.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/no-new-symbol.js

   1 /**
   2  * @fileoverview Rule to disallow use of the new operator with the `Symbol` object
   3  * @author Alberto Rodríguez
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Rule Definition
  10 //------------------------------------------------------------------------------
  11
  12 module.exports = {
  13     meta: {
  14         type: "problem",
  15
  16         docs: {
  17             description: "disallow `new` operators with the `Symbol` object",
  18             category: "ECMAScript 6",
  19             recommended: true,
  20             url: "https://eslint.org/docs/rules/no-new-symbol"
  21         },
  22
  23         schema: []
  24     },
  25
  26     create(context) {
  27
  28         return {
  29             "Program:exit"() {
  30                 const globalScope = context.getScope();
  31                 const variable = globalScope.set.get("Symbol");
  32
  33                 if (variable && variable.defs.length === 0) {
  34                     variable.references.forEach(ref => {
  35                         const node = ref.identifier;
  36
  37                         if (node.parent && node.parent.type === "NewExpression") {
  38                             context.report({ node, message: "`Symbol` cannot be called as a constructor." });
  39                         }
  40                     });
  41                 }
  42             }
  43         };
  44
  45     }
  46 };