/** * Copyright (c) Meta Platforms, Inc. and affiliates. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @emails react-core */ 'use strict'; const rule = require('../no-primitive-constructors'); const {RuleTester} = require('eslint'); const ruleTester = new RuleTester(); ruleTester.run('eslint-rules/no-primitive-constructors', rule, { valid: ['!!obj', '+string'], invalid: [ { code: 'Boolean(obj)', errors: [ { message: 'Do not use the Boolean constructor. To cast a value to a boolean, use double negation: !!value', }, ], }, { code: 'new String(obj)', errors: [ { message: "Do not use `new String()`. Use String() without new (or '' + value for perf-sensitive code).", }, ], }, { code: 'Number(string)', errors: [ { message: 'Do not use the Number constructor. To cast a value to a number, use the plus operator: +value', }, ], }, ], });