Syntaxerror unexpected token export jest react. Many of the threads are long. Can someone explain why did it worked? Oct 3, 2023 · #578 This is proving a hard fix to find. g. Sep 15, 2024 · By default, Babel excludes Node modules from transformation. If your project uses TypeScript, Jest transforms your TypeScript files to JavaScript using the babel-jest transformer. I updated some dependencies (react, jest and others), and I also got the error: Jest encountered an unexpected token - SyntaxError: Cannot use import statement outside a module May 22, 2023 · I have a problem with the unit tests of my React project, it is configured to be compiled with webpack, however when executing the unit tests they are giving me this error: SyntaxError: Unexpected May 25, 2022 · Jest encountered an unexpected token Jest failed to parse a file. Oct 23, 2023 · Have you configured jest together with react-testing-library and now gotten Jest SyntaxError: Unexpected token 'export' when building? I tried multiple things, like modifying . This error can be frustrating, especially for those new to TypeScript and Jest. Jest setup "SyntaxError: Unexpected token export" Asked 9 years, 1 month ago Modified 2 years, 4 months ago Viewed 96k times Jan 22, 2022 · Jest encountered an unexpected token Jest failed to parse a file. Feb 23, 2021 · 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. config. This happens e. 1) #12036 May 22, 2023 · If you are encountering the `SyntaxError: Unexpected token ‘export’` error while running Jest tests on your JavaScript files, it is likely… Jest gives an error: "SyntaxError: Unexpected token export"I'm using Jest to test my React app. I follow the instructions on the Jest site, but for some reason I get: SyntaxError: Unexpected token < I can test Jul 3, 2023 · Jest tests are failing because of an unknown unexpected token "export" Ask Question Asked 2 years, 8 months ago Modified 9 months ago The Jest SyntaxError: Unexpected Token 'export' error occurs when you try to export a module in your Jest test file but you don't use the export keyword correctly. Worth noting that if you're using react-app-rewired, it takes over the processing for the jest property in package. when yo The SyntaxError Unexpected Token export Jest error is a common error that occurs when you try to export a value from a JavaScript module using the export statement. Recently, I added DeckGL to React Jest - Unexpected token importI'm learning react and I want to test one of my components but I'm stuck I've ran into a problem trying to understand how web workers might be used inside React apps: Uncaught SyntaxError: Unexpected token '<' (at worker. The problem: FAIL src/Hawtio. tsx Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. json, and concatenates rather than replaces. The threads span a number of years - meaning that the issue keeps cropping up for people repeatedly. Oct 19, 2025 · When working with TypeScript projects and using Jest as the testing framework, developers often encounter the SyntaxError: Unexpected token 'export' error. So this solution will not work and you will have to place it in the script options or inside the overrides script Dec 27, 2025 · The SyntaxError: Unexpected token export when using DeckGL with Jest is caused by a mismatch between DeckGL’s ES6 modules and Jest’s default CommonJS expectations. js. test. 1. Nov 4, 2021 · [Bug]: Unexpected token 'export' when Jest test imports d3 (7. . Jun 28, 2019 · I'm want to test a component in a React app using Jest Enzyme with TypeScript. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. This can be an issue if an ES Module-only package, such as react-markdown, is not pre-transpiled. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in jest. js:1:1) I did a research on StackOverflow and found out that this problem could be solved just by moving the web worker file to the public folder of my React app. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. qqc egv rlml egocl bokm zqxkv qoufafak qbtc pfcggq pwalknv