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55 lines
1.5 KiB
JavaScript
55 lines
1.5 KiB
JavaScript
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/**
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* @fileoverview Rule to disallow use of the new operator with the `Symbol` object
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* @author Alberto Rodríguez
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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: "problem",
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docs: {
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description: "disallow `new` operators with the `Symbol` object",
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category: "ECMAScript 6",
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recommended: true,
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url: "https://eslint.org/docs/rules/no-new-symbol"
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},
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schema: [],
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messages: {
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noNewSymbol: "`Symbol` cannot be called as a constructor."
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}
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},
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create(context) {
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return {
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"Program:exit"() {
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const globalScope = context.getScope();
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const variable = globalScope.set.get("Symbol");
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if (variable && variable.defs.length === 0) {
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variable.references.forEach(ref => {
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const node = ref.identifier;
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const parent = node.parent;
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if (parent && parent.type === "NewExpression" && parent.callee === node) {
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context.report({
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node,
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messageId: "noNewSymbol"
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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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