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- /**
- * @fileoverview Rule to flag use of an object property of the global object (Math and JSON) as a function
- * @author James Allardice
- */
- "use strict";
- //------------------------------------------------------------------------------
- // Requirements
- //------------------------------------------------------------------------------
- const { CALL, ReferenceTracker } = require("eslint-utils");
- //------------------------------------------------------------------------------
- // Helpers
- //------------------------------------------------------------------------------
- const nonCallableGlobals = ["Atomics", "JSON", "Math", "Reflect"];
- //------------------------------------------------------------------------------
- // Rule Definition
- //------------------------------------------------------------------------------
- module.exports = {
- meta: {
- type: "problem",
- docs: {
- description: "disallow calling global object properties as functions",
- category: "Possible Errors",
- recommended: true,
- url: "https://eslint.org/docs/rules/no-obj-calls"
- },
- schema: [],
- messages: {
- unexpectedCall: "'{{name}}' is not a function."
- }
- },
- create(context) {
- return {
- Program() {
- const scope = context.getScope();
- const tracker = new ReferenceTracker(scope);
- const traceMap = {};
- for (const global of nonCallableGlobals) {
- traceMap[global] = {
- [CALL]: true
- };
- }
- for (const { node } of tracker.iterateGlobalReferences(traceMap)) {
- context.report({ node, messageId: "unexpectedCall", data: { name: node.callee.name } });
- }
- }
- };
- }
- };
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