Jest encountered an unexpected token export react json for jsdom. How to resolve unexpected tokens in TypeScript. 3. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. TypeScript Jest: Unexpected Token Export I'm trying to run unit tests for a TypeScript project which uses another TypeScript project I've created as a dependency. So I decided to come with a post on this with a hope to help more people via channel. Jul 14, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. E:\Git\node_modules@mui\x-date-pickers\internals\demo\index. Transform react-markdown (and its dependencies) using babel-jest (solution for CRA 4. Nov 19, 2020 · Jest encountered an unexpected token. Apr 15, 2023 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. . Jest encountered an unexpected token ReactJS. Jun 27, 2023 · Configuring transformIgnorePatterns: To address unexpected token errors in Jest, the transformIgnorePatterns option plays a crucial role. js file to include transformIgnorePatterns: Aug 1, 2022 · Add a transform for js which uses babel-jest-- Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Update my tsconfig to output commonJS modules Update my tsconfig to allowJs:true and update my jest transforms to parse JS with ts-jest Test suite failed to run, Jest encountered an unexpected token Hey everyone, I recently imported the @FluentUI\react-charting module into my UX code so I could create a sparkline chart, and everything compiles and renders correctly. Dec 29, 2019 · I am building an expo react-native app with expo SDK 36. When I run jest, I get the following error: Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. But even the best frameworks can sometimes throw errors. json to have "test": "react-scripts test" or replacing "jest" with "react-scripts test" under scripts just like this: package. However, while running npm i, I noticed this warning: See full list on dev. 7 Public or Confidential Client? Dec 23, 2022 · Jest encountered an unexpected token with SwiperJs. Jul 9, 2019 · Trying to set up Jest to test my React components (Technically I'm using Preact) but same idea Anytime I try to get a coverage report, I get errors when it hits any jsx syntax. Provide details and share your research! But avoid …. I am on Jest > 24, no type script, its an ejected react-create-app pretty recently (6 months ago~). The Error Sep 25, 2020 · このカンマを削除したところ、無事にテストが実行できました。めでたしめでたし。 余談. Dec 27, 2022 · I was using jest 27, which works fine now. 6. " Babel7 Jest unexpected token export. because it is a JS file with TS syntax, or it is published to npm as uncompiled source files. Jest Aug 31, 2023 · When I try to run a test using MsalReactTester, I get the following error: Jest failed to parse a file. Out of the box Jest supp Mar 2, 2018 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Jest SyntaxError: Unexpected Token ‘export’ Jest is a popular JavaScript testing framework. test. This usually means that you are trying to import a file which Jest cannot parse, e. Oct 14, 2024 · I'm facing an issue running my tests with Jest in a React Native project. 0 Wrapper Library MSAL React (@azure/msal-react) Wrapper Library Version 2. None of the popular solutions here were working for me either. Jun 8, 2023 · $ npm run test > my-app@0. Jan 21, 2025 · You signed in with another tab or window. However, your answer fixed this for me. 0. js file with jest, but it was failing because the component imported a . Choosing the Right Transformer You can use babel-jest or ts-jest as a transformer: Using babel-jest as the Transformer You should use babel-jest Aug 19, 2021 · Option 3: If you still want to make jest run react-markdown's code. json . Running with jest and react-testing-library. json: Aug 26, 2022 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Aug 18, 2021 · You signed in with another tab or window. The first method works if for some reason you have to import a css file from node_modules directly. Marcus, a seasoned developer, brought a rich background in developing both B2B and consumer software for a diverse range of organizations, including hedge funds and web agencies. Nov 9, 2023 · Jest 一些报错信息. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is n Dec 25, 2020 · You signed in with another tab or window. My case was module federation shared dependencies caused a legacy package's css not to get picked up. The problem is happening because jest now looks at the "browser" field in package. Jun 20, 2022 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. SyntaxError: Unexpected token 'export' on '@react-navigation' 2. Jun 28, 2019 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. C:\study\reactodo\node_modules\react-icons\fa\angle-down. js:2:44) at Object. It’s known for its simplicity and speed, making it a great choice for testing both small and large projects. spec. yarn add --dev babel-preset-env May 31, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. I was using Babel with Webpack. js (I tried to get jest to ignore sendbird, but to no avail): Jul 19, 2024 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Nov 9, 2022 · I am having the same issue. Jan 31, 2019 · I ran into a similar situation where I wanted to test a React component . Oct 1, 2022 · Current Behavior I want to independently publish @example/a and @example/b. json. Sep 25, 2019 · I have a test for a test for a TSX file written in a JSX file which fails to run due to unexpected token: Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. json の exports サポートが影響している可能性があります。 その場合は customExportConditions による調整で通るようになる場合があります。 Mar 22, 2018 · export CI=1 Bibliography. React Jest - Unexpected token import. 1. json, I have the failing test: FAIL src/tests/index. I'ts like @dean-g pointed out. Jun 15, 2024 · Jest encountered an unexpected token Jest failed to parse a file. Nov 13, 2020 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Jest vs React: module exports and "Jest encountered an unexpected token" 0. js, and the last one was close but I was still missing one important thing the imports. g. component FAIL __tests__/HomePage. If you’re a JavaScript developer, you’ve probably encountered the Oct 7, 2018 · FAIL src/tests/ArticleService. When I run the tests individually (using the command to run a specific test), they pass without a hitch. /arc. js to . x of jest so I think since I'm just now upgrading from 27. Sep 6, 2023 · Jest failed to parse a file. CRA & Jest. It’s fast, flexible, and easy to use. js has been altered during migration, but the the projects in the workspace have not had their jest. 8 Public or Confidential Client? So, finally i've solved this. However mine was fixed by just modifying package. Jest encountered an Jan 13, 2023 · FAIL ***. js:5 export default class FaAngleDown extends React. Jest failed to parse a file. /DemoContainer'; Test suite failed to run. when your code or its dependencies use non-standard Dec 11, 2021 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. When I try running tests for any component that uses react-markdown I get some issues here Jest encountered an unexpected token Jest failed to parse a file. css stylesheet. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such Marcus Greenwood Hatch, established in 2011 by Marcus Greenwood, has evolved significantly over the years. Dec 28, 2022 · Jest encountered an unexpected token Jest failed to parse a file. 4. This happens e. js: Aug 9, 2023 · Jest encountered an unexpected token Jest failed to parse a file. May 29, 2023 · Version Jest: 29. Nov 30, 2018 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. nx/pa Jun 24, 2024 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. js:1 ({"Object. Jan 3, 2024 · FAIL src/App. jsx'] to jest. js Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Jest encountered an unexpected token: What it is and how to fix it. js:. config and changing the transformIgnorePatterns but not having any success Mar 9, 2023 · Jest v28 へのアップデートで Jest encountered an unexpected token エラーが発生した場合は package. Mar 9, 2023 · Hi redwood community! I am trying to use react-markdown in a new redwood 4. This error, Jest encountered an unexpected token, remains. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Oct 17, 2018 · I have the same problem for a few days and tried different solutions but they doesn't work for me. Modified 5 years, 7 months ago. jsx and added extensionsToTreatAsEsm: ['. I updated my jest. Mar 17, 2020 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Jest encountered an unexpected token when testing react-native with jest. This did not work, what did solve it in the end was adding the following to our jest. May 25, 2022 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. You signed out in another tab or window. Nov 16, 2019 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Dec 24, 2023 · You can do so by checking for the following configurations: You're Using the Right Transformer ; You're Using the Right Jest Testing Environment ; You're Using the Right " jsx " Mode in tsconfig. g. 13. tsx Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Unexpected token 'export' > 2 | import { Swiper, SwiperSlide } from 'swiper/react'; Jest encountered an Apr 26, 2022 · I'm trying to set up a new project, and simply adding these give me an error: import { configure } from "enzyme"; import Adapter from "enzyme-adapter-preact-pure"; configure({ adapter: new Adapter( Dec 29, 2022 · Jest encountered an unexpected token Jest failed to parse a file. Nov 19, 2023 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. I am running the tests on the CLI by running npx jest <test file> and this works flawles Feb 16, 2020 · React Jest causing "SyntaxError: Unexpected token . module. js"} SyntaxError: Unexpected token 'export' I have tried updating my jest. I managed to solve it by installing the below presets and having the babel configuration file as follows: Jun 9, 2021 · Jest encountered an unexpected token Jest failed to parse a file. This usually means that you are trying to import a file which Jest cannot parse, e. Jest was configured and the **last pipeline on dev was able to run test, However, if I clone now, even if I have a package-lock. when your code or its dependencies use non-standard JavaScript syntax, or w May 7, 2024 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Nov 20, 2023 · Core Library MSAL. Sep 24, 2019 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Sep 29, 2024 · For those who have struggled with Jest configuration issues and the previous solutions did not resolve the problem, here’s a working solution: Update your jest. As of Aug 23, 2022 the latest version of uuid is still beta and the linked not above indicates it was only tested with the beta 29. js 运行报错：Error: Export encountered errors on following paths 的错误处理; Jest 和 Jest CLI：使用 Jest CLI 进行测试; 在 Jest 测试中如何使用 Jest-Extended 来扩展 Jest 的断言？ Nov 23, 2021 · It seems that it has less to do with the version of the dependencies. @example/b will have a dependency on @example/a. Aug 9, 2023 · - React and Typscript with Jest and React-testing-Library. Aug 4, 2020 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. it's not plain JavaScript. Oct 24, 2024 · Jest 异常：Jest encountered an unexpected token; Jest 运行测试时发生 "Jest encountered an unexpected token" 的解决方法; Next. Jan 27, 2023 · I am trying to set up firebase authentication on my Next. Sep 6, 2020 · Here is one of the most popular question which is related to testing with jest for repo setup with create-react-app as I've seen in stackoverflow community. export function flatten (target, opts) { ^^^^^ SyntaxError: Unexpected token 'export' I made sure my jest was properly installed and set up, as per Next. May 21, 2023 · Configure Jest to use Babel: If you are using ES6 module syntax or any other non-standard JavaScript syntax that Jest does not support, you can configure Jest to use Babel to transpile your code The jest encountered an unexpected token can be caused by the inability to configure Jest with creat-react-app, Jest not being able to transform packages, inability to transpile modern JavaScript, circular imports when mocking modules, Jest not able to transform the dependency, and incompatible dependencies after the update. x I'll stick with this solution for now. js (@azure/msal-browser) Core Library Version 3. Oct 11, 2022 · You signed in with another tab or window. Aug 2, 2022 · I had the latest version of nx, i. npx nx migrate latest didn't create any migration file (so it said). json: Aug 2, 2022 · I was using a jest. js project (using TypeScript), and I believe that I have encountered some configuration issues related to using firebase that are causing my Mar 13, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 3 to 27. Feb 17, 2022 · Jest encountered an unexpected token Jest failed to parse a file. Jest encountered an unexpected token Jest failed to parse a file. Dec 13, 2022 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Asking for help, clarification, or responding to other answers. Sep 10, 2024 · Describe the bug I have a project for react, typescript, in which I have dependencies coming as ecm modules. Clearing cache and removing node_modules didn't help. Feb 11, 2019 · For those that travelled this far. Try npm test and note that tests fail with SyntaxError: Unexpected token export; Note that you can get jest to run and the tests to pass by: changing the absolute import on line 5 of App. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not Dec 26, 2023 · Core Library MSAL. If a component is single, and not importing anything else, &quot;npm test&quot; runs smoothly. json 中添加 --transformIgnorePatterns 这个 flag： 在使用TypeScript、React和Jest进行测试时，当遇到“Encountered an unexpected token on imported file”错误时，我们可以通过配置ts-jest或者babel-jest来解决这个问题。 这些配置能够让Jest正确解析TypeScript文件的依赖项，从而使测试能够正常运行。 Jan 24, 2024 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. js:1 {export {defauls as arc} from ". Aug 1, 2022 · Add a transform for js which uses babel-jest-- Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Update my tsconfig to output commonJS modules Update my tsconfig to allowJs:true and update my jest transforms to parse JS with ts-jest Feb 10, 2022 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. So the final fix was: Update the imports FAIL src/index. Sep 9, 2022 · node_modules\d3-shape\src\index. 1. May 28, 2024 · Getting Unexpected Token Export. Jun 24, 2024 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. While using old babel version everything worked fine, but because of some project problems we had to upgrade babel to 7 Jul 3, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. config () Dec 26, 2023 · Marcus Greenwood Hatch, established in 2011 by Marcus Greenwood, has evolved significantly over the years. Issue : I am using ts-jest to test my typescript library. js altered with the new transformIgnorePatterns and transform configurations. Nov 30, 2022 · You signed in with another tab or window. By making it "^uuid$" this started working for me. Jun 11, 2020 · I believe your case is pretty much similar to these ones: amcharts4 issue #2133 - github OR Jest encountered an unexpected token. Dec 25, 2020 · Jest encountered an unexpected token with react-native. Now I want to test multiple components together, and I immedia Dec 23, 2020 · but Jest doesn't like it and throws a SyntaxError: Unexpected token 'export' I tried different things, like play around with . ts Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. May 1, 2023 · Jest encountered an unexpected token Jest failed to parse a file. <anonymous> (src\components\category\category. ts is still using babel-jest which breaks import/export and the globals/tsconfig path isn't getting generated so jest types aren't recognized. Apr 22, 2019 · Sorry for unclear answer, I meant that, the line of code where Jest fails on, is part of react-navigation-tabs library, not my code; But where my code, needs and imports it, there is not any issues with jest, so, Jest does work in my files but fails on the sub-libraries (I can not just remove all my usages of external libraries, specially this one is required for the tabs of the application) Mar 13, 2023 · Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 1 Cannot use import statement outside a module - jest + nextj. js:284:10) at Object. ":function(module,exports,require,__dirname,__filename,jest){export { DemoContainer, DemoItem } from '. js Jest encountered an unexpected token #3746. 碰到了一些 Jest 的报错，列一下搜到的解决方案. Try Teams for free Explore Teams Apr 3, 2019 · create-react-app jest encountered unexpected token {Ask Question Asked 5 years, 11 months ago. エラー元の tsconfig というパッケージについて調べたら TypeScript 公式のものではなく、しかも 3 年前から更新されていませんでした。 Sep 5, 2018 · So I'm trying to write tests on my React Native app with Jest and TypeScript. Oct 14, 2024 · FAIL __test__/sum. Mar 11, 2019 · The only way I could get this to work for myself was to add: { "targets": { "node": "current" } } So that my presets read: Feb 13, 2024 · FAIL src/utils/html-to-markdown. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. Jun 20, 2020 · Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Aug 27, 2018 · I have this excpetion Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. You switched accounts on another tab or window. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". My jest. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Jest is a popular JavaScript testing framework. By configuring this option correctly, we can exclude Sep 23, 2024 · I've encountered similar errors before, so here are my thoughts: That's good that you have the ResizeObserver mocked and it's in your setupFiles (that's often forgotten to add it there). Follow answered Jun 14, 2018 at 4:38. js Oct 30, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. it's not pla The jest encountered an unexpected token can be caused by the inability to configure Jest with creat-react-app, Jest not being able to transform packages, inability to transpile modern JavaScript, circular imports when mocking modules, Jest not able to transform the dependency, and incompatible dependencies after the update. 0 test > jest FAIL test/unit/test001. Jun 10, 2021 · With Konva and react-konva installed and imported, my jest@enzyme tests failed to run with this error: Test suite failed to run Jest encountered an unexpected token This usually means that you are Sep 13, 2023 · Jest encountered an unexpected token. Feb 14, 2022 · Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Improve this answer. Jest encountered an unexpected token because trying to import a file which Jest cannot parse. Reload to refresh your session. exports = { presets: ['@babel/preset-env', '@babel/preset-react'], }; package. , it's not plain JavaScript. Jan 14, 2021 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Dec 1, 2022 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 3) (credit to How to set transformIgnorePatterns to fix "Jest encountered an unexpected token" nrwl/nx#812 (comment)) Update Aug 19, 2022: Add dependency "trim-lines" Jan 30, 2022 · Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Sep 6, 2021 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. to Sep 16, 2022 · New NX projects with React are still running into this issue, the jest. json Renamed the relevant test files from . Nov 4, 2021 · The issue started when updating Jest from 26. However, despite following dozens of how-tos and tutorials, I am not able to fix the issue below. Jest: Test suite failed to run, Unexpected [英]Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 原文 2022-01-22 22:26:54 2 1 javascript / reactjs / unit-testing / testing / jestjs Mar 14, 2019 · jyurek changed the title Jest encountered an unexpected token Jest you need to read the guide on the jest docs for how to use jest with react-native. When running jest on @example/b it fails to run due to ESM syntax. component. I see the problem in jest 28 and above. Jest unexpected token 'export': How to fix Jest is a popular JavaScript testing framework. Component { ^^^^^ SyntaxError: Unexpected token export at transformAndBuildScript (node_modules\jest-runtime\build\transform. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in jest. Jan 25, 2017 · I am now using React Jest to test code. <anonymous> (src\components\category-tree\category-tree. I finally found a workaround for this. 0 Steps to reproduce Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. e. Viewed 10k times Sep 13, 2019 · In my case it was failing because I did not set properly the typescript support for Jest. The global jest. ts file in all my apps to match your snippet, and it worked. Yuki Hirano Yuki create-react-app jest encountered unexpected token {3. Cannot use import statement outside a module - jest + nextj. My final configs are: babel. 这个是我的项目的问题，运行 Jest 后报错说 "SyntaxError: Unexpected token export"，最后是用在 StackOverflow 第二个解决方案成功的，修改方法为在 package. This means that a file is not transformed through TypeScript compiler, e. 5. This should fix the issue when using @agm/core for an Angular 6 app is being used with jest. or search There are several changes that I needed to get this to work. Sentry Answers > React > Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Jest encountered an unexpected token Jest failed to parse a Dec 28, 2022 · Jest encountered an unexpected token Jest failed to parse a file. tsx to a relative import: import { MyModel, Type } from '. config. /common/model/MyModel'; Jan 1, 2024 · I was able to get this working by doing the following: Added NODE_OPTIONS=--experimental-vm-modules to the test script in package. js docs, but still same issue. This is one method of resolving unexpected tokens in TypeScript. 3 project with typescript. Feb 15, 2023 · Jest encountered an unexpected token Jest failed to parse a file. Jun 28, 2024 · Jest encountered an unexpected token; Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Share. 34. By default, if Sep 18, 2024 · Jest encountered an unexpected token Jest failed to parse a file. xiaq ujnc nhwm eaabnu pmbvd hbnql wgsc iqh obwj pwagy wieoa deujjtb vyhukt ajyze dsz