/** * @author Toru Nagashima * See LICENSE file in root directory for full license. */ "use strict" const { READ, ReferenceTracker } = require("eslint-utils") module.exports = { meta: { docs: { description: "disallow the subclassing of the built-in classes.", category: "ES2015", recommended: false, url: "http://mysticatea.github.io/eslint-plugin-es/rules/no-subclassing-builtins.html", }, fixable: null, messages: { forbidden: "ES2015 subclassing of '{{name}}' is forbidden.", }, schema: [], type: "problem", }, create(context) { return { "Program:exit"() { const tracker = new ReferenceTracker(context.getScope()) for (const { node, path } of tracker.iterateGlobalReferences({ Array: { [READ]: true }, Boolean: { [READ]: true }, Error: { [READ]: true }, RegExp: { [READ]: true }, Function: { [READ]: true }, Map: { [READ]: true }, Number: { [READ]: true }, Promise: { [READ]: true }, Set: { [READ]: true }, String: { [READ]: true }, })) { if ( node.parent.type.startsWith("Class") && node.parent.superClass === node ) { context.report({ node, messageId: "forbidden", data: { name: path.join(".") }, }) } } }, } }, }