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Filename : javascript.js
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// CodeMirror, copyright (c) by Marijn Haverbeke and others

// Distributed under an MIT license: http://codemirror.net/LICENSE



(function(mod) {

  if (typeof exports == "object" && typeof module == "object") // CommonJS

    mod(require("../../lib/codemirror"));

  else if (typeof define == "function" && define.amd) // AMD

    define(["../../lib/codemirror"], mod);

  else // Plain browser env

    mod(CodeMirror);

})(function(CodeMirror) {

"use strict";



CodeMirror.defineMode("javascript", function(config, parserConfig) {

  var indentUnit = config.indentUnit;

  var statementIndent = parserConfig.statementIndent;

  var jsonldMode = parserConfig.jsonld;

  var jsonMode = parserConfig.json || jsonldMode;

  var isTS = parserConfig.typescript;

  var wordRE = parserConfig.wordCharacters || /[\w$\xa1-\uffff]/;



  // Tokenizer



  var keywords = function(){

    function kw(type) {return {type: type, style: "keyword"};}

    var A = kw("keyword a"), B = kw("keyword b"), C = kw("keyword c"), D = kw("keyword d");

    var operator = kw("operator"), atom = {type: "atom", style: "atom"};



    return {

      "if": kw("if"), "while": A, "with": A, "else": B, "do": B, "try": B, "finally": B,

      "return": D, "break": D, "continue": D, "new": kw("new"), "delete": C, "void": C, "throw": C,

      "debugger": kw("debugger"), "var": kw("var"), "const": kw("var"), "let": kw("var"),

      "function": kw("function"), "catch": kw("catch"),

      "for": kw("for"), "switch": kw("switch"), "case": kw("case"), "default": kw("default"),

      "in": operator, "typeof": operator, "instanceof": operator,

      "true": atom, "false": atom, "null": atom, "undefined": atom, "NaN": atom, "Infinity": atom,

      "this": kw("this"), "class": kw("class"), "super": kw("atom"),

      "yield": C, "export": kw("export"), "import": kw("import"), "extends": C,

      "await": C

    };

  }();



  var isOperatorChar = /[+\-*&%=<>!?|~^@]/;

  var isJsonldKeyword = /^@(context|id|value|language|type|container|list|set|reverse|index|base|vocab|graph)"/;



  function readRegexp(stream) {

    var escaped = false, next, inSet = false;

    while ((next = stream.next()) != null) {

      if (!escaped) {

        if (next == "/" && !inSet) return;

        if (next == "[") inSet = true;

        else if (inSet && next == "]") inSet = false;

      }

      escaped = !escaped && next == "\\";

    }

  }



  // Used as scratch variables to communicate multiple values without

  // consing up tons of objects.

  var type, content;

  function ret(tp, style, cont) {

    type = tp; content = cont;

    return style;

  }

  function tokenBase(stream, state) {

    var ch = stream.next();

    if (ch == '"' || ch == "'") {

      state.tokenize = tokenString(ch);

      return state.tokenize(stream, state);

    } else if (ch == "." && stream.match(/^\d+(?:[eE][+\-]?\d+)?/)) {

      return ret("number", "number");

    } else if (ch == "." && stream.match("..")) {

      return ret("spread", "meta");

    } else if (/[\[\]{}\(\),;\:\.]/.test(ch)) {

      return ret(ch);

    } else if (ch == "=" && stream.eat(">")) {

      return ret("=>", "operator");

    } else if (ch == "0" && stream.eat(/x/i)) {

      stream.eatWhile(/[\da-f]/i);

      return ret("number", "number");

    } else if (ch == "0" && stream.eat(/o/i)) {

      stream.eatWhile(/[0-7]/i);

      return ret("number", "number");

    } else if (ch == "0" && stream.eat(/b/i)) {

      stream.eatWhile(/[01]/i);

      return ret("number", "number");

    } else if (/\d/.test(ch)) {

      stream.match(/^\d*(?:\.\d*)?(?:[eE][+\-]?\d+)?/);

      return ret("number", "number");

    } else if (ch == "/") {

      if (stream.eat("*")) {

        state.tokenize = tokenComment;

        return tokenComment(stream, state);

      } else if (stream.eat("/")) {

        stream.skipToEnd();

        return ret("comment", "comment");

      } else if (expressionAllowed(stream, state, 1)) {

        readRegexp(stream);

        stream.match(/^\b(([gimyu])(?![gimyu]*\2))+\b/);

        return ret("regexp", "string-2");

      } else {

        stream.eat("=");

        return ret("operator", "operator", stream.current());

      }

    } else if (ch == "`") {

      state.tokenize = tokenQuasi;

      return tokenQuasi(stream, state);

    } else if (ch == "#") {

      stream.skipToEnd();

      return ret("error", "error");

    } else if (isOperatorChar.test(ch)) {

      if (ch != ">" || !state.lexical || state.lexical.type != ">") {

        if (stream.eat("=")) {

          if (ch == "!" || ch == "=") stream.eat("=")

        } else if (/[<>*+\-]/.test(ch)) {

          stream.eat(ch)

          if (ch == ">") stream.eat(ch)

        }

      }

      return ret("operator", "operator", stream.current());

    } else if (wordRE.test(ch)) {

      stream.eatWhile(wordRE);

      var word = stream.current()

      if (state.lastType != ".") {

        if (keywords.propertyIsEnumerable(word)) {

          var kw = keywords[word]

          return ret(kw.type, kw.style, word)

        }

        if (word == "async" && stream.match(/^(\s|\/\*.*?\*\/)*[\(\w]/, false))

          return ret("async", "keyword", word)

      }

      return ret("variable", "variable", word)

    }

  }



  function tokenString(quote) {

    return function(stream, state) {

      var escaped = false, next;

      if (jsonldMode && stream.peek() == "@" && stream.match(isJsonldKeyword)){

        state.tokenize = tokenBase;

        return ret("jsonld-keyword", "meta");

      }

      while ((next = stream.next()) != null) {

        if (next == quote && !escaped) break;

        escaped = !escaped && next == "\\";

      }

      if (!escaped) state.tokenize = tokenBase;

      return ret("string", "string");

    };

  }



  function tokenComment(stream, state) {

    var maybeEnd = false, ch;

    while (ch = stream.next()) {

      if (ch == "/" && maybeEnd) {

        state.tokenize = tokenBase;

        break;

      }

      maybeEnd = (ch == "*");

    }

    return ret("comment", "comment");

  }



  function tokenQuasi(stream, state) {

    var escaped = false, next;

    while ((next = stream.next()) != null) {

      if (!escaped && (next == "`" || next == "$" && stream.eat("{"))) {

        state.tokenize = tokenBase;

        break;

      }

      escaped = !escaped && next == "\\";

    }

    return ret("quasi", "string-2", stream.current());

  }



  var brackets = "([{}])";

  // This is a crude lookahead trick to try and notice that we're

  // parsing the argument patterns for a fat-arrow function before we

  // actually hit the arrow token. It only works if the arrow is on

  // the same line as the arguments and there's no strange noise

  // (comments) in between. Fallback is to only notice when we hit the

  // arrow, and not declare the arguments as locals for the arrow

  // body.

  function findFatArrow(stream, state) {

    if (state.fatArrowAt) state.fatArrowAt = null;

    var arrow = stream.string.indexOf("=>", stream.start);

    if (arrow < 0) return;



    if (isTS) { // Try to skip TypeScript return type declarations after the arguments

      var m = /:\s*(?:\w+(?:<[^>]*>|\[\])?|\{[^}]*\})\s*$/.exec(stream.string.slice(stream.start, arrow))

      if (m) arrow = m.index

    }



    var depth = 0, sawSomething = false;

    for (var pos = arrow - 1; pos >= 0; --pos) {

      var ch = stream.string.charAt(pos);

      var bracket = brackets.indexOf(ch);

      if (bracket >= 0 && bracket < 3) {

        if (!depth) { ++pos; break; }

        if (--depth == 0) { if (ch == "(") sawSomething = true; break; }

      } else if (bracket >= 3 && bracket < 6) {

        ++depth;

      } else if (wordRE.test(ch)) {

        sawSomething = true;

      } else if (/["'\/]/.test(ch)) {

        return;

      } else if (sawSomething && !depth) {

        ++pos;

        break;

      }

    }

    if (sawSomething && !depth) state.fatArrowAt = pos;

  }



  // Parser



  var atomicTypes = {"atom": true, "number": true, "variable": true, "string": true, "regexp": true, "this": true, "jsonld-keyword": true};



  function JSLexical(indented, column, type, align, prev, info) {

    this.indented = indented;

    this.column = column;

    this.type = type;

    this.prev = prev;

    this.info = info;

    if (align != null) this.align = align;

  }



  function inScope(state, varname) {

    for (var v = state.localVars; v; v = v.next)

      if (v.name == varname) return true;

    for (var cx = state.context; cx; cx = cx.prev) {

      for (var v = cx.vars; v; v = v.next)

        if (v.name == varname) return true;

    }

  }



  function parseJS(state, style, type, content, stream) {

    var cc = state.cc;

    // Communicate our context to the combinators.

    // (Less wasteful than consing up a hundred closures on every call.)

    cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc; cx.style = style;



    if (!state.lexical.hasOwnProperty("align"))

      state.lexical.align = true;



    while(true) {

      var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement;

      if (combinator(type, content)) {

        while(cc.length && cc[cc.length - 1].lex)

          cc.pop()();

        if (cx.marked) return cx.marked;

        if (type == "variable" && inScope(state, content)) return "variable-2";

        return style;

      }

    }

  }



  // Combinator utils



  var cx = {state: null, column: null, marked: null, cc: null};

  function pass() {

    for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);

  }

  function cont() {

    pass.apply(null, arguments);

    return true;

  }

  function register(varname) {

    function inList(list) {

      for (var v = list; v; v = v.next)

        if (v.name == varname) return true;

      return false;

    }

    var state = cx.state;

    cx.marked = "def";

    if (state.context) {

      if (inList(state.localVars)) return;

      state.localVars = {name: varname, next: state.localVars};

    } else {

      if (inList(state.globalVars)) return;

      if (parserConfig.globalVars)

        state.globalVars = {name: varname, next: state.globalVars};

    }

  }



  function isModifier(name) {

    return name == "public" || name == "private" || name == "protected" || name == "abstract" || name == "readonly"

  }



  // Combinators



  var defaultVars = {name: "this", next: {name: "arguments"}};

  function pushcontext() {

    cx.state.context = {prev: cx.state.context, vars: cx.state.localVars};

    cx.state.localVars = defaultVars;

  }

  function popcontext() {

    cx.state.localVars = cx.state.context.vars;

    cx.state.context = cx.state.context.prev;

  }

  function pushlex(type, info) {

    var result = function() {

      var state = cx.state, indent = state.indented;

      if (state.lexical.type == "stat") indent = state.lexical.indented;

      else for (var outer = state.lexical; outer && outer.type == ")" && outer.align; outer = outer.prev)

        indent = outer.indented;

      state.lexical = new JSLexical(indent, cx.stream.column(), type, null, state.lexical, info);

    };

    result.lex = true;

    return result;

  }

  function poplex() {

    var state = cx.state;

    if (state.lexical.prev) {

      if (state.lexical.type == ")")

        state.indented = state.lexical.indented;

      state.lexical = state.lexical.prev;

    }

  }

  poplex.lex = true;



  function expect(wanted) {

    function exp(type) {

      if (type == wanted) return cont();

      else if (wanted == ";") return pass();

      else return cont(exp);

    };

    return exp;

  }



  function statement(type, value) {

    if (type == "var") return cont(pushlex("vardef", value.length), vardef, expect(";"), poplex);

    if (type == "keyword a") return cont(pushlex("form"), parenExpr, statement, poplex);

    if (type == "keyword b") return cont(pushlex("form"), statement, poplex);

    if (type == "keyword d") return cx.stream.match(/^\s*$/, false) ? cont() : cont(pushlex("stat"), maybeexpression, expect(";"), poplex);

    if (type == "debugger") return cont(expect(";"));

    if (type == "{") return cont(pushlex("}"), block, poplex);

    if (type == ";") return cont();

    if (type == "if") {

      if (cx.state.lexical.info == "else" && cx.state.cc[cx.state.cc.length - 1] == poplex)

        cx.state.cc.pop()();

      return cont(pushlex("form"), parenExpr, statement, poplex, maybeelse);

    }

    if (type == "function") return cont(functiondef);

    if (type == "for") return cont(pushlex("form"), forspec, statement, poplex);

    if (type == "class" || (isTS && value == "interface")) { cx.marked = "keyword"; return cont(pushlex("form"), className, poplex); }

    if (type == "variable") {

      if (isTS && value == "type") {

        cx.marked = "keyword"

        return cont(typeexpr, expect("operator"), typeexpr, expect(";"));

      } else if (isTS && value == "declare") {

        cx.marked = "keyword"

        return cont(statement)

      } else if (isTS && (value == "module" || value == "enum") && cx.stream.match(/^\s*\w/, false)) {

        cx.marked = "keyword"

        return cont(pushlex("form"), pattern, expect("{"), pushlex("}"), block, poplex, poplex)

      } else if (isTS && value == "namespace") {

        cx.marked = "keyword"

        return cont(pushlex("form"), expression, block, poplex)

      } else {

        return cont(pushlex("stat"), maybelabel);

      }

    }

    if (type == "switch") return cont(pushlex("form"), parenExpr, expect("{"), pushlex("}", "switch"),

                                      block, poplex, poplex);

    if (type == "case") return cont(expression, expect(":"));

    if (type == "default") return cont(expect(":"));

    if (type == "catch") return cont(pushlex("form"), pushcontext, expect("("), funarg, expect(")"),

                                     statement, poplex, popcontext);

    if (type == "export") return cont(pushlex("stat"), afterExport, poplex);

    if (type == "import") return cont(pushlex("stat"), afterImport, poplex);

    if (type == "async") return cont(statement)

    if (value == "@") return cont(expression, statement)

    return pass(pushlex("stat"), expression, expect(";"), poplex);

  }

  function expression(type, value) {

    return expressionInner(type, value, false);

  }

  function expressionNoComma(type, value) {

    return expressionInner(type, value, true);

  }

  function parenExpr(type) {

    if (type != "(") return pass()

    return cont(pushlex(")"), expression, expect(")"), poplex)

  }

  function expressionInner(type, value, noComma) {

    if (cx.state.fatArrowAt == cx.stream.start) {

      var body = noComma ? arrowBodyNoComma : arrowBody;

      if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, expect("=>"), body, popcontext);

      else if (type == "variable") return pass(pushcontext, pattern, expect("=>"), body, popcontext);

    }



    var maybeop = noComma ? maybeoperatorNoComma : maybeoperatorComma;

    if (atomicTypes.hasOwnProperty(type)) return cont(maybeop);

    if (type == "function") return cont(functiondef, maybeop);

    if (type == "class" || (isTS && value == "interface")) { cx.marked = "keyword"; return cont(pushlex("form"), classExpression, poplex); }

    if (type == "keyword c" || type == "async") return cont(noComma ? expressionNoComma : expression);

    if (type == "(") return cont(pushlex(")"), maybeexpression, expect(")"), poplex, maybeop);

    if (type == "operator" || type == "spread") return cont(noComma ? expressionNoComma : expression);

    if (type == "[") return cont(pushlex("]"), arrayLiteral, poplex, maybeop);

    if (type == "{") return contCommasep(objprop, "}", null, maybeop);

    if (type == "quasi") return pass(quasi, maybeop);

    if (type == "new") return cont(maybeTarget(noComma));

    return cont();

  }

  function maybeexpression(type) {

    if (type.match(/[;\}\)\],]/)) return pass();

    return pass(expression);

  }



  function maybeoperatorComma(type, value) {

    if (type == ",") return cont(expression);

    return maybeoperatorNoComma(type, value, false);

  }

  function maybeoperatorNoComma(type, value, noComma) {

    var me = noComma == false ? maybeoperatorComma : maybeoperatorNoComma;

    var expr = noComma == false ? expression : expressionNoComma;

    if (type == "=>") return cont(pushcontext, noComma ? arrowBodyNoComma : arrowBody, popcontext);

    if (type == "operator") {

      if (/\+\+|--/.test(value) || isTS && value == "!") return cont(me);

      if (isTS && value == "<" && cx.stream.match(/^([^>]|<.*?>)*>\s*\(/, false))

        return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, me);

      if (value == "?") return cont(expression, expect(":"), expr);

      return cont(expr);

    }

    if (type == "quasi") { return pass(quasi, me); }

    if (type == ";") return;

    if (type == "(") return contCommasep(expressionNoComma, ")", "call", me);

    if (type == ".") return cont(property, me);

    if (type == "[") return cont(pushlex("]"), maybeexpression, expect("]"), poplex, me);

    if (isTS && value == "as") { cx.marked = "keyword"; return cont(typeexpr, me) }

    if (type == "regexp") {

      cx.state.lastType = cx.marked = "operator"

      cx.stream.backUp(cx.stream.pos - cx.stream.start - 1)

      return cont(expr)

    }

  }

  function quasi(type, value) {

    if (type != "quasi") return pass();

    if (value.slice(value.length - 2) != "${") return cont(quasi);

    return cont(expression, continueQuasi);

  }

  function continueQuasi(type) {

    if (type == "}") {

      cx.marked = "string-2";

      cx.state.tokenize = tokenQuasi;

      return cont(quasi);

    }

  }

  function arrowBody(type) {

    findFatArrow(cx.stream, cx.state);

    return pass(type == "{" ? statement : expression);

  }

  function arrowBodyNoComma(type) {

    findFatArrow(cx.stream, cx.state);

    return pass(type == "{" ? statement : expressionNoComma);

  }

  function maybeTarget(noComma) {

    return function(type) {

      if (type == ".") return cont(noComma ? targetNoComma : target);

      else if (type == "variable" && isTS) return cont(maybeTypeArgs, noComma ? maybeoperatorNoComma : maybeoperatorComma)

      else return pass(noComma ? expressionNoComma : expression);

    };

  }

  function target(_, value) {

    if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorComma); }

  }

  function targetNoComma(_, value) {

    if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorNoComma); }

  }

  function maybelabel(type) {

    if (type == ":") return cont(poplex, statement);

    return pass(maybeoperatorComma, expect(";"), poplex);

  }

  function property(type) {

    if (type == "variable") {cx.marked = "property"; return cont();}

  }

  function objprop(type, value) {

    if (type == "async") {

      cx.marked = "property";

      return cont(objprop);

    } else if (type == "variable" || cx.style == "keyword") {

      cx.marked = "property";

      if (value == "get" || value == "set") return cont(getterSetter);

      var m // Work around fat-arrow-detection complication for detecting typescript typed arrow params

      if (isTS && cx.state.fatArrowAt == cx.stream.start && (m = cx.stream.match(/^\s*:\s*/, false)))

        cx.state.fatArrowAt = cx.stream.pos + m[0].length

      return cont(afterprop);

    } else if (type == "number" || type == "string") {

      cx.marked = jsonldMode ? "property" : (cx.style + " property");

      return cont(afterprop);

    } else if (type == "jsonld-keyword") {

      return cont(afterprop);

    } else if (isTS && isModifier(value)) {

      cx.marked = "keyword"

      return cont(objprop)

    } else if (type == "[") {

      return cont(expression, maybetype, expect("]"), afterprop);

    } else if (type == "spread") {

      return cont(expressionNoComma, afterprop);

    } else if (value == "*") {

      cx.marked = "keyword";

      return cont(objprop);

    } else if (type == ":") {

      return pass(afterprop)

    }

  }

  function getterSetter(type) {

    if (type != "variable") return pass(afterprop);

    cx.marked = "property";

    return cont(functiondef);

  }

  function afterprop(type) {

    if (type == ":") return cont(expressionNoComma);

    if (type == "(") return pass(functiondef);

  }

  function commasep(what, end, sep) {

    function proceed(type, value) {

      if (sep ? sep.indexOf(type) > -1 : type == ",") {

        var lex = cx.state.lexical;

        if (lex.info == "call") lex.pos = (lex.pos || 0) + 1;

        return cont(function(type, value) {

          if (type == end || value == end) return pass()

          return pass(what)

        }, proceed);

      }

      if (type == end || value == end) return cont();

      return cont(expect(end));

    }

    return function(type, value) {

      if (type == end || value == end) return cont();

      return pass(what, proceed);

    };

  }

  function contCommasep(what, end, info) {

    for (var i = 3; i < arguments.length; i++)

      cx.cc.push(arguments[i]);

    return cont(pushlex(end, info), commasep(what, end), poplex);

  }

  function block(type) {

    if (type == "}") return cont();

    return pass(statement, block);

  }

  function maybetype(type, value) {

    if (isTS) {

      if (type == ":") return cont(typeexpr);

      if (value == "?") return cont(maybetype);

    }

  }

  function mayberettype(type) {

    if (isTS && type == ":") {

      if (cx.stream.match(/^\s*\w+\s+is\b/, false)) return cont(expression, isKW, typeexpr)

      else return cont(typeexpr)

    }

  }

  function isKW(_, value) {

    if (value == "is") {

      cx.marked = "keyword"

      return cont()

    }

  }

  function typeexpr(type, value) {

    if (type == "variable" || value == "void") {

      if (value == "keyof") {

        cx.marked = "keyword"

        return cont(typeexpr)

      } else {

        cx.marked = "type"

        return cont(afterType)

      }

    }

    if (type == "string" || type == "number" || type == "atom") return cont(afterType);

    if (type == "[") return cont(pushlex("]"), commasep(typeexpr, "]", ","), poplex, afterType)

    if (type == "{") return cont(pushlex("}"), commasep(typeprop, "}", ",;"), poplex, afterType)

    if (type == "(") return cont(commasep(typearg, ")"), maybeReturnType)

  }

  function maybeReturnType(type) {

    if (type == "=>") return cont(typeexpr)

  }

  function typeprop(type, value) {

    if (type == "variable" || cx.style == "keyword") {

      cx.marked = "property"

      return cont(typeprop)

    } else if (value == "?") {

      return cont(typeprop)

    } else if (type == ":") {

      return cont(typeexpr)

    } else if (type == "[") {

      return cont(expression, maybetype, expect("]"), typeprop)

    }

  }

  function typearg(type) {

    if (type == "variable") return cont(typearg)

    else if (type == ":") return cont(typeexpr)

  }

  function afterType(type, value) {

    if (value == "<") return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, afterType)

    if (value == "|" || type == ".") return cont(typeexpr)

    if (type == "[") return cont(expect("]"), afterType)

    if (value == "extends" || value == "implements") { cx.marked = "keyword"; return cont(typeexpr) }

  }

  function maybeTypeArgs(_, value) {

    if (value == "<") return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, afterType)

  }

  function typeparam() {

    return pass(typeexpr, maybeTypeDefault)

  }

  function maybeTypeDefault(_, value) {

    if (value == "=") return cont(typeexpr)

  }

  function vardef() {

    return pass(pattern, maybetype, maybeAssign, vardefCont);

  }

  function pattern(type, value) {

    if (isTS && isModifier(value)) { cx.marked = "keyword"; return cont(pattern) }

    if (type == "variable") { register(value); return cont(); }

    if (type == "spread") return cont(pattern);

    if (type == "[") return contCommasep(pattern, "]");

    if (type == "{") return contCommasep(proppattern, "}");

  }

  function proppattern(type, value) {

    if (type == "variable" && !cx.stream.match(/^\s*:/, false)) {

      register(value);

      return cont(maybeAssign);

    }

    if (type == "variable") cx.marked = "property";

    if (type == "spread") return cont(pattern);

    if (type == "}") return pass();

    return cont(expect(":"), pattern, maybeAssign);

  }

  function maybeAssign(_type, value) {

    if (value == "=") return cont(expressionNoComma);

  }

  function vardefCont(type) {

    if (type == ",") return cont(vardef);

  }

  function maybeelse(type, value) {

    if (type == "keyword b" && value == "else") return cont(pushlex("form", "else"), statement, poplex);

  }

  function forspec(type) {

    if (type == "(") return cont(pushlex(")"), forspec1, expect(")"), poplex);

  }

  function forspec1(type) {

    if (type == "var") return cont(vardef, expect(";"), forspec2);

    if (type == ";") return cont(forspec2);

    if (type == "variable") return cont(formaybeinof);

    return pass(expression, expect(";"), forspec2);

  }

  function formaybeinof(_type, value) {

    if (value == "in" || value == "of") { cx.marked = "keyword"; return cont(expression); }

    return cont(maybeoperatorComma, forspec2);

  }

  function forspec2(type, value) {

    if (type == ";") return cont(forspec3);

    if (value == "in" || value == "of") { cx.marked = "keyword"; return cont(expression); }

    return pass(expression, expect(";"), forspec3);

  }

  function forspec3(type) {

    if (type != ")") cont(expression);

  }

  function functiondef(type, value) {

    if (value == "*") {cx.marked = "keyword"; return cont(functiondef);}

    if (type == "variable") {register(value); return cont(functiondef);}

    if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, mayberettype, statement, popcontext);

    if (isTS && value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, functiondef)

  }

  function funarg(type, value) {

    if (value == "@") cont(expression, funarg)

    if (type == "spread") return cont(funarg);

    if (isTS && isModifier(value)) { cx.marked = "keyword"; return cont(funarg); }

    return pass(pattern, maybetype, maybeAssign);

  }

  function classExpression(type, value) {

    // Class expressions may have an optional name.

    if (type == "variable") return className(type, value);

    return classNameAfter(type, value);

  }

  function className(type, value) {

    if (type == "variable") {register(value); return cont(classNameAfter);}

  }

  function classNameAfter(type, value) {

    if (value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, classNameAfter)

    if (value == "extends" || value == "implements" || (isTS && type == ","))

      return cont(isTS ? typeexpr : expression, classNameAfter);

    if (type == "{") return cont(pushlex("}"), classBody, poplex);

  }

  function classBody(type, value) {

    if (type == "async" ||

        (type == "variable" &&

         (value == "static" || value == "get" || value == "set" || (isTS && isModifier(value))) &&

         cx.stream.match(/^\s+[\w$\xa1-\uffff]/, false))) {

      cx.marked = "keyword";

      return cont(classBody);

    }

    if (type == "variable" || cx.style == "keyword") {

      cx.marked = "property";

      return cont(isTS ? classfield : functiondef, classBody);

    }

    if (type == "[")

      return cont(expression, maybetype, expect("]"), isTS ? classfield : functiondef, classBody)

    if (value == "*") {

      cx.marked = "keyword";

      return cont(classBody);

    }

    if (type == ";") return cont(classBody);

    if (type == "}") return cont();

    if (value == "@") return cont(expression, classBody)

  }

  function classfield(type, value) {

    if (value == "?") return cont(classfield)

    if (type == ":") return cont(typeexpr, maybeAssign)

    if (value == "=") return cont(expressionNoComma)

    return pass(functiondef)

  }

  function afterExport(type, value) {

    if (value == "*") { cx.marked = "keyword"; return cont(maybeFrom, expect(";")); }

    if (value == "default") { cx.marked = "keyword"; return cont(expression, expect(";")); }

    if (type == "{") return cont(commasep(exportField, "}"), maybeFrom, expect(";"));

    return pass(statement);

  }

  function exportField(type, value) {

    if (value == "as") { cx.marked = "keyword"; return cont(expect("variable")); }

    if (type == "variable") return pass(expressionNoComma, exportField);

  }

  function afterImport(type) {

    if (type == "string") return cont();

    return pass(importSpec, maybeMoreImports, maybeFrom);

  }

  function importSpec(type, value) {

    if (type == "{") return contCommasep(importSpec, "}");

    if (type == "variable") register(value);

    if (value == "*") cx.marked = "keyword";

    return cont(maybeAs);

  }

  function maybeMoreImports(type) {

    if (type == ",") return cont(importSpec, maybeMoreImports)

  }

  function maybeAs(_type, value) {

    if (value == "as") { cx.marked = "keyword"; return cont(importSpec); }

  }

  function maybeFrom(_type, value) {

    if (value == "from") { cx.marked = "keyword"; return cont(expression); }

  }

  function arrayLiteral(type) {

    if (type == "]") return cont();

    return pass(commasep(expressionNoComma, "]"));

  }



  function isContinuedStatement(state, textAfter) {

    return state.lastType == "operator" || state.lastType == "," ||

      isOperatorChar.test(textAfter.charAt(0)) ||

      /[,.]/.test(textAfter.charAt(0));

  }



  function expressionAllowed(stream, state, backUp) {

    return state.tokenize == tokenBase &&

      /^(?:operator|sof|keyword [bcd]|case|new|export|default|spread|[\[{}\(,;:]|=>)$/.test(state.lastType) ||

      (state.lastType == "quasi" && /\{\s*$/.test(stream.string.slice(0, stream.pos - (backUp || 0))))

  }



  // Interface



  return {

    startState: function(basecolumn) {

      var state = {

        tokenize: tokenBase,

        lastType: "sof",

        cc: [],

        lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false),

        localVars: parserConfig.localVars,

        context: parserConfig.localVars && {vars: parserConfig.localVars},

        indented: basecolumn || 0

      };

      if (parserConfig.globalVars && typeof parserConfig.globalVars == "object")

        state.globalVars = parserConfig.globalVars;

      return state;

    },



    token: function(stream, state) {

      if (stream.sol()) {

        if (!state.lexical.hasOwnProperty("align"))

          state.lexical.align = false;

        state.indented = stream.indentation();

        findFatArrow(stream, state);

      }

      if (state.tokenize != tokenComment && stream.eatSpace()) return null;

      var style = state.tokenize(stream, state);

      if (type == "comment") return style;

      state.lastType = type == "operator" && (content == "++" || content == "--") ? "incdec" : type;

      return parseJS(state, style, type, content, stream);

    },



    indent: function(state, textAfter) {

      if (state.tokenize == tokenComment) return CodeMirror.Pass;

      if (state.tokenize != tokenBase) return 0;

      var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical, top

      // Kludge to prevent 'maybelse' from blocking lexical scope pops

      if (!/^\s*else\b/.test(textAfter)) for (var i = state.cc.length - 1; i >= 0; --i) {

        var c = state.cc[i];

        if (c == poplex) lexical = lexical.prev;

        else if (c != maybeelse) break;

      }

      while ((lexical.type == "stat" || lexical.type == "form") &&

             (firstChar == "}" || ((top = state.cc[state.cc.length - 1]) &&

                                   (top == maybeoperatorComma || top == maybeoperatorNoComma) &&

                                   !/^[,\.=+\-*:?[\(]/.test(textAfter))))

        lexical = lexical.prev;

      if (statementIndent && lexical.type == ")" && lexical.prev.type == "stat")

        lexical = lexical.prev;

      var type = lexical.type, closing = firstChar == type;



      if (type == "vardef") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? lexical.info + 1 : 0);

      else if (type == "form" && firstChar == "{") return lexical.indented;

      else if (type == "form") return lexical.indented + indentUnit;

      else if (type == "stat")

        return lexical.indented + (isContinuedStatement(state, textAfter) ? statementIndent || indentUnit : 0);

      else if (lexical.info == "switch" && !closing && parserConfig.doubleIndentSwitch != false)

        return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit);

      else if (lexical.align) return lexical.column + (closing ? 0 : 1);

      else return lexical.indented + (closing ? 0 : indentUnit);

    },



    electricInput: /^\s*(?:case .*?:|default:|\{|\})$/,

    blockCommentStart: jsonMode ? null : "/*",

    blockCommentEnd: jsonMode ? null : "*/",

    blockCommentContinue: jsonMode ? null : " * ",

    lineComment: jsonMode ? null : "//",

    fold: "brace",

    closeBrackets: "()[]{}''\"\"``",



    helperType: jsonMode ? "json" : "javascript",

    jsonldMode: jsonldMode,

    jsonMode: jsonMode,



    expressionAllowed: expressionAllowed,



    skipExpression: function(state) {

      var top = state.cc[state.cc.length - 1]

      if (top == expression || top == expressionNoComma) state.cc.pop()

    }

  };

});



CodeMirror.registerHelper("wordChars", "javascript", /[\w$]/);



CodeMirror.defineMIME("text/javascript", "javascript");

CodeMirror.defineMIME("text/ecmascript", "javascript");

CodeMirror.defineMIME("application/javascript", "javascript");

CodeMirror.defineMIME("application/x-javascript", "javascript");

CodeMirror.defineMIME("application/ecmascript", "javascript");

CodeMirror.defineMIME("application/json", {name: "javascript", json: true});

CodeMirror.defineMIME("application/x-json", {name: "javascript", json: true});

CodeMirror.defineMIME("application/ld+json", {name: "javascript", jsonld: true});

CodeMirror.defineMIME("text/typescript", { name: "javascript", typescript: true });

CodeMirror.defineMIME("application/typescript", { name: "javascript", typescript: true });



});