我有一个单元测试，正在检查页面上是否呈现了特定的项目。此单元测试失败，我得到以下错误：

Test suite failed to run

    ReferenceError: TextEncoder is not defined

       6 | import { unformatPhoneNumber } from '../../../utils/formatter';
       7 | import ReactHtmlParser from 'react-html-parser';
    >  8 | import DOMPurify from 'isomorphic-dompurify';

字符串
基于这个主题的其他stackoverflow问题，我在项目的根目录中添加了一个jest.setup.js文件和一个jest.setup.js文件。
这是我从Next.js示例存储库https://github.com/vercel/next.js/tree/canary/examples/with-jest-babel中复制的jest.js.js中的内容

// You can learn more about each option below in the Jest docs: https://jestjs.io/docs/configuration.

module.exports = {
  collectCoverageFrom: ['**/*.{js,jsx,ts,tsx}', '!**/*.d.ts', '!**/node_modules/**'],
  moduleNameMapper: {
    // Handle CSS imports (with CSS modules)
    // https://jestjs.io/docs/webpack#mocking-css-modules
    '^.+\\.module\\.(css|sass|scss)$': 'identity-obj-proxy',

    // Handle CSS imports (without CSS modules)
    '^.+\\.(css|sass|scss)$': '<rootDir>/__mocks__/styleMock.js',

    // Handle image imports
    // https://jestjs.io/docs/webpack#handling-static-assets
    '^.+\\.(png|jpg|jpeg|gif|webp|avif|ico|bmp|svg)$': `<rootDir>/__mocks__/fileMock.js`,

    // Handle module aliases
    '^@/components/(.*)$': '<rootDir>/components/$1',

    '^@/pages/(.*)$': '<rootDir>/pages/$1',
  },
  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
  testPathIgnorePatterns: ['<rootDir>/node_modules/', '<rootDir>/.next/'],
  transform: {
    // Use babel-jest to transpile tests with the next/babel preset
    // https://jestjs.io/docs/configuration#transform-objectstring-pathtotransformer--pathtotransformer-object
    '^.+\\.(js|jsx|ts|tsx)$': ['babel-jest', { presets: ['next/babel'] }],
  },
  transformIgnorePatterns: ['/node_modules/', '^.+\\.module\\.(css|sass|scss)$'],
  testEnvironment: 'jest-environment-jsdom',
};

型
这就是我在jest.setup.js中的内容，

// Optional: configure or set up a testing framework before each test.
// If you delete this file, remove `setupFilesAfterEnv` from `jest.config.js`

// Used for __tests__/testing-library.js
// Learn more: https://github.com/testing-library/jest-dom
import '@testing-library/jest-dom/extend-expect';
import { TextEncoder, TextDecoder } from 'util';
global.TextEncoder = TextEncoder;
global.TextDecoder = TextDecoder;

型
在添加了这个之后，我仍然得到同样的错误。我使用的是node v16.18.0。
这是一个Nextjs，Typescript，React应用程序。我还有一个jest-config.d.ts文件，其中包含以下内容：

declare const root: any;
export { root as rootDir };
export declare const setupFilesAfterEnv: string['<rootDir>/jest.setup.js'];
export declare const testMatch: string[];
export declare const testPathIgnorePatterns: string[];
export declare const coveragePathIgnorePatterns: string[];
export declare const coverageDirectory: string;
//# sourceMappingURL=jest-config.d.ts.map

型
我不知道我是否需要在这个文件中添加任何东西。