.config/coc/extensions/node_modules/coc-prettier/node_modules/eslint/lib/rules/no-obj-calls.js

   1 /**
   2  * @fileoverview Rule to flag use of an object property of the global object (Math and JSON) as a function
   3  * @author James Allardice
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Requirements
  10 //------------------------------------------------------------------------------
  11
  12 const { CALL, ReferenceTracker } = require("eslint-utils");
  13
  14 //------------------------------------------------------------------------------
  15 // Helpers
  16 //------------------------------------------------------------------------------
  17
  18 const nonCallableGlobals = ["Atomics", "JSON", "Math", "Reflect"];
  19
  20 //------------------------------------------------------------------------------
  21 // Rule Definition
  22 //------------------------------------------------------------------------------
  23
  24 module.exports = {
  25     meta: {
  26         type: "problem",
  27
  28         docs: {
  29             description: "disallow calling global object properties as functions",
  30             category: "Possible Errors",
  31             recommended: true,
  32             url: "https://eslint.org/docs/rules/no-obj-calls"
  33         },
  34
  35         schema: [],
  36
  37         messages: {
  38             unexpectedCall: "'{{name}}' is not a function."
  39         }
  40     },
  41
  42     create(context) {
  43
  44         return {
  45             Program() {
  46                 const scope = context.getScope();
  47                 const tracker = new ReferenceTracker(scope);
  48                 const traceMap = {};
  49
  50                 for (const global of nonCallableGlobals) {
  51                     traceMap[global] = {
  52                         [CALL]: true
  53                     };
  54                 }
  55
  56                 for (const { node } of tracker.iterateGlobalReferences(traceMap)) {
  57                     context.report({ node, messageId: "unexpectedCall", data: { name: node.callee.name } });
  58                 }
  59             }
  60         };
  61     }
  62 };