
    const newProd = new prodConstructor({ definition: [], idx: occurrence });
    if (handleSep) {
      newProd.separator = mainProdArg.SEP;
    }
    if (has(mainProdArg, "MAX_LOOKAHEAD")) {
      newProd.maxLookahead = mainProdArg.MAX_LOOKAHEAD;
    }
    this.recordingProdStack.push(newProd);
    grammarAction.call(this);
    prevProd.definition.push(newProd);
    this.recordingProdStack.pop();
    return RECORDING_NULL_OBJECT;
  }
  function recordOrProd(mainProdArg, occurrence) {
    assertMethodIdxIsValid(occurrence);
    const prevProd = last(this.recordingProdStack);
    const hasOptions = isArray$1(mainProdArg) === false;
    const alts = hasOptions === false ? mainProdArg : mainProdArg.DEF;
    const newOrProd = new Alternation({
      definition: [],
      idx: occurrence,
      ignoreAmbiguities: hasOptions && mainProdArg.IGNORE_AMBIGUITIES === true
    });
    if (has(mainProdArg, "MAX_LOOKAHEAD")) {
      newOrProd.maxLookahead = mainProdArg.MAX_LOOKAHEAD;
    }
    const hasPredicates = some(alts, (currAlt) => isFunction(currAlt.GATE));
    newOrProd.hasPredicates = hasPredicates;
    prevProd.definition.push(newOrProd);
    forEach(alts, (currAlt) => {
      const currAltFlat = new Alternative({ definition: [] });
      newOrProd.definition.push(currAltFlat);
      if (has(currAlt, "IGNORE_AMBIGUITIES")) {
        currAltFlat.ignoreAmbiguities = currAlt.IGNORE_AMBIGUITIES;
      } else if (has(currAlt, "GATE")) {
        currAltFlat.ignoreAmbiguities = true;
      }
      this.recordingProdStack.push(currAltFlat);
      currAlt.ALT.call(this);
      this.recordingProdStack.pop();
    });
    return RECORDING_NULL_OBJECT;
  }
  function getIdxSuffix(idx) {
    return idx === 0 ? "" : `${idx}`;
  }
  function assertMethodIdxIsValid(idx) {
    if (idx < 0 || idx > MAX_METHOD_IDX) {
      const error = new Error(
        // The stack trace will contain all the needed details
        `Invalid DSL Method idx value: <${idx}>
	Idx value must be a none negative value smaller than ${MAX_METHOD_IDX + 1}`
      );
      error.KNOWN_RECORDER_ERROR = true;
      throw error;
    }
  }
  class PerformanceTracer {
    initPerformanceTracer(config) {
      if (has(config, "traceInitPerf")) {
        const userTraceInitPerf = config.traceInitPerf;
        const traceIsNumber = typeof userTraceInitPerf === "number";
        this.traceInitMaxIdent = traceIsNumber ? userTraceInitPerf : Infinity;
        this.traceInitPerf = traceIsNumber ? userTraceInitPerf > 0 : userTraceInitPerf;
      } else {
        this.traceInitMaxIdent = 0;
        this.traceInitPerf = DEFAULT_PARSER_CONFIG.traceInitPerf;
      }
      this.traceInitIndent = -1;
    }
    TRACE_INIT(phaseDesc, phaseImpl) {
      if (this.traceInitPerf === true) {
        this.traceInitIndent++;
        const indent = new Array(this.traceInitIndent + 1).join("	");
        if (this.traceInitIndent < this.traceInitMaxIdent) {
          console.log(`${indent}--> <${phaseDesc}>`);
        }
        const { time, value } = timer(phaseImpl);
        const traceMethod = time > 10 ? console.warn : console.log;
        if (this.traceInitIndent < this.traceInitMaxIdent) {
          traceMethod(`${indent}<-- <${phaseDesc}> time: ${time}ms`);
        }
        this.traceInitIndent--;
        return value;
      } else {
        return phaseImpl();
      }
    }
  }
  function applyMixins(derivedCtor, baseCtors) {
    baseCtors.forEach((baseCtor) => {
      const baseProto = baseCtor.prototype;
      Object.getOwnPropertyNames(baseProto).forEach((propName) => {
        if (propName === "constructor") {
          return;
        }
        const basePropDescriptor = Object.getOwnPropertyDescriptor(baseProto, propName);
        if (basePropDescriptor && (basePropDescriptor.get || basePropDescriptor.set)) {
          Object.defineProperty(derivedCtor.prototype, propName, basePropDescriptor);
        } else {
          derivedCtor.prototype[propName] = baseCtor.prototype[propName];
        }
      });
    });
  }
  const END_OF_FILE = createTokenInstance(EOF, "", NaN, NaN, NaN, NaN, NaN, NaN);
  Object.freeze(END_OF_FILE);
  const DEFAULT_PARSER_CONFIG = Object.freeze({
    recoveryEnabled: false,
    maxLookahead: 3,
    dynamicTokensEnabled: false,
    outputCst: true,
    errorMessageProvider: defaultParserErrorProvider,
    nodeLocationTracking: "none",
    traceInitPerf: false,
    skipValidations: false
  });
  const DEFAULT_RULE_CONFIG = Object.freeze({
    recoveryValueFunc: () => void 0,
    resyncEnabled: true
  });
  var ParserDefinitionErrorType;
  (function(ParserDefinitionErrorType2) {
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["INVALID_RULE_NAME"] = 0] = "INVALID_RULE_NAME";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["DUPLICATE_RULE_NAME"] = 1] = "DUPLICATE_RULE_NAME";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["INVALID_RULE_OVERRIDE"] = 2] = "INVALID_RULE_OVERRIDE";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["DUPLICATE_PRODUCTIONS"] = 3] = "DUPLICATE_PRODUCTIONS";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["UNRESOLVED_SUBRULE_REF"] = 4] = "UNRESOLVED_SUBRULE_REF";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["LEFT_RECURSION"] = 5] = "LEFT_RECURSION";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["NONE_LAST_EMPTY_ALT"] = 6] = "NONE_LAST_EMPTY_ALT";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["AMBIGUOUS_ALTS"] = 7] = "AMBIGUOUS_ALTS";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["CONFLICT_TOKENS_RULES_NAMESPACE"] = 8] = "CONFLICT_TOKENS_RULES_NAMESPACE";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["INVALID_TOKEN_NAME"] = 9] = "INVALID_TOKEN_NAME";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["NO_NON_EMPTY_LOOKAHEAD"] = 10] = "NO_NON_EMPTY_LOOKAHEAD";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["AMBIGUOUS_PREFIX_ALTS"] = 11] = "AMBIGUOUS_PREFIX_ALTS";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["TOO_MANY_ALTS"] = 12] = "TOO_MANY_ALTS";
    ParserDefinitionErrorType2[ParserDefinitionErrorType2["CUSTOM_LOOKAHEAD_VALIDATION"] = 13] = "CUSTOM_LOOKAHEAD_VALIDATION";
  })(ParserDefinitionErrorType || (ParserDefinitionErrorType = {}));
  class Parser {
    /**
     *  @deprecated use the **instance** method with the same name instead
     */
    static performSelfAnalysis(parserInstance) {
      throw Error(
        "The **static** `performSelfAnalysis` method has been deprecated.	\nUse the **instance** method with the same name instead."
      );
    }
    performSelfAnalysis() {
      this.TRACE_INIT("performSelfAnalysis", () => {
        let defErrorsMsgs;
        this.selfAnalysisDone = true;
        const className = this.className;
        this.TRACE_INIT("toFastProps", () => {
          toFastProperties(this);
        });
        this.TRACE_INIT("Grammar Recording", () => {
          try {
            this.enableRecording();
            forEach(this.definedRulesNames, (currRuleName) => {
              const wrappedRule = this[currRuleName];
              const originalGrammarAction = wrappedRule["originalGrammarAction"];
              let recordedRuleGast;
              this.TRACE_INIT(`${currRuleName} Rule`, () => {
                recordedRuleGast = this.topLevelRuleRecord(currRuleName, originalGrammarAction);
              });
              this.gastProductionsCache[currRuleName] = recordedRuleGast;
            });
          } finally {
            this.disableRecording();
          }
        });
        let resolverErrors = [];
        this.TRACE_INIT("Grammar Resolving", () => {
          resolverErrors = resolveGrammar({
            rules: values(this.gastProductionsCache)
          });
          this.definitionErrors = this.definitionErrors.concat(resolverErrors);
        });
        this.TRACE_INIT("Grammar Validations", () => {
          if (isEmpty(resolverErrors) && this.skipValidations === false) {
            const validationErrors = validateGrammar({
              rules: values(this.gastProductionsCache),
              tokenTypes: values(this.tokensMap),
              errMsgProvider: defaultGrammarValidatorErrorProvider,
              grammarName: className
            });
            const lookaheadValidationErrors = validateLookahead({
              lookaheadStrategy: this.lookaheadStrategy,
              rules: values(this.gastProductionsCache),
              tokenTypes: values(this.tokensMap),
              grammarName: className
            });
            this.definitionErrors = this.definitionErrors.concat(validationErrors, lookaheadValidationErrors);
          }
        });
        if (isEmpty(this.definitionErrors)) {
          if (this.recoveryEnabled) {
            this.TRACE_INIT("computeAllProdsFollows", () => {
              const allFollows = computeAllProdsFollows(values(this.gastProductionsCache));
              this.resyncFollows = allFollows;
            });
          }
          this.TRACE_INIT("ComputeLookaheadFunctions", () => {
            var _a, _b;
            (_b = (_a = this.lookaheadStrategy).initialize) === null || _b === void 0 ? void 0 : _b.call(_a, {
              rules: values(this.gastProductionsCache)
            });
            this.preComputeLookaheadFunctions(values(this.gastProductionsCache));
          });
        }
        if (!Parser.DEFER_DEFINITION_ERRORS_HANDLING && !isEmpty(this.definitionErrors)) {
          defErrorsMsgs = map(this.definitionErrors, (defError) => defError.message);
          throw new Error(
            `Parser Definition Errors detected:
 ${defErrorsMsgs.join("\n-------------------------------\n")}`
          );
        }
      });
    }
    constructor(tokenVocabulary, config) {
      this.definitionErrors = [];
      this.selfAnalysisDone = false;
      const that = this;
      that.initErrorHandler(config);
      that.initLexerAdapter();
      that.initLooksAhead(config);
      that.initRecognizerEngine(tokenVocabulary, config);
      that.initRecoverable(config);
      that.initTreeBuilder(config);
      that.initContentAssist();
      that.initGastRecorder(config);
      that.initPerformanceTracer(config);
      if (has(config, "ignoredIssues")) {
        throw new Error(
          "The <ignoredIssues> IParserConfig property has been deprecated.\n	Please use the <IGNORE_AMBIGUITIES> flag on the relevant DSL method instead.\n	See: https://chevrotain.io/docs/guide/resolving_grammar_errors.html#IGNORING_AMBIGUITIES\n	For further details."
        );
      }
      this.skipValidations = has(config, "skipValidations") ? config.skipValidations : DEFAULT_PARSER_CONFIG.skipValidations;
    }
  }
  Parser.DEFER_DEFINITION_ERRORS_HANDLING = false;
  applyMixins(Parser, [
    Recoverable,
    LooksAhead,
    TreeBuilder,
    LexerAdapter,
    RecognizerEngine,
    RecognizerApi,
    ErrorHandler,
    ContentAssist,
    GastRecorder,
    PerformanceTracer
  ]);
  class CstParser2 extends Parser {
    constructor(tokenVocabulary, config = DEFAULT_PARSER_CONFIG) {
      const configClone = clone(config);
      configClone.outputCst = true;
      super(tokenVocabulary, configClone);
    }
  }
  return { CstParser: CstParser2, Lexer: Lexer2, createToken: createToken2 };
})();
export {
  CstParser,
  Lexer,
  createToken
};
//# sourceMappingURL=chevrotain.js.map
