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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
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[d565449] | 1 | /**
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| 2 | * @fileoverview Rule to disallow use of the new operator with global non-constructor functions
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| 3 | * @author Sosuke Suzuki
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| 4 | */
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| 5 |
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| 6 | "use strict";
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| 7 |
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| 8 | //------------------------------------------------------------------------------
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| 9 | // Helpers
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| 10 | //------------------------------------------------------------------------------
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| 11 |
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| 12 | const nonConstructorGlobalFunctionNames = ["Symbol", "BigInt"];
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| 13 |
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| 14 | //------------------------------------------------------------------------------
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| 15 | // Rule Definition
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| 16 | //------------------------------------------------------------------------------
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| 17 |
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| 18 | /** @type {import('../shared/types').Rule} */
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| 19 | module.exports = {
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| 20 | meta: {
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| 21 | type: "problem",
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| 22 |
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| 23 | docs: {
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| 24 | description: "Disallow `new` operators with global non-constructor functions",
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| 25 | recommended: false,
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| 26 | url: "https://eslint.org/docs/latest/rules/no-new-native-nonconstructor"
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| 27 | },
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| 28 |
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| 29 | schema: [],
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| 30 |
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| 31 | messages: {
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| 32 | noNewNonconstructor: "`{{name}}` cannot be called as a constructor."
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| 33 | }
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| 34 | },
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| 35 |
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| 36 | create(context) {
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| 37 |
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| 38 | const sourceCode = context.sourceCode;
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| 39 |
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| 40 | return {
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| 41 | "Program:exit"(node) {
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| 42 | const globalScope = sourceCode.getScope(node);
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| 43 |
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| 44 | for (const nonConstructorName of nonConstructorGlobalFunctionNames) {
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| 45 | const variable = globalScope.set.get(nonConstructorName);
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| 46 |
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| 47 | if (variable && variable.defs.length === 0) {
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| 48 | variable.references.forEach(ref => {
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| 49 | const idNode = ref.identifier;
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| 50 | const parent = idNode.parent;
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| 51 |
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| 52 | if (parent && parent.type === "NewExpression" && parent.callee === idNode) {
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| 53 | context.report({
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| 54 | node: idNode,
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| 55 | messageId: "noNewNonconstructor",
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| 56 | data: { name: nonConstructorName }
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| 57 | });
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| 58 | }
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| 59 | });
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| 60 | }
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| 61 | }
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| 62 | }
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| 63 | };
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| 64 |
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| 65 | }
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| 66 | };
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