Syntaxerror unexpected token export jest angular. spec. Jun 30, 2023 · Jest encountered an unexpected token Jest failed to parse a file. Mar 2, 2024 · To solve the "Uncaught SyntaxError Unexpected token 'export'" error, set the `type` of your `<script />` tags to `module`. js Ask Question Asked 3 years, 11 months ago Modified 3 years, 5 months ago Sep 7, 2021 · Facing issue while running Jest test cases in combination of D3 with Jest and angular. By default, Jest will not transform anything. The jest unexpected token export error is a common error that can be caused by a variety of factors. Haven't you ever been annoyed by the common SyntaxError: Unexpected token 'export' that you get when you forget to downgrade ESM to CommonJS in Jest, and the weird negative regex in transformIgnorePatterns? Jul 4, 2023 · After migration, we tested our components and everything is working fine except the JS tests using the JEST framework. Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to impor Jan 8, 2024 · ckeditor / ckeditor5-angular Public Notifications You must be signed in to change notification settings Fork 114 Star 213 Nov 28, 2022 · When I run my tests using Jest, I got an SyntaxError: Unexpected token ‘export’ from node_modules/@sendbird/chat/sendbird. After updating the node to v20 and triggering Jest tests for certain app Im getting the following error - SyntaxError: Unexpected token ' Of course "export" is a valid syntax, however, most probably some issues which occur during compilation are causing a domino effect which at points to the different place from where the root cause lays. 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. The syntaxerror: unexpected token ‘export’ jest error is a common error that occurs when you are trying to export a function, variable, or object from a JavaScript file. But when i use anything imported from Aug 7, 2018 · Unexpected token export jest angular Asked 7 years, 6 months ago Modified 4 years, 1 month ago Viewed 3k times Nov 25, 2020 · Jest: SyntaxError: Unexpected token export Asked 5 years, 2 months ago Modified 5 years, 2 months ago Viewed 15k times May 11, 2022 · Jest encountered an unexpected token Jest failed to parse a file. Jest encountered an unexpected token Jest failed to parse a file. Oct 7, 2021 · SyntaxError: Unexpected token 'export' (d3zoom) Asked 4 years, 2 months ago Modified 4 years, 2 months ago Viewed 204 times Dec 29, 2025 · 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. 1), tests started failing with the JEST framework. Many of the threads are long. 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. 0. Jun 29, 2022 · Jest SyntaxError: Unexpected token 'export' from node module Ask Question Asked 3 years, 8 months ago Modified 10 months ago Jan 31, 2023 · Jest encountered an unexpected token Jest failed to parse a file. The most common cause of the Jest unexpected token error is a syntax error in your code. Sep 6, 2022 · Jest encountered an unexpected token Jest failed to parse a file. With v16 angular + ngx-charts (20. 14. I set up jest and then I got error SyntaxError: Unexpected token export. Mar 16, 2022 · Debug log SyntaxError: Unexpected token 'export' Additional context It seems to highlight the export issue in the file where function is defined. g. Oct 19, 2025 · The SyntaxError: Unexpected Token 'export' error in Jest TypeScript projects can be a common roadblock, but by understanding the root causes and following the usage methods, common practices, and best practices outlined in this blog post, you can effectively resolve this issue. Jun 3, 2019 · Hello! I get SyntaxError: Unexpected token export when trying to running my test. Default is no Nov 10, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Because the uuid library I upgraded now did not pre-compile its ES modules, I had to transpile it. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". Jest setup "SyntaxError: Unexpected token export" Asked 9 years, 1 month ago Modified 2 years, 4 months ago Viewed 96k times Nov 25, 2020 · Jest: SyntaxError: Unexpected token export Asked 5 years, 2 months ago Modified 5 years, 2 months ago Viewed 15k times The Jest SyntaxError: Unexpected Token ‘export’ is caused when you try to export a module in a way that doesn’t conform to Jest’s expectations. May 22, 2023 · By following these steps, you should be able to resolve the `SyntaxError: Unexpected token ‘export’` error and run your Jest tests on JavaScript files that use ES6 modules or other non Feb 23, 2021 · Depending upon your setup, you might see the error on the first line of the code file or you might see it when the code tries to process JSX. Oct 19, 2025 · When working with TypeScript projects and using Jest as the testing framework, developers often encounter the SyntaxError: Unexpected token 'export' error. Daily Updated! Nov 22, 2021 · Jest encountered an unexpected token Jest failed to parse a file. 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 Discover how to resolve the `SyntaxError: Unexpected token 'export'` issue in Angular tests related to the d3-zoom library, ensuring a smoother testing experience. I tried to add transformIgnorePatterns and moduleNameMapper to my … Nov 23, 2022 · ^^^^^^ SyntaxError: Unexpected token 'export' > 1 | import { v4 as uuid } from "uuid"; | ^ There are several tips on what might be wrong and recommendations on how to resolve it. 0 $ npm -v 6. This error occurs because Jest doesn't natively support ES modules in Typescript files. This error can be frustrating, especially for those new to TypeScript and Jest. Nov 3, 2023 · Jest starts throwing Jest encountered an unexpected token in Angular #9448 New issue Jun 23, 2022 · SyntaxError: Unexpected token 'export' when using loadRemoteModule with jest #194 Open gleisonkz opened this issue on Jun 23, 2022 · 2 comments Jun 27, 2023 · Introduction: Jest, a powerful testing framework for JavaScript and TypeScript projects, occasionally encounters unexpected token errors while parsing files. 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 wh Jul 7, 2021 · Current Behavior On a newly generated Nx project (React), after generating a library and importing lodash-es in its component, when trying to run the tests I get the error: Jest encountered an unexpected token This usually means that you Jan 4, 2025 · Jest Syntaxerror: Unexpected Token ‚export‘ In my case, it was due to a project exporting ESM syntax via . By following the tips in this article, you can help to prevent this error from occurring in your own code. These errors can occur due to non Nov 4, 2021 · [Bug]: Unexpected token 'export' when Jest test imports d3 (7. 1) #12036 Nov 25, 2024 · The described issue is occurring within an nx-workspace, using the mentioned versions above of angular, jest, keycloak-angular and keycloak-js. Oct 23, 2023 · If you're seeing this error due to a third-party package that's using ES modules, you may need to tell Jest to transform that package. These errors can occur due to non Jan 20, 2026 · Jest unit test in Angular app is throwing "Jest encountered an unexpected token" error I'm receiving email messages from a local mail server and I need to be able to parse them in JavaScript. Sep 19, 2023 · Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. config. This might be a simple typo. Dec 11, 2020 · FAIL tests/unit/example. The Jest SyntaxError: Unexpected Token ‘export’ is caused when you try to export a module in a way that doesn’t conform to Jest’s expectations. May 25, 2021 · Cant resolve "SyntaxError: Unexpected token 'export'" using jest in @nrwl monorepo angular 11 Ask Question Asked 4 years, 9 months ago Modified 4 years, 7 months ago We would like to show you a description here but the site won’t allow us. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in 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. 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 Sep 27, 2016 · "SyntaxError: Unexpected token export (…)" Ask Question Asked 9 years, 5 months ago Modified 9 years, 5 months ago Nov 23, 2022 · ^^^^^^ SyntaxError: Unexpected token 'export' > 1 | import { v4 as uuid } from "uuid"; | ^ There are several tips on what might be wrong and recommendations on how to resolve it. Aug 17, 2020 · I am using Jest for testing my Angular application but am getting the following errors: Test suite failed to run Jest encountered an unexpected token This usually means that you are try 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. 1) #12036 The Jest unexpected token error occurs when Jest encounters a token that it does not expect. es6. I've purged node sudo apt-get purge nodejs and reinstalled and removed ng sudo npm remove -g @angular/cli then reinstalled again sudo npm install -g @angular To fix the SyntaxError: Unexpected token export jest error, you need to add the `module. Mar 17, 2020 · Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Jul 8, 2025 · The JavaScript exceptions "unexpected token" occur when the parser does not see a token it recognizes at the given position, so it cannot make sense of the structure of the program. js. Oct 14, 2024 · Im working on a NestJS project which used to run on node v16. The Jest SyntaxError: Unexpected Token Export means that the JavaScript parser encountered an unexpected token when it was trying to parse your code. . This guide will help you troubleshoot the error and get your Jest tests running again. May 5, 2025 · Jest encountered an unexpected token Jest failed to parse a file. Oct 31, 2024 · When working with Typescript and Jest for testing your code, you may encounter the error "SyntaxError: Unexpected token 'export'" in your test files. Here is Also further description of the problem: As problem suggests I am using TypeScript which is why I added ts-jest Jest encountered an unexpected token. Full output: PASS src/app/diary/components/diary The Jest SyntaxError: Unexpected Token Export means that the JavaScript parser encountered an unexpected token when it was trying to parse your code. Apr 17, 2025 · Jest encountered an unexpected token when running jest test in Angular 17 #7920 Mar 29, 2022 · Angular 13: Uncaught SyntaxError: Unexpected token 'export' Asked 3 years, 11 months ago Modified 3 years, 11 months ago Viewed 2k times Jest SyntaxError Unexpected Token: Learn how to fix the Jest SyntaxError Unexpected Token error with step-by-step instructions and code examples. The threads span a number of years - meaning that the issue keeps cropping up for people repeatedly. This can happen for a number of reasons, but the most common cause is when you forget to add the `export` keyword to the declaration of a variable or function. Jan 17, 2018 · thymikee / jest-preset-angular Public Notifications You must be signed in to change notification settings Fork 306 Star 885 Of course "export" is a valid syntax, however, most probably some issues which occur during compilation are causing a domino effect which at points to the different place from where the root cause lays. js and Jest interpreting that as CommonJS, despite following all the guides to overwrite transformIgnorePatterns. Aug 7, 2018 · Unexpected token export jest angular Asked 7 years, 6 months ago Modified 4 years, 1 month ago Viewed 3k times Sep 15, 2024 · ES Modules use the export syntax to export a module, while CommonJS uses the exports object. Jun 11, 2025 · Jest test fails due to ESM syntax in 'gridstack/dist/angular' - SyntaxError: Unexpected token 'export' #3073 Closed boopathy435 opened on Jun 11, 2025 · edited by boopathy435 Dec 2, 2022 · When I run my tests using Jest, I got an SyntaxError: Unexpected token ‘export’ from node_modules/@sendbird/chat/sendbird. Jest uses Babel to compile JavaScript ES Modules to CommonJS, using the @babel/plugin-transform-modules-commonjs Babel plugin. it's not plain JavaScript. test script Feb 10, 2024 · 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 is the recommended solution in bullet number 3. Nov 4, 2021 · [Bug]: Unexpected token 'export' when Jest test imports d3 (7. May 3, 2022 · Version 28. Sep 24, 2020 · $ node -v v14. 8 $ ng new test Unknown error: SyntaxError: Unexpected token 'export' $ ng -v Unknown error: SyntaxError: Unexpected token 'export' I installed it via sudo npm install -g @angular/cli which gave no errors. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in jest. Dec 24, 2023 · When running Jest tests with tsx (or jsx) React components, you might encounter the " SyntaxError: Unexpected token '<' " error like the following: Jest encountered an unexpected token Jan 5, 2019 · Issue : I am using ts-jest to test my typescript library. For a basic project, that's all that's needed. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. This happens e. 2) all the javascript tests are working fine but with the latest one (20. A: To fix the syntax error “unexpected token ‘export'” in Jest, you will need to make sure that the variable or function that you are trying to export is declared in the current scope. Jest failed to parse a file. 12. Discover how to resolve the `SyntaxError: Unexpected token 'export'` issue in Angular tests related to the d3-zoom library, ensuring a smoother testing experience. In order to use lodash-es, I had to set transformIgnorePatterns to inlude the pa May 31, 2019 · Before passing your files to jest, ts-jest will transpile the Angular TypeScript files to javascript and put them in commonjs syntax, so jest can load them and test them without any problem. Jul 1, 2025 · Jest encountered an unexpected token Jest failed to parse a file. Here's what you can do: Dec 28, 2022 · Jest encountered an unexpected token Jest failed to parse a file. Jul 7, 2021 · Current Behavior On a newly generated Nx project (React), after generating a library and importing lodash-es in its component, when trying to run the tests I get the error: Jest encountered an unexpected token This usually means that you Mar 21, 2022 · Jest: SyntaxError: Unexpected token 'export' happens at tslib. I tried every option with similar issues, but I can't get it to work. 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. Sep 16, 2022 · Jest encountered an unexpected token Jest failed to parse a file. May 14, 2020 · Hi i have problems to run a test with an amcharts import on angular 9 project with jest. 3 Steps to reproduce Full PR with the failing build is here OctoLinker/OctoLinker#1563 Expected behavior Prior to v28 this project built just fine, but now we're getting SyntaxError: Unexpected token 'export' errors from the jsonpath-plus package. Oct 12, 2018 · First of all, thanks for bringing Jest to Angular! I previously had configured Jest in my Angular project by myself. Nov 22, 2021 · Jest failed to parse a file. Packages in node_modules are expected by jest to not be required to transform. exports` object to the file that you’re trying to export from. 1. AngularFix contains a large number of fixes for Angular, AngularJS, Typescript, HTML, CSS and Javascript related issues. As far as I can tell that package has the correct exports for use with jsdom like we Nov 3, 2023 · Jest starts throwing Jest encountered an unexpected token in Angular #9448 New issue Mar 2, 2024 · To solve the "Uncaught SyntaxError Unexpected token 'export'" error, set the `type` of your `<script />` tags to `module`. Mar 28, 2024 · Jest encountered an unexpected token Jest failed to parse a file. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. Feb 27, 2023 · Jest encountered an unexpected token Jest failed to parse a file. Default is no Jun 27, 2023 · Introduction: Jest, a powerful testing framework for JavaScript and TypeScript projects, occasionally encounters unexpected token errors while parsing files. 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. I use the guide described here to install jest on an angular project. Aug 21, 2017 · I have problem with jest vs angularfire2. Using version 26 instead of 25 of keycloak-js is causing problems for us. To fix this error, make sure that the module has a default export or use the export keyword with an object or function. 4 days ago · Class system Creating custom widgets Accessibility Testing with Jest Upgrading Migrating Build for production 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. 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 . js:1. 4. I tried to add transformIgnorePatterns and moduleNameMapper to my … Mar 28, 2024 · Jest encountered an unexpected token Jest failed to parse a file. You can do this by adding the following code to the top of the file: Sep 16, 2022 · Jest encountered an unexpected token Jest failed to parse a file. This can happen for a number of reasons, but the most common cause is when you forget to use the `export` keyword. uycs nraisv rcwzb gdhkw ylxibus urb nytgxsq gpptj uksv lpd