javascript.js

module.exports = function(hljs) {
  return {
    keywords: {
      keyword:
        'in if for while finally var new function do return void else break catch ' +
        'instanceof with throw case default try this switch continue typeof delete ' +
        'let yield const',
      literal:
        'true false null undefined NaN Infinity'
    },
    contains: [
      hljs.APOS_STRING_MODE,
      hljs.QUOTE_STRING_MODE,
      hljs.C_LINE_COMMENT_MODE,
      hljs.C_BLOCK_COMMENT_MODE,
      hljs.C_NUMBER_MODE,
      { // "value" container
        begin: '(' + hljs.RE_STARTERS_RE + '|\\b(case|return|throw)\\b)\\s*',
        keywords: 'return throw case',
        contains: [
          hljs.C_LINE_COMMENT_MODE,
          hljs.C_BLOCK_COMMENT_MODE,
          hljs.REGEXP_MODE,
          { // E4X
            begin: /</, end: />;/,
            subLanguage: 'xml'
          }
        ],
        relevance: 0
      },
      {
        className: 'function',
        beginWithKeyword: true, end: /{/,
        keywords: 'function',
        contains: [
          {
            className: 'title', begin: /[A-Za-z$_][0-9A-Za-z$_]*/
          },
          {
            className: 'params',
            begin: /\(/, end: /\)/,
            contains: [
              hljs.C_LINE_COMMENT_MODE,
              hljs.C_BLOCK_COMMENT_MODE
            ],
            illegal: /["'\(]/
          }
        ],
        illegal: /\[|%/
      }
    ]
  };
};