Angular jest unexpected token export not working genMockFromModule('ngx-cookie-service'); TestBed. json for jsdom. 3 to 27. 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). Jest encountered an unexpected token - import (Angular CLI 6) 9. 20. . 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. { "presets": ["@babel/preset Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Алекс М "Unexpected token export" in Angular app with SystemJS and TypeScript. e One such issue is the SyntaxError: Unexpected token 'export' when working with Jest. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. @Swimlane/ngx-charts 20. 56. We're using ts Navigation Menu Toggle navigation. json file on root directory. nx migrate latest Open the root package. spec. 0 as well. x ( Unexpected token "export" ) #613. So I need to configure jest so he will transpile both js and ts files. This question already has answers here: Babel + Jest Configuration (2 answers) Closed 3 years ago. The import will then import the mocked version of the Sentry module which bypasses actually importing the Sentry package. test. 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. chr1soscl opened this issue Jul 23, 2019 · As of today (like just now) I was able to upgrade to 14. Asking for help, clarification, or responding to other answers. Welcome back! You've successfully signed in. To add support for other extensions you need to write custom transformers. By default, jest looks for test files by matching files inside of a __tests__ directory or files with . Unit testing ionic services with jest. 3. Unknown error: SyntaxError: Unexpected token 'export' on ng command. By default Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Its not working for me. com. 1. 2. 1 Can not run unit tests through jest framework because of SyntaxError: Unexpected token export. ɵisStandalone) is not a function . 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. css stylesheet. 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. After upgrading to Angular 8 testing with Jest broken. 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. My case was module federation shared dependencies caused a legacy package's css not to get picked up. I then re-installed the packages (using yarn) and changed the node version to >=8. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. By default, if Jest sees a I was using a jest. ts-jest does not recognize es6 imports. 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. By default, if Jest sees a Babel config, it will use that to transform your files thymikee / jest-preset-angular Public. Improve this answer. 3. 🐛 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. json file is). 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. 1 not working with Jest in angular v:16. Open 1 of 2 tasks. By default Facing issue while running Jest test cases in combination of D3 with Jest and angular. If I check the console the line is thrown by my app,js file. It works fine during normal Angular build. jsx. Modified 3 years ago. I’m going crazy. MSAL for Angular Jest test not working #858. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 0. js:2 export * from ". 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. By making it "^uuid$" this started working for me. 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. nikhil1986m opened this issue Jul 4, 2023 · 7 comments Comments. 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. This was all working fine until I upgraded to Ionic 4 beta 11 (from beta 8). Jest Ionic test fails - unexpected token import. 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. Maybe I am trying to build an angular + typescript + webpack application. 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. I updated my jest. chr1soscl opened this issue Jul 23, 2019 · 10 comments Closed 4 tasks. Jest encountered an unexpected token - import (Angular CLI 6) 3. Testing Angular application using Jest - Jest encountered an unexpected token. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. Step 1: installation: Note that this might also be related to other issues with the dependency injection and parameter type reflection. From the jest-preset-angular docs:. In this blog post, we will explore how to leverage transformIgnorePatterns effectively, Jest failed to parse a file. Exports is not defined . Babel7 Jest unexpected token export. 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. So I need something to do that work. Unexpected token export jest angular. 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. js? We have to make sure you have the base-href set to /. yarn add --dev babel-preset-env You should already have babel-jest. ts:1 ({"Object. We could use babel-jest or ts-jest. mock call, the tests pass for me again. 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. This usually means that you are trying to import a file which Jest cannot parse, e. /common/model/MyModel'; There are several changes that I needed to get this to work. Then update your jest configuration:. By default, if Test suite failed to run 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. And I tried with many solution with jest config, but it didn't work unless and until I have created jest. jsx, such as ButtonGroup. 0 but it fails in Jest 23. The example configuration above should be located in the root directory of your project (where your package. Angular 13 + jest + Unexpected token export jest angular. 28. js file with jest, but it was failing because the component imported a . Experienced the same problem but I managed to solve it by deleting the node_modules folder and the yarn. – Sadra Abedinzadeh Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. json. 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. ts: const { optimize: { CommonsChunkP I had the latest version of nx, i. 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. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". I am also now using Jest 23. 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. By Hi Guys, I'm experiencing a similar issue to this 543 in that I'm receiving unexpected token export. The first method works if for some reason you have to import a css file from node_modules directly. example. Reload to refresh your session. I am using Angular 6+ but I always get this error: src\setup-jest. To fix this error, make sure that the module has a default export or use the export keyword with an object or function. tsx to a relative import: import { MyModel, Type } from '. This is my webpack. 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. Cannot find module @ionic/angular (ionic 4) from test-file . Try Teams for free Explore Teams Jest encountered an unexpected token Jest failed to parse a file. I'll look into this more. Thank you 🙂. <anonymous>":function(module,exports,require,__dirname The issue started when updating Jest from 26. Related questions. @Input() bindings are not reflected into fixture when ChangeDetectionStrategy. test or . I have another repo where transformIgnorePatterns works, but then Jest RUN hangs without errors. 1 #1880. We have recently migrated the code from Angular 13 to Angular 16. 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. Using transformIgnorePatte After this import { Store } from '@ngrx/store'; is working. 0, and it worked. I see the problem in jest 28 and above. babelrc in your project's root directory and add this code there. Jest not parsing es6: SyntaxError: Unexpected token import. 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. js is an HTML document, not a JavaScript file. Jest not work after migrating to Angular 19. /abstractScene. js"; ^^^^^ SyntaxError: Unexpected token 'export' The Jest config transformIgnorePatterns does not work in this repo. This should fix the issue when using @agm/core for an Angular 6 app is being used with jest. I refuse to write my packages with old-skool require() and module. 4. 5 Ask questions, find answers and collaborate at work with Stack Overflow for Teams. ts or example. 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. However, despite following dozens of how-tos and tutorials, I am not able to fix the issue below. npx nx migrate latest didn't create any migration file (so it said). Cannot run Jest tests for components (Failed to load html files) 4. 12. 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. Share. it's not plain JavaScript. You switched accounts on another tab or window. Test suite failed to run. 6. Jest failed to parse a file. 1. ValentinDEJ opened this issue Jan 14, 2025 · 15 comments Comments. js:155) at webpack_require (polyfills. The transform option ensures that your TypeScript test files are transformed with ts-jest. 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. x I'll stick with this solution for now. Unexpected token export with TypeScript project - issue with transformIgnorePattern. /add. I finally found a workaround for this. js:. configureTestingModule({ declarations: [Your-Component], Most of my JEST unit test cases are failing with the recent upgrade. json file. js:53) In my project I was upgraded nodejs version to 20 and after that test cases failed. 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. Learn more Explore Teams Jest encountered an unexpected token Jest failed to parse a file. 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. Jest encountered an unexpected token - import (Angular CLI 6) 1. Your link has expired. js'; ^^^^^ Jest not work after migrating to Angular 19. JEST with Angular SyntaxError: Unexpected token 'export' [duplicate] Ask Question Asked 3 years ago. 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. Cannot read property 'matches' of undefined When installing Jest in Angular . I was using Babel with Webpack. Also, had to set Prettier option endOfLine to auto to essentially ignore CR (carriage-return) errors. Jest encountered an unexpected token - import (Angular CLI 6) 7. So, we need transform the code to a supported module type. Follow answered Sep 22, 2016 at 5:47. Uncaught SyntaxError: Unexpected token export at Object. Out of the box Jest supports Babel, which will be used import { CookieService } from 'ngx-cookie-service'; jest. 5. Jest encountered an unexpected token. 7. "Unexpected token import" when testing Angular with Jest. I had to restart VSCode to get the new lint parser options working. 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. After the updates I got some weird errors when trying to run the unit tests in the project. json which breaks the test that imports that package. g. Stack Overflow. Internally, preact provides a "browser" field, but the file is ESM, which jest does not natively support without a babel transform. Jest encountered an unexpected token - import (Angular CLI 6) 0. 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. 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. 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. 9. x of jest so I think since I'm just now upgrading from 27. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. I was also able to continue using my existing . JEST - unexpected token import while running test. Hot As React applications grow more complex, the patterns that were “just fine” when you were starting out might start to feel limiting. Some vendors publish their sources without transpiling. Jest - unexpected token export. lock file. By default Great! You’ve successfully signed up. restore the ~ and ^; remove the @angular/eslint packages which are still on 13; manually change @angular/cli to 14. We customize some files originally from that 3rd party UX package, the customized files are saved as *. 6. 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. Jest/Ionic 4 beta - import { Platform } from '@ionic/angular'; gets SyntaxError: Unexpected token export in Jest testing, not Ionic. 0. Viewed 7k times 4 . Babel7 Jest unexpected token export . However, your answer fixed this for me. Then you need to create one configuration file with name . Error: (SystemJS) exports is not defined. I was using jest 27, which works fine now. 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. babelrc file. You'll see warnings about the tsconfig. This happe Skip to main content. 4. The problem is happening because jest now looks at the "browser" field in package. e. Jest gives ReferenceError: require is not defined. 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 . 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. 5. I created a minimal example inside a fresh A Unexpected token export jest angular. You've successfully subscribed to Lxadm. Sign up for MSAL for Angular Jest test not working #858. By Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 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. ValentinDEJ opened this issue Jan 14, 2025 · 15 comments Open 1 of 2 tasks. Jest provides babel-jest transpiler out of the box. You need to If I add the jest. jest-preset-angular not working with Angular 13 and ESM module. Check you are serving up what you think you are serving up for the request. config. js:10 export { default as add } from '. I use jest-preset-angular with @angular-builders/jest. ts. For a basic project, that's all that's needed. You signed out in another tab or window. I used this as source and modified as per my requirement. Transpile js files through babel-jest. 249 Jest gives an error: "SyntaxError: Unexpected token export" 4 Unexpected token export jest angular. Notifications You must be signed in to change notification settings; Fork 306; Star 885. OnPush is used . As per the accepted answer @sdgluck, I had to add a babel. Let me know if this works for you or if you have other ideas. npm install --save-dev @babel/core @babel/preset-env. TypeError: (0 , import_core. Jest - unexpected token export . Jest Unexpected identifier - Angular. Provide details and share your research! But avoid . Closed 4 tasks. ts file in all my apps to match your snippet, and it worked. 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. \node_modules\@babylonjs\core\index. This happens e. Core problem is that ts-jest (jest-preset-angular is based on ts-jest) does not transpile JS files. 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. As per enzo's excellent answer, I had to tell ESLint to use Babel as my parser. 0; Then npm update and npx nx migrate --run-migrations were working as expected. I recommend using ts-jest for simplicity. ProjectDir\node_modules\lodash-es\lodash. spec suffix, e. (app. 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. import babelParser from '@babel/eslint-parser'; // Import parser. 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. Copy link nikhil1986m commented Jul 4, 2023. 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. Unexpected token export with jest. kak snmvjn intqr virz snvc mrio geeglovq avdd mprqzl eqc amxb ruin ukyy vcjidp qsslmj