/*
Language: JavaScript
Category: common, scripting
*/

function(hljs) {
  return {
    aliases: ['js'],
    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 class',
      literal:
        'true false null undefined NaN Infinity',
      built_in:
        'eval isFinite isNaN parseFloat parseInt decodeURI decodeURIComponent ' +
        'encodeURI encodeURIComponent escape unescape Object Function Boolean Error ' +
        'EvalError InternalError RangeError ReferenceError StopIteration SyntaxError ' +
        'TypeError URIError Number Math Date String RegExp Array Float32Array ' +
        'Float64Array Int16Array Int32Array Int8Array Uint16Array Uint32Array ' +
        'Uint8Array Uint8ClampedArray ArrayBuffer DataView JSON Intl arguments require ' +
        'module console window document'
    },
    contains: [
      {
        className: 'pi',
        relevance: 10,
        variants: [
          {begin: /^\s*('|")use strict('|")/},
          {begin: /^\s*('|")use asm('|")/}
        ]
      },
      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: />;/,
            relevance: 0,
            subLanguage: 'xml'
          }
        ],
        relevance: 0
      },
      {
        className: 'function',
        beginKeywords: 'function', end: /\{/, excludeEnd: true,
        contains: [
          hljs.inherit(hljs.TITLE_MODE, {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: /\[|%/
      },
      {
        begin: /\$[(.]/ // relevance booster for a pattern common to JS libs: `$(something)` and `$.something`
      },
      {
        begin: '\\.' + hljs.IDENT_RE, relevance: 0 // hack: prevents detection of keywords after dots
      }
    ]
  };
}
