source: imaps-frontend/node_modules/eslint/lib/rules/no-new-symbol.js

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Last change on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago

Update repo after prototype presentation

  • Property mode set to 100644
File size: 1.6 KB
Line 
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/** @type {import('../shared/types').Rule} */
13module.exports = {
14 meta: {
15 type: "problem",
16
17 docs: {
18 description: "Disallow `new` operators with the `Symbol` object",
19 recommended: true,
20 url: "https://eslint.org/docs/latest/rules/no-new-symbol"
21 },
22
23 schema: [],
24
25 messages: {
26 noNewSymbol: "`Symbol` cannot be called as a constructor."
27 }
28 },
29
30 create(context) {
31
32 const sourceCode = context.sourceCode;
33
34 return {
35 "Program:exit"(node) {
36 const globalScope = sourceCode.getScope(node);
37 const variable = globalScope.set.get("Symbol");
38
39 if (variable && variable.defs.length === 0) {
40 variable.references.forEach(ref => {
41 const idNode = ref.identifier;
42 const parent = idNode.parent;
43
44 if (parent && parent.type === "NewExpression" && parent.callee === idNode) {
45 context.report({
46 node: idNode,
47 messageId: "noNewSymbol"
48 });
49 }
50 });
51 }
52 }
53 };
54
55 }
56};
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