使用jest-runner-tsc实现TypeScript编译器与Jest测试

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资源摘要信息:"estTypeScript编译器的Jest运行程序-JavaScript开发" 知识点: 1. Jest框架: Jest是一个JavaScript单元测试框架,主要用于React应用的测试,但也可用于测试其他JavaScript代码。它易于使用,且具备良好的性能和丰富的功能,比如模拟功能、断言库、测试运行器等。Jest由Facebook开发并维护,支持自动并行测试,提供快照测试和代码覆盖率报告,也是Facebook内部广泛使用的测试框架。 2. TypeScript: TypeScript是JavaScript的一个超集,由微软开发,提供类型系统和对ES6+的现代化支持。它将静态类型定义集成到JavaScript代码中,以便在编译阶段进行类型检查,提高开发效率和代码质量。TypeScript最终会被编译成普通的JavaScript代码,以便在浏览器或Node.js环境中运行。 3. jest-runner-tsc: 该模块是Jest的一个运行器,允许Jest在测试运行之前对TypeScript代码进行编译。它提供了一种方便的方式,在进行单元测试前确保TypeScript代码被正确编译为JavaScript。通过安装和配置jest-runner-tsc,可以在Jest的测试配置中指定要编译的TypeScript文件,这样在Jest运行测试之前会自动编译这些文件。 4. npm (Node Package Manager): npm是Node.js的包管理工具,用于在Node.js项目中下载和安装第三方包。通过npm命令,开发者可以轻松地添加、删除、更新项目依赖包。npm的使用通常伴随一个名为package.json的配置文件,它记录了项目的名称、版本、依赖关系等信息。 5. cosomiconfig: cosomiconfig是一个配置加载库,它允许开发者将配置数据以多种方式存储,比如package.json、.cosmiconfig文件或.js/.json/.yaml文件等。通过cosmiconfig,可以统一项目中工具的配置读取方式,使得配置管理更为方便和集中。 6. 配置文件: 在本资源中提到了几种配置文件,分别是jest.tsc.config.js、jest-runner-tsc.config.js以及.jest-runner-tscrc。这些配置文件都是在Jest框架中定义测试配置的方式,用于说明如何运行测试、需要编译哪些文件、使用哪些测试匹配器等。它们可以根据项目的具体需要进行定制,以适应不同的测试需求。 7. moduleFileExtensions: 此为Jest配置项,用于定义模块文件的扩展名列表。在这个例子中,它被设置为['js', 'ts', 'tsx'],意味着Jest会识别并处理JavaScript、TypeScript和TypeScript JSX文件。 8. testMatch: 另一个Jest配置项,用于定义匹配测试文件的模式。在此配置中,['**/*.ts']表示Jest会匹配项目中所有以.ts结尾的文件作为测试文件。 9. displayName: 这是Jest运行器的配置项,用于为运行器设置一个展示名称,这里设置为'tsc',可能用于识别当前运行器的特定配置。 通过这些知识点,开发者可以了解如何在使用Jest进行JavaScript开发的同时,整合TypeScript代码的编译过程,确保在测试阶段能够正确处理TypeScript文件。了解这些知识点后,开发者应该能够对Jest和TypeScript进行更加有效的配置和使用。

npm WARN deprecated source-map-url@0.4.1: See https://github.com/lydell/source-map-url#deprecated npm WARN deprecated stable@0.1.8: Modern JS already guarantees Array#sort() is a stable sort, so this library is deprecated. See the compatibility table on MDN: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort#browser_compatibility npm WARN deprecated consolidate@0.15.1: Please upgrade to consolidate v1.0.0+ as it has been modernized with several long-awaited fixes implemented. Maintenance is supported by Forward Email at https://forwardemail.net ; follow/watch https://github.com/ladjs/consolidate for updates and release changelog npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprecated npm WARN deprecated source-map-resolve@0.5.3: See https://github.com/lydell/source-map-resolve#deprecated npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated npm WARN deprecated w3c-hr-time@1.0.2: Use your platform's native performance.now() and performance.timeOrigin. npm WARN deprecated microargs@1.1.2: This project has been renamed to @pawelgalazka/cli-args. Install using @pawelgalazka/cli-args instead npm WARN deprecated microcli@1.3.3: This project has been renamed to @pawelgalazka/cli . Install using @pawelgalazka/cli instead npm WARN deprecated @babel/polyfill@7.12.1: 🚨 This package has been deprecated in favor of separate inclusion of a polyfill and regenerator-runtime (when needed). See the @babel/polyfill docs (https://babeljs.io/docs/en/babel-polyfill) for more information. npm WARN tarball tarball data for @jest/types@http://10.129.3.105:8081/repository/npm-all/@jest/types/-/types-27.5.1.tgz (sha512-Cx46iJ9QpwQTjIdq5VJu2QTMMs3QlEjI0x1QbBP5W1+nMzyc2XmimiRR/CbX9TO0cPTeUlxWMOu8mslYsJ8DEw==) seems to be corrupted. Trying again. npm WARN deprecated runjs@4.4.2: This project has been renamed to 'tasksfile'. Install using 'npm install tasksfile' instead. npm WARN tarball tarball data for @jest/console@http://10.129.3.105:8081/repository/npm-all/@jest/console/-/console-27.5.1.tgz (sha512-kZ/tNpS3NXn0mlXXXPNuDZnb4c0oZ20r4K5eemM2k30ZC3G0T02nXUvyhf5YdbXWHPEJLc9qGLxEZ216MdL+Zg==) seems to be corrupted. Trying again. npm WARN tarball tarball data for @jest/test-result@http://10.129.3.105:8081/repository/npm-all/@jest/test-result/-/test-result-27.5.1.tgz (sha512-EW35l2RYFUcUQxFJz5Cv5MTOxlJIQs4I7gxzi2zVU7PJhOwfYq1MdC5nhSmYjX1gmMmLPvB3sIaC+BkcHRBfag==) seems to be corrupted. Trying again. npm WARN deprecated svgo@1.2.0: This SVGO version is no longer supported. Upgrade to v2.x.x. npm WARN tarball tarball data for @jest/types@http://10.129.3.105:8081/repository/npm-all/@jest/types/-/types-27.5.1.tgz (sha512-Cx46iJ9QpwQTjIdq5VJu2QTMMs3QlEjI0x1QbBP5W1+nMzyc2XmimiRR/CbX9TO0cPTeUlxWMOu8mslYsJ8DEw==) seems to be corrupted. Trying again. npm WARN tarball tarball data for @jest/console@http://10.129.3.105:8081/repository/npm-all/@jest/console/-/console-27.5.1.tgz (sha512-kZ/tNpS3NXn0mlXXXPNuDZnb4c0oZ20r4K5eemM2k30ZC3G0T02nXUvyhf5YdbXWHPEJLc9qGLxEZ216MdL+Zg==) seems to be corrupted. Trying again. npm WARN tarball tarball data for @jest/test-result@http://10.129.3.105:8081/repository/npm-all/@jest/test-result/-/test-result-27.5.1.tgz (sha512-EW35l2RYFUcUQxFJz5Cv5MTOxlJIQs4I7gxzi2zVU7PJhOwfYq1MdC5nhSmYjX1gmMmLPvB3sIaC+BkcHRBfag==) seems to be corrupted. Trying again.

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