fix

book/node_modules/highlight.js/lib/languages/yaml.js

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+/*
+Language: YAML
+Description: Yet Another Markdown Language
+Author: Stefan Wienert <stwienert@gmail.com>
+Contributors: Carl Baxter <carl@cbax.tech>
+Requires: ruby.js
+Website: https://yaml.org
+Category: common, config
+*/
+function yaml(hljs) {
+  const LITERALS = 'true false yes no null';
+
+  // YAML spec allows non-reserved URI characters in tags.
+  const URI_CHARACTERS = '[\\w#;/?:@&=+$,.~*\'()[\\]]+';
+
+  // Define keys as starting with a word character
+  // ...containing word chars, spaces, colons, forward-slashes, hyphens and periods
+  // ...and ending with a colon followed immediately by a space, tab or newline.
+  // The YAML spec allows for much more than this, but this covers most use-cases.
+  const KEY = {
+    className: 'attr',
+    variants: [
+      // added brackets support and special char support
+      { begin: /[\w*@][\w*@ :()\./-]*:(?=[ \t]|$)/ },
+      { // double quoted keys - with brackets and special char support
+        begin: /"[\w*@][\w*@ :()\./-]*":(?=[ \t]|$)/ },
+      { // single quoted keys - with brackets and special char support
+        begin: /'[\w*@][\w*@ :()\./-]*':(?=[ \t]|$)/ },
+    ]
+  };
+  
+  const TEMPLATE_VARIABLES = {
+    className: 'template-variable',
+    variants: [
+      { // jinja templates Ansible
+        begin: /\{\{/,
+        end: /\}\}/
+      },
+      { // Ruby i18n
+        begin: /%\{/,
+        end: /\}/
+      }
+    ]
+  };
+
+  const SINGLE_QUOTE_STRING = {
+    className: 'string',
+    relevance: 0,
+    begin: /'/,
+    end: /'/,
+    contains: [
+      {
+        match: /''/,
+        scope: 'char.escape',
+        relevance: 0
+      }
+    ]
+  };
+
+  const STRING = {
+    className: 'string',
+    relevance: 0,
+    variants: [
+      {
+        begin: /"/,
+        end: /"/
+      },
+      { begin: /\S+/ }
+    ],
+    contains: [
+      hljs.BACKSLASH_ESCAPE,
+      TEMPLATE_VARIABLES
+    ]
+  };
+
+  // Strings inside of value containers (objects) can't contain braces,
+  // brackets, or commas
+  const CONTAINER_STRING = hljs.inherit(STRING, { variants: [
+    {
+      begin: /'/,
+      end: /'/,
+      contains: [
+        {
+          begin: /''/,
+          relevance: 0
+        }
+      ]
+    },
+    {
+      begin: /"/,
+      end: /"/
+    },
+    { begin: /[^\s,{}[\]]+/ }
+  ] });
+
+  const DATE_RE = '[0-9]{4}(-[0-9][0-9]){0,2}';
+  const TIME_RE = '([Tt \\t][0-9][0-9]?(:[0-9][0-9]){2})?';
+  const FRACTION_RE = '(\\.[0-9]*)?';
+  const ZONE_RE = '([ \\t])*(Z|[-+][0-9][0-9]?(:[0-9][0-9])?)?';
+  const TIMESTAMP = {
+    className: 'number',
+    begin: '\\b' + DATE_RE + TIME_RE + FRACTION_RE + ZONE_RE + '\\b'
+  };
+
+  const VALUE_CONTAINER = {
+    end: ',',
+    endsWithParent: true,
+    excludeEnd: true,
+    keywords: LITERALS,
+    relevance: 0
+  };
+  const OBJECT = {
+    begin: /\{/,
+    end: /\}/,
+    contains: [ VALUE_CONTAINER ],
+    illegal: '\\n',
+    relevance: 0
+  };
+  const ARRAY = {
+    begin: '\\[',
+    end: '\\]',
+    contains: [ VALUE_CONTAINER ],
+    illegal: '\\n',
+    relevance: 0
+  };
+
+  const MODES = [
+    KEY,
+    {
+      className: 'meta',
+      begin: '^---\\s*$',
+      relevance: 10
+    },
+    { // multi line string
+      // Blocks start with a | or > followed by a newline
+      //
+      // Indentation of subsequent lines must be the same to
+      // be considered part of the block
+      className: 'string',
+      begin: '[\\|>]([1-9]?[+-])?[ ]*\\n( +)[^ ][^\\n]*\\n(\\2[^\\n]+\\n?)*'
+    },
+    { // Ruby/Rails erb
+      begin: '<%[%=-]?',
+      end: '[%-]?%>',
+      subLanguage: 'ruby',
+      excludeBegin: true,
+      excludeEnd: true,
+      relevance: 0
+    },
+    { // named tags
+      className: 'type',
+      begin: '!\\w+!' + URI_CHARACTERS
+    },
+    // https://yaml.org/spec/1.2/spec.html#id2784064
+    { // verbatim tags
+      className: 'type',
+      begin: '!<' + URI_CHARACTERS + ">"
+    },
+    { // primary tags
+      className: 'type',
+      begin: '!' + URI_CHARACTERS
+    },
+    { // secondary tags
+      className: 'type',
+      begin: '!!' + URI_CHARACTERS
+    },
+    { // fragment id &ref
+      className: 'meta',
+      begin: '&' + hljs.UNDERSCORE_IDENT_RE + '$'
+    },
+    { // fragment reference *ref
+      className: 'meta',
+      begin: '\\*' + hljs.UNDERSCORE_IDENT_RE + '$'
+    },
+    { // array listing
+      className: 'bullet',
+      // TODO: remove |$ hack when we have proper look-ahead support
+      begin: '-(?=[ ]|$)',
+      relevance: 0
+    },
+    hljs.HASH_COMMENT_MODE,
+    {
+      beginKeywords: LITERALS,
+      keywords: { literal: LITERALS }
+    },
+    TIMESTAMP,
+    // numbers are any valid C-style number that
+    // sit isolated from other words
+    {
+      className: 'number',
+      begin: hljs.C_NUMBER_RE + '\\b',
+      relevance: 0
+    },
+    OBJECT,
+    ARRAY,
+    SINGLE_QUOTE_STRING,
+    STRING
+  ];
+
+  const VALUE_MODES = [ ...MODES ];
+  VALUE_MODES.pop();
+  VALUE_MODES.push(CONTAINER_STRING);
+  VALUE_CONTAINER.contains = VALUE_MODES;
+
+  return {
+    name: 'YAML',
+    case_insensitive: true,
+    aliases: [ 'yml' ],
+    contains: MODES
+  };
+}
+
+module.exports = yaml;