Angular jest unexpected token export not working config. Copy link nikhil1986m commented Jul 4, 2023. 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. x ( Unexpected token "export" ) #613. 12. "Unexpected token import" when testing Angular with Jest. Core problem is that ts-jest (jest-preset-angular is based on ts-jest) does not transpile JS files. But in the jest test run it causes the error: 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. x of jest so I think since I'm just now upgrading from 27. 0, and it worked. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured I created an NPM package that uses modern JavaScript. The transform option ensures that your TypeScript test files are transformed with ts-jest. Jest encountered an unexpected token - import (Angular CLI 6) 1. By default Great! You’ve successfully signed up. babelrc file. Maybe I am trying to build an angular + typescript + webpack application. Improve this answer. If I check the console the line is thrown by my app,js file. Angular 13 + jest + Unexpected token export jest angular. 8 to latest Minimal Repro 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. As per the accepted answer @sdgluck, I had to add a babel. – Sadra Abedinzadeh Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. nx migrate latest Open the root package. 🐛 Bug Report I am currently running into an issue where a jest test is breaking because I'm importing a package in another repo I have created in my package. Testing Angular application using Jest - Jest encountered an unexpected token. I’m going crazy. After the updates I got some weird errors when trying to run the unit tests in the project. I created a minimal example inside a fresh A Unexpected token export jest angular. I see the problem in jest 28 and above. json which breaks the test that imports that package. You've successfully subscribed to Lxadm. /abstractScene. jsx, such as ButtonGroup. Step 1: installation: Note that this might also be related to other issues with the dependency injection and parameter type reflection. restore the ~ and ^; remove the @angular/eslint packages which are still on 13; manually change @angular/cli to 14. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your You signed in with another tab or window. json file on root directory. Welcome back! You've successfully signed in. The following test does work for Jest using require: The following test does work for Jest using require: Then i'm start the app by command ng serve in console i see error: VM1018:2297 Uncaught SyntaxError: Unexpected token export at eval (<anonymous>) at webpackJsonp. e One such issue is the SyntaxError: Unexpected token 'export' when working with Jest. By Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Try Teams for free Explore Teams Jest encountered an unexpected token Jest failed to parse a file. Unexpected token export with TypeScript project - issue with transformIgnorePattern. sharikovvladislav changed the title Can not unit tests through jest because of SyntaxError: Unexpected token export Can not run unit tests through jest framework because of SyntaxError: Unexpected token export Aug 20, 2017 My project is a angular 2 based project, but it uses a 3rd party React package for UX part, which is installed through "npm install" command. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom I recently updated one of my Angular projects to Angular 13. Babel7 Jest unexpected token export . After upgrading to Angular 8 testing with Jest broken. I then re-installed the packages (using yarn) and changed the node version to >=8. 1 not working with Jest in angular v:16. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom Unexpected token < suggests that angular. I refuse to write my packages with old-skool require() and module. By default Facing issue while running Jest test cases in combination of D3 with Jest and angular. { "presets": ["@babel/preset Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. js file with jest, but it was failing because the component imported a . ValentinDEJ opened this issue Jan 14, 2025 · 15 comments Comments. ts or example. MSAL for Angular Jest test not working #858. Reload to refresh your session. ts:1 ({"Object. Jest not parsing es6: SyntaxError: Unexpected token import. Thank you 🙂. jest-preset-angular not working with Angular 13 and ESM module. Error: (SystemJS) exports is not defined. From the jest-preset-angular docs:. By default, if Jest sees a Babel config, it will use that to 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. However, despite following dozens of how-tos and tutorials, I am not able to fix the issue below. g. This issue is not related to Jest, it's a known Angular bug To mitigate this, you need to wrap your component under test, into some container For those that travelled this far. I have about 27 fails and all have a variety of : FAIL src/Components/c Note that this might also be related to other issues with the dependency injection and parameter type reflection. Jest - unexpected token export. 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company 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. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your I'm trying to integrate Jest into a working project, which uses import/export default in hundreds of places. when your code or its dependencies If you are encountering the `SyntaxError: Unexpected token ‘export’` error while running Jest tests on your JavaScript files, it is likely because your JavaScript code is using a Jest encountered an unexpected token. js"; ^^^^^ SyntaxError: Unexpected token 'export' The Jest config transformIgnorePatterns does not work in this repo. To fix this error, make sure that the module has a default export or use the export keyword with an object or function. So I need to configure jest so he will transpile both js and ts files. And I tried with many solution with jest config, but it didn't work unless and until I have created jest. Cannot read property 'matches' of undefined When installing Jest in Angular . This was all working fine until I upgraded to Ionic 4 beta 11 (from beta 8). You'll see warnings about the tsconfig. 3. 5. json for jsdom. 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. npx nx migrate latest didn't create any migration file (so it said). Алекс М "Unexpected token export" in Angular app with SystemJS and TypeScript. Related questions. . I was using Babel with Webpack. This question already has answers here: Babel + Jest Configuration (2 answers) Closed 3 years ago. spec. ɵisStandalone) is not a function . Code; Issues 25; Pull requests 5; Actions; Projects 0; Security ; Insights; New issue Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. JEST with Angular SyntaxError: Unexpected token 'export' [duplicate] Ask Question Asked 3 years ago. 28. Your link has expired. <anonymous>":function(module,exports,require,__dirname The issue started when updating Jest from 26. mock call, the tests pass for me again. TypeError: (0 , import_core. I was using jest 27, which works fine now. 4. Jest Unexpected identifier - Angular. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. json. Let me know if this works for you or if you have other ideas. However, your answer fixed this for me. Out of the box Jest supports Babel, which will be used import { CookieService } from 'ngx-cookie-service'; jest. Cannot find module @ionic/angular (ionic 4) from test-file . The Headache If you Google "jest unexpected token", there are several signs that 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company As answers above have described, Jest doesn't support ES6 modules. Unexpected token export jest angular. Experienced the same problem but I managed to solve it by deleting the node_modules folder and the yarn. We could use babel-jest or ts-jest. 1. We customize some files originally from that 3rd party UX package, the customized files are saved as *. 5. Jest encountered an unexpected token - import (Angular CLI 6) 7. By default, jest looks for test files by matching files inside of a __tests__ directory or files with . 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 I ran into a similar situation where I wanted to test a React component . spec suffix, e. Unit testing ionic services with jest. ts. Test suite failed to run. The import will then import the mocked version of the Sentry module which bypasses actually importing the Sentry package. Babel7 Jest unexpected token export. json file is). chr1soscl opened this issue Jul 23, 2019 · 10 comments Closed 4 tasks. This is my webpack. I used this as source and modified as per my requirement. By making it "^uuid$" this started working for me. 3. yarn add --dev babel-preset-env You should already have babel-jest. I finally found a workaround for this. ts: const { optimize: { CommonsChunkP I had the latest version of nx, i. ts file in all my apps to match your snippet, and it worked. Testing Angular I'm adding typescript support to a react codebase, and while the app is working ok, jest tests are failing all over the place, apparently not recognizing something about es6 syntax. Provide details and share your research! But avoid . Jest encountered an unexpected token - import (Angular CLI 6) 9. js'; ^^^^^ Jest not work after migrating to Angular 19. Jest Ionic test fails - unexpected token import. Jest failed to parse a file. 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 I saw it on line 1, because line 1 is almost always occupied by an import statement - and there are no import statements in CommonJS. Internally, preact provides a "browser" field, but the file is ESM, which jest does not natively support without a babel transform. babelrc in your project's root directory and add this code there. Unexpected token export with jest. Sign in Product 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. js:. It works fine during normal Angular build. As part of the migration activity to remove vulnerabilities of ngx-charts we have also migrated this SyntaxError: Unexpected token export jest occurs when you try to export a module using the export keyword but the module does not have a default export. The problem is happening because jest now looks at the "browser" field in package. js:53) In my project I was upgraded nodejs version to 20 and after that test cases failed. I updated my jest. Closed 4 tasks. Unknown error: SyntaxError: Unexpected token 'export' on ng command. 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. js:2 export * from ". Jest gives ReferenceError: require is not defined. In this comprehensive guide, we'll help you understand the cause of this error and provide a step-by Resolving such issues requires configuring the transformIgnorePatterns option in the Jest configuration. Testing Command update Is this a regression? Yes, this behavior used to work in the previous version The previous version in which this bug was not present was Unsure Description ng update @angular/core fails from v17. Uncaught SyntaxError: Unexpected token export at Object. By Hi Guys, I'm experiencing a similar issue to this 543 in that I'm receiving unexpected token export. lock file. You signed out in another tab or window. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. This usually means that you are trying to import a file which Jest cannot parse, e. Using transformIgnorePatte After this import { Store } from '@ngrx/store'; is working. Hot As React applications grow more complex, the patterns that were “just fine” when you were starting out might start to feel limiting. The example configuration above should be located in the root directory of your project (where your package. 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. it's not plain JavaScript. Here's what you can do: • If you are trying to use ECMAScript I'm trying to use jest in an Angular 13 project for testing. 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog 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. 0 as well. Exports is not defined . I am using Angular 6+ but I always get this error: src\setup-jest. About; Products OverflowAI; 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; I don't even know where to start with this one as I am not too familiar with testing and using this package for jest testing. 0. About; Products OverflowAI; 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; OverflowAI GenAI features for Teams; Now available on Stack Overflow for Teams! AI features where you work: search, IDE, and chat. By default, if Jest sees a Babel config, it will use that to transform your files thymikee / jest-preset-angular Public. I use jest-preset-angular with @angular-builders/jest. js:10 export { default as add } from '. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Unexpected token export jest angular. Here's what you can do: • To have some of your "node_modules Testing Angular application using Jest - Jest encountered an unexpected token 2 Angular NgRx integration test not working (with Nx and Jest) One other option is to pull in babel-jest and tell it to transpile those js files. Jest - unexpected token export . e. 56. My case was module federation shared dependencies caused a legacy package's css not to get picked up. For a basic project, that's all that's needed. chr1soscl opened this issue Jul 23, 2019 · As of today (like just now) I was able to upgrade to 14. jsx. 0; Then npm update and npx nx migrate --run-migrations were working as expected. @Swimlane/ngx-charts 20. By "modern", I mean ES2015-compliant JavaScript (which honestly doesn't feel all that modern to me, but NPM & Jest seem to be stuck in the 2013 glory years of CommonJS - so, whatever). Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Install the babel packages @babel/core and @babel/preset which will convert ES6 to a commonjs target as node js doesn't understand ES6 targets directly. /add. jest + typescript + es6 modules (yet again, 2019) - SyntaxError: Jest: SyntaxError: Unexpected token 'export' Hot Network Questions Can an object moving fast enough away from a stationary observer redshift out of the visible spectrum? SyntaxError: Unexpected token 'expor Skip to main content. 249 Jest gives an error: "SyntaxError: Unexpected token export" 4 Unexpected token export jest angular. import babelParser from '@babel/eslint-parser'; // Import parser. 5 Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Jest provides babel-jest transpiler out of the box. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. So I need something to do that work. 3 to 27. 2. 0. example. css stylesheet. In this blog post, we will explore how to leverage transformIgnorePatterns effectively, Jest failed to parse a file. Also, had to set Prettier option endOfLine to auto to essentially ignore CR (carriage-return) errors. Jest/Ionic 4 beta - import { Platform } from '@ionic/angular'; gets SyntaxError: Unexpected token export in Jest testing, not Ionic. By default, if Jest sees a I was using a jest. ValentinDEJ opened this issue Jan 14, 2025 · 15 comments Open 1 of 2 tasks. I am also now using Jest 23. Modified 3 years ago. I'll look into this more. By default Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. You need to If I add the jest. tsx to a relative import: import { MyModel, Type } from '. By default, if Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. js? We have to make sure you have the base-href set to /. Cannot run Jest tests for components (Failed to load html files) 4. I have another repo where transformIgnorePatterns works, but then Jest RUN hangs without errors. This happe Skip to main content. Share. Jest encountered an unexpected token Jest failed to parse a file. I use ngx-pipes, which is a library that is not compiled for Angular 13. Open 1 of 2 tasks. I recommend using ts-jest for simplicity. I had to restart VSCode to get the new lint parser options working. configureTestingModule({ declarations: [Your-Component], Most of my JEST unit test cases are failing with the recent upgrade. 0 but it fails in Jest 23. test. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Then you need to create one configuration file with name . x I'll stick with this solution for now. Some vendors publish their sources without transpiling. \node_modules\@babylonjs\core\index. Then update your jest configuration:. Sign up for MSAL for Angular Jest test not working #858. genMockFromModule('ngx-cookie-service'); TestBed. json file. JEST - unexpected token import while running test. OnPush is used . Notifications You must be signed in to change notification settings; Fork 306; Star 885. 1 Can not run unit tests through jest framework because of SyntaxError: Unexpected token export. Jest not work after migrating to Angular 19. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. com. (app. You can do this from the cli with the flag --base-href=/ Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. To add support for other extensions you need to write custom transformers. ts-jest does not recognize es6 imports. /common/model/MyModel'; There are several changes that I needed to get this to work. Its not working for me. 6. This happens e. 4. Jest encountered an unexpected token - import (Angular CLI 6) 0. Stack Overflow. Transpile js files through babel-jest. The first method works if for some reason you have to import a css file from node_modules directly. test or . Learn more Explore Teams Jest encountered an unexpected token Jest failed to parse a file. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. We're using ts Navigation Menu Toggle navigation. npm install --save-dev @babel/core @babel/preset-env. Viewed 7k times 4 . As per enzo's excellent answer, I had to tell ESLint to use Babel as my parser. Asking for help, clarification, or responding to other answers. We have recently migrated the code from Angular 13 to Angular 16. Here's what you can do: • If you are trying to use ECMAScript Jest doesn't use Webpack so it doesn't know how to load other file extensions than js/jsx. 9. 1. Follow answered Sep 22, 2016 at 5:47. You need to say jest 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 - import (Angular CLI 6) 3. 6. Copy link ValentinDEJ commented Jan 14, Since that isn't valid js, you get Uncaught SyntaxError: Unexpected token < So how do we get /some-angular-route/ out of the url for runtime. This should fix the issue when using @agm/core for an Angular 6 app is being used with jest. I was also able to continue using my existing . Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. js is an HTML document, not a JavaScript file. Check you are serving up what you think you are serving up for the request. So, we need transform the code to a supported module type. You switched accounts on another tab or window. This issue is not related to Jest, it's a known Angular bug To mitigate this, you need to wrap your component under test, into some container Jest encountered an unexpected token Jest failed to parse a file. 7. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". 20. nikhil1986m opened this issue Jul 4, 2023 · 7 comments Comments. @Input() bindings are not reflected into fixture when ChangeDetectionStrategy. ProjectDir\node_modules\lodash-es\lodash. js:155) at webpack_require (polyfills. 1 #1880. rxbdw emin adp teap ikjmc lsjjsh vmu buzubt soix oxnztpp gpxtlr furrwi ihild ihdjd rqp