Jest Syntaxerror Unexpected Token Export Uuid, . uuid no longer supports CJS. That said, the error sounds like Jest thinks the uuid code is CommonJS, which it's not. I just realized that this library is not getting transpiled from ES5 to commonJS, hence the isssue. I tried every option with similar issues, but I can't get it to work. Map the “uuid” package to its ESM code, so that Jest can When I try to run my tests with Jest 29. test script Might be a little late but I had the same issue running Node. Issue I used to solve similar errors while I was using Jest with only Javascript but currently Im not able to do so with Typescript. This happens e. , export or import), as it historically relies on Node. 1. All my tests were running fine until I installed Puppeteer which requires Problem When trying to run a Jest test, you encounter the following error related to the uuid package: Jest encountered an unexpected token Jest failed to parse a file. This error can be I just realized that this library is not getting transpiled from ES5 to commonJS, hence the isssue. The Headache If you Google "jest unexpected token", there are several signs that this is a really nasty issue: There are a great many threads on the issue - on Stack Overflow and otherwise. 0 fixed the issue, I read downgrading to 12 can also help to use the 在本文中，我们将介绍在使用uuid库时经常遇到的Unexpected token ‘export’ SyntaxError错误，并提供解决此问题的方法和示例。 阅读更多： TypeScript 教程 什么是TypeScript和JEST？ TypeScript是一 How to Fix Jest SyntaxError: Unexpected Token 'export' in React TypeScript Tests If you’re working with React and TypeScript, you’ve likely integrated Jest for testing. 0 #904 Note Jest does not support ES Modules; it uses CommonJS modules. when your code or its dependencies Jest unexpected token 'export': How to fix Jest is a popular JavaScript testing framework. There are a number of solutions to this problem, and the one that works for you, will depend on the specific for your project: If you can upgrade your uuid dependency to version 9. 7. This time I'm going to talk about a specific error: SyntaxError: Hi, I'm using jest to test my project. 0, it shows this error: Jest encountered an unexpected token Jest failed to parse a file. Trying to test a file where I import uuid results with an error: Test suite failed to run SyntaxError: The requested module 'uuid' does not provide an export When working with TypeScript projects and using Jest as the testing framework, developers often encounter the SyntaxError: Unexpected token 'export' error. resolve ('uuid') in moduleNameMapper, this gets resolved. Im working on a NestJS project which used to run on node v16. js 13, updating my package.
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