fix

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

@@ -0,0 +1,78 @@
+/*
+ Language: GraphQL
+ Author: John Foster (GH jf990), and others
+ Description: GraphQL is a query language for APIs
+ Category: web, common
+*/
+
+/** @type LanguageFn */
+function graphql(hljs) {
+  const regex = hljs.regex;
+  const GQL_NAME = /[_A-Za-z][_0-9A-Za-z]*/;
+  return {
+    name: "GraphQL",
+    aliases: [ "gql" ],
+    case_insensitive: true,
+    disableAutodetect: false,
+    keywords: {
+      keyword: [
+        "query",
+        "mutation",
+        "subscription",
+        "type",
+        "input",
+        "schema",
+        "directive",
+        "interface",
+        "union",
+        "scalar",
+        "fragment",
+        "enum",
+        "on"
+      ],
+      literal: [
+        "true",
+        "false",
+        "null"
+      ]
+    },
+    contains: [
+      hljs.HASH_COMMENT_MODE,
+      hljs.QUOTE_STRING_MODE,
+      hljs.NUMBER_MODE,
+      {
+        scope: "punctuation",
+        match: /[.]{3}/,
+        relevance: 0
+      },
+      {
+        scope: "punctuation",
+        begin: /[\!\(\)\:\=\[\]\{\|\}]{1}/,
+        relevance: 0
+      },
+      {
+        scope: "variable",
+        begin: /\$/,
+        end: /\W/,
+        excludeEnd: true,
+        relevance: 0
+      },
+      {
+        scope: "meta",
+        match: /@\w+/,
+        excludeEnd: true
+      },
+      {
+        scope: "symbol",
+        begin: regex.concat(GQL_NAME, regex.lookahead(/\s*:/)),
+        relevance: 0
+      }
+    ],
+    illegal: [
+      /[;<']/,
+      /BEGIN/
+    ]
+  };
+}
+
+module.exports = graphql;