refractor/lang/graphql.js

Lightweight, robust, elegant virtual syntax highlighting using Prism

'use strict';

module.exports = graphql;
graphql.displayName = 'graphql';
graphql.aliases = [];
function graphql(Prism) {
  Prism.languages.graphql = {
    comment: /#.*/,
    string: {
      pattern: /"(?:\\.|[^\\"\r\n])*"/,
      greedy: true
    },
    number: /(?:\B-|\b)\d+(?:\.\d+)?(?:[eE][+-]?\d+)?\b/,
    boolean: /\b(?:true|false)\b/,
    variable: /\$[a-z_]\w*/i,
    directive: {
      pattern: /@[a-z_]\w*/i,
      alias: 'function'
    },
    'attr-name': /[a-z_]\w*(?=\s*:)/i,
    keyword: [
      {
        pattern: /(fragment\s+(?!on)[a-z_]\w*\s+|\.{3}\s*)on\b/,
        lookbehind: true
      },
      /\b(?:query|fragment|mutation)\b/
    ],
    operator: /!|=|\.{3}/,
    punctuation: /[!(){}\[\]:=,]/
  };
}