47 lines
1.4 KiB
JavaScript
47 lines
1.4 KiB
JavaScript
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/**
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* @fileoverview Disallow shadowing of NaN, undefined, and Infinity (ES5 section 15.1.1)
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* @author Michael Ficarra
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = {
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meta: {
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type: "suggestion",
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docs: {
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description: "disallow identifiers from shadowing restricted names",
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category: "Variables",
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recommended: false,
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url: "https://eslint.org/docs/rules/no-shadow-restricted-names"
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},
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schema: []
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},
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create(context) {
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const RESTRICTED = ["undefined", "NaN", "Infinity", "arguments", "eval"];
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return {
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"VariableDeclaration, :function, CatchClause"(node) {
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for (const variable of context.getDeclaredVariables(node)) {
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if (variable.defs.length > 0 && RESTRICTED.includes(variable.name)) {
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context.report({
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node: variable.defs[0].name,
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message: "Shadowing of global property '{{idName}}'.",
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data: {
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idName: variable.name
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}
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});
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}
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}
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}
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};
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}
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};
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