source: imaps-frontend/node_modules/eslint/lib/rules/no-native-reassign.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: 3.0 KB
Line 
1/**
2 * @fileoverview Rule to disallow assignments to native objects or read-only global variables
3 * @author Ilya Volodin
4 * @deprecated in ESLint v3.3.0
5 */
6
7"use strict";
8
9//------------------------------------------------------------------------------
10// Rule Definition
11//------------------------------------------------------------------------------
12
13/** @type {import('../shared/types').Rule} */
14module.exports = {
15 meta: {
16 type: "suggestion",
17
18 docs: {
19 description: "Disallow assignments to native objects or read-only global variables",
20 recommended: false,
21 url: "https://eslint.org/docs/latest/rules/no-native-reassign"
22 },
23
24 deprecated: true,
25
26 replacedBy: ["no-global-assign"],
27
28 schema: [
29 {
30 type: "object",
31 properties: {
32 exceptions: {
33 type: "array",
34 items: { type: "string" },
35 uniqueItems: true
36 }
37 },
38 additionalProperties: false
39 }
40 ],
41
42 messages: {
43 nativeReassign: "Read-only global '{{name}}' should not be modified."
44 }
45 },
46
47 create(context) {
48 const config = context.options[0];
49 const exceptions = (config && config.exceptions) || [];
50 const sourceCode = context.sourceCode;
51
52 /**
53 * Reports write references.
54 * @param {Reference} reference A reference to check.
55 * @param {int} index The index of the reference in the references.
56 * @param {Reference[]} references The array that the reference belongs to.
57 * @returns {void}
58 */
59 function checkReference(reference, index, references) {
60 const identifier = reference.identifier;
61
62 if (reference.init === false &&
63 reference.isWrite() &&
64
65 /*
66 * Destructuring assignments can have multiple default value,
67 * so possibly there are multiple writeable references for the same identifier.
68 */
69 (index === 0 || references[index - 1].identifier !== identifier)
70 ) {
71 context.report({
72 node: identifier,
73 messageId: "nativeReassign",
74 data: identifier
75 });
76 }
77 }
78
79 /**
80 * Reports write references if a given variable is read-only builtin.
81 * @param {Variable} variable A variable to check.
82 * @returns {void}
83 */
84 function checkVariable(variable) {
85 if (variable.writeable === false && !exceptions.includes(variable.name)) {
86 variable.references.forEach(checkReference);
87 }
88 }
89
90 return {
91 Program(node) {
92 const globalScope = sourceCode.getScope(node);
93
94 globalScope.variables.forEach(checkVariable);
95 }
96 };
97 }
98};
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