Unexpected Token Export Vitest, Sep 20, 2025 · Prerequisites I confirm my issue is not in the opened issues I confirm the Frequently Asked Questions didn't contain the answer to my issue Environment check I'm using the latest msw version I'm us Aug 11, 2022 · It told us that the export keyword isn’t available when importing the bundled JavaScript into the browser. Jul 27, 2022 · Vitest Unexpected token 'export' Asked 3 years, 9 months ago Modified 3 years, 9 months ago Viewed 3k times Dec 31, 2022 · I'm using react with ViteJS and Vitest for testing. I also made an update to your code so I don't need to have the <NextIntlProvider> element. 4. Haven't you ever been annoyed by the common SyntaxError: Unexpected token 'export' that you get when you forget to downgrade ESM to CommonJS in Jest, and the weird negative regex in transformIgnorePatterns? Feb 24, 2026 · Jest’s module resolver picks this ESM version by default, but CJS cannot parse export or import statements, which leads to the SyntaxError: Unexpected token 'export'. For a basic project, that's all that's needed. Apr 8, 2022 · Vitest 是一个由 Vite 提供支持的极速单元测试框架。Vitest 旨在将自己定位为 Vite 项目的首选测试框架，即使对于不使用 Vite 的项目也是一个可靠的替代方案。 常见错误 不能找到模块 '. Jest uses Babel to compile JavaScript ES Modules to CommonJS, using the @babel/plugin-transform-modules-commonjs Babel plugin. . 2 to 9. resolve. Observe that test cases fail to execute or produce unexpected errors. This tutorial shows you how we fixed it! Vite Series Overview How to Fix „Uncaught SyntaxError: Unexpected token 'export‘“ Resolve `import. I have set up the config for vitest and the test setup file too as you can see in the screenshots below. vite. json，因此如果你依赖此行为，你可能需要自己安装 vite-tsconfig-paths。 Because vitest does not export the Jest globals (like describe), you can either set globals: true, or manually import the required keywords in your test. Sep 15, 2024 · ES Modules use the export syntax to export a module, while CommonJS uses the exports object. Sep 10, 2024 · Migrating from Jest to Vitest in a NestJS project can significantly improve testing efficiency and performance. Jan 21, 2025 · Version ^5. Jest's Retrofit Problem vs. /relative-path' 如果你收到一个 module cannot be found 的报错，则可能意味着几种不同情况： 你拼错了路径。确保路径正确。 你可能依赖于 tsconfig. meta. config. The workload is relatively large, and I am concerned about the impact of changing the packaging method. Jan 28, 2026 · All these changes are basically telling tools how to bridge the two fundamentally different worlds of CommonJS and ES Modules. May 7, 2026 · Since Vitest defaults to the node environment (which uses viteEnvironment: 'ssr'), module resolution uses ssr. Vitest's Fresh Start This is where my issue comes into focus.
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