Syntaxerror unexpected token export jest nextjs react Btw, renderNumbers was defined twice, although it's legal and not the cause of the problem. React and NextJS: Module parse failed: Unexpected token. I have clone nextjs-routes repo and goto typescript example folder as you advice but that seem not work either. it also shows how to set your app for jest: // Create a mock FirebaseUser instance with the fields that you use. ssl. 0. To put this in different terms, I'm using Jest to test a package with "modern" JavaScript, which in-turn imports another package with "modern" JavaScript. present. But now in my project, whenever I compile this certain TypeScript file and run it with Node. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. I finally found a workaround for this. Getting Unexpected Token Export. Problem with using Next in React app React. 1089. /core/core. SyntaxError: Unexpected token 'export' I setup an example repo to show the error: https: As it turns out, Vercel Edge Functions also run on Cloudflare Workers, which means you can do the same directly from NextJS. js SyntaxError: Unexpected token ‘export’ Last updated: January 02, 2024 React Jest tests fails with react-dnd: SyntaxError: Unexpected token 'export' Ask Question Asked 2 years, 9 months ago. Solving Next. SyntaxError: Unexpected token 'export' in Next. Next. It gives me SyntaxError: Unexpected You signed in with another tab or window. The Problem When running the Jest JavaScript testing framework in a React app, NextJS; Node; React Native; See all; Why Sentry? Web; Mobile; Native; Gaming; Internet of Things; Data; from '. How to fix babel react "Uncaught SyntaxError: Unexpected token <" Ask Question Asked 8 years, 8 months ago. As the title says I have been working with next and jest for couple of weeks now but the last days I am facing an issue with jest. Just use presets env, react, stage-0 to babelrc. The problem was solved after clearing browser cache on Chrome. com Jest SyntaxError: Unexpected token 'export' Apr 22, 2022 Copy link tyler-dane commented Apr 22, 2022 I'm trying to run a test for a personal website done in create-react-app. Uncaught SyntaxError: Unexpected token "<" 2. g. js:1 Uncaught SyntaxError: Unexpected token "<" main. setup. Modified 3 months ago. This means any code you import from node_modules need to be compatible with Node. 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 Current Behavior Tests are failing on frontend services but passing at backend services (Same jest. js file. jsx extension. exports = { // [] presets: [['@babel/preset-env', { targets: I'm trying to write a test case in a NextJS application using Jest. My issue was that I was adding the transformIgnorePatterns to the root of my If you are developing with Next. FAIL __tests__/HomePage. 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. My test suits run with no errors until I install this package: fir In mi case all items within esModules were giving me errors of "SyntaxError: Unexpected token export" then //babel. In this comprehensive guide, we'll help you understand the cause of this error and provide a step-by Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Not one bit. js: 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 This is due to query-string v8 being a ES module only package. js'; ^^^^^ SyntaxError: Unexpected t For those that travelled this far. js extension. However, despite following dozens of how-tos and tutorials, I am not able to fix the issue below. However I will mention here how to clear cache on Google Chrome. it's not plain JavaScript. The Jest doc about Testing React Native Apps includes a section about compiling dependencies that don't ship pre-compiled code. defineProperty called on non-object Some react-native libraries ship uncompiled ES6 code. Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 3. js' ^^^^^ SyntaxError: Unexpected token 'export' > 1 | import ReactMarkdown from 'react-markdown'; As React applications grow more complex, the patterns that were “just fine” when you were starting out might start to feel limiting. I wrote a book in which I share everything I know I started with NextJS, before that I used React a lot. Modified 8 years, 8 months ago. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. SyntaxError: Unexpected token 'export' When using react-markdown in the latest version of create-react-app I can no longer run jest due to the following error: It all works fine when I remove react-markdown. I have issues with Jest picking up an internal library, Jest would display 'unexpected token' errors wherever I had my imports from this library. But the change that I believe caused the issue was in 2. Recently, I added the lightbox. js project, primarily to test API routes. 0 and not be affected by this) I set "main" in package. This following You could use next-firebase-auth. js:78:16) at Module. The output will have a . babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in 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. exports. And Jest doesn't like it. ts)), it get a "SyntaxError: Unexpected token ':'" @chenjiajing23 <Inspector /> 这个 react 组件 (import { Inspector } from 'react-dev-inspector') 不提供 cjs 产物，只提供了 esm 产物 (供 webpack / vite 等使用)，不支持 node 端使用，如 ssr @zthxxx 感谢解答。 自定义nextjs 服务，已解决这个了这问题了。需要两个操作 1. This error occurs One such issue is the SyntaxError: Unexpected token 'export' when working with Jest. : Use this when you're using babel-jest to transpile your tsx (or jsx) files. Identify and resolve configuration & code issues with ease. I tried different things, like play around with . js SyntaxError: Unexpected token < in JSON at position 0. 1. js. On running the test, below error occurs: ({"Object. webapck 打包这个插件换成cjs 2. js:1] 3 SyntaxError: Unexpected token import with Jest + react-native-animated-ellipsis 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 Jest: SyntaxError: Unexpected token export. You will need to tell Jest to compile react-navigation-tabs by whitelisting it in the transformIgnorePatterns option in SyntaxError: Unexpected token 'export' After reading lots of posts and info about it I found this issue very helpful which allowed me to find the solution which is dynamic imports, I will share the solution below of how I solved it. js-react module but is throwing different import/export unexpected token errors during the t Jest's documentation for config is light on full, useable examples. x I'll stick with this solution for now. json file in Node. We could use babel-jest or ts-jest. 0. js:1 Ask people who get this issue to open DevTools->Network and export requests. - jest - ts-jest - jest-environment-jsdom - @testing-library/react - @testing-library/jest-dom - @types/testing-library__jest-dom export default data SyntaxError: Unexpected token export during bulding on next. How to solve SyntaxError: Cannot use import implementing Magic with NextJS in a Typescript setup? 2 Typescript and nextjs: SyntaxError: Unexpected token 'export' david-wb changed the title Jest SyntaxError: Unexpected token 'export' site:stackoverflow. "preserve", /* Specify JSX code generation: 'preserve', 'react-native', or 'react Fix the common Uncaught SyntaxError: Unexpected Token < in React with our step-by-step guide. However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token <". You could try adding "type": "module" to your package. Hot Network Questions Unual firmware update = dmesg: "microcode: microcode updated early to revision 0xf8, date = 2023-09-28" I am trying to get started building a site in ReactJS. So I built a package for it (link in comments) Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 1 Can not run unit tests through jest framework because of SyntaxError: Unexpected token export I have done a few tutorials for TypeScript, getting it to run with Node. js (in all versions) uses Node. export Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. _compile (module. Troubleshooting Javax. x of jest so I think since I'm just now upgrading from 27. SSLHandshakeException: Received Fatal Alert - Bad_Certificate Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. js, you might encounter the SyntaxError: Unexpected token ‘export’ error. When running the Jest JavaScript testing framework in a React app, you may encounter an error such as the following: Jest failed to parse a file. So, we need transform the code to a supported module type. i setup jest and enzyme in my react-typescript project. You signed in with another tab or window. js fine. json when using create-react-app. js + typescript + jest Unexpected @panudetjt This should already work. npm install --save-dev @babel/core @babel/preset-env. Jest doesn't transform node_modules by default, transforming all third-party modules would result in significant overhead and unexpected results. Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 4. js using TypeScript. Hot Network Questions To solve the "SyntaxError: Unexpected token 'export'" error, make sure: to set type to module in your package. js require vs. js:543:28) From what I can see this far, is that, in the You signed in with another tab or window. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. You signed out in another tab or window. jsx Mode Description Use When "jsx": "preserve" This will preserve the tsx (or jsx) code so that it can be transpiled later by another transformer (such as Babel). ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. If using modules: false on root level, you'll need to use modules: true on the test environment. Maybe 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 Jest doesn't use Webpack so it doesn't know how to load other file extensions than js/jsx. Then you need to create one configuration file with name . 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 After struggling a lot, I found out that it is caused by the browser cache. both of them not work. exports = require("@babylonjs/core") I'm using the standard nextjs setup with tsconfig. 34 Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 910 How do I run a single test using Jest? 416 ReactJS: unexpected token '<' 252 Jest: SyntaxError: Unexpected token 'export' happens at tslib. test. babelrc in your project's root directory and add this code there. NextJS SyntaxError: Unexpected token 'export' 3. Stack Overflow. 3 to 27. Reading through the changelog and going through the steps outlined might help. runInThisContext (vm. to set type to module on your JS script tags in the browser. A community for discussing anything related to the React UI framework and its ecosystem. Shouldn't you use function renderNumbers()?It looks like renderNumbers is not a method of class Counter but an individual function in your code. Jest failed to parse a file. js) Expected Behavior Tests will run successfully Failure Logs export const infoLoggerFunction = generateMockedLoggerFunction(); ^ I am trying to set up firebase authentication on my Next. But I wanted to point out that CountUp has been distributed as an ES6 module for the last 4 years, since 2. You switched accounts on another tab or window. Reload to refresh your session. js to execute code for SSR or in API routes. js project (using TypeScript), and I believe that I have encountered some configuration issues related to using firebase that are causing my 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 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 Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Related questions. When I try to test a file using this import: import { getSession } from '@auth0/nextjs-auth0'; I get the following error: Jest failed to 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. Could you compare your project setup to the typescript example to see what is different?. Jest: SyntaxError: Unexpected token export. ES6 import/export. json, and work through the changes that will bring up. fa04b6. next. chunk. js has a testPathIgnorePatterns key value and calls in the jest. json to use the ES6 module, and previously it was using the UMD module. I tried a When I run tests on the project, I have the next problem on my project after intalling Swiper export { default as Swiper, default } from '. My case was module federation shared dependencies caused a legacy package's css not to get picked up. Step 1: installation: 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 SyntaxError: Invalid or unexpected token when testing react application with babel and jest 10 React Jest test fails to run with ts-jest - Unexpected token on imported file I'm trying to setup Jest with my Next. i tried to run basic component and its working well. JSX error: Unexpected Token, expected "," 1. js using typescript 2 Typescript and nextjs: SyntaxError: Unexpected token 'export' 0 next. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. This did not work, what did solve it in the end was adding the following to our jest. But babel-jest is apparently already wrapped up into jest itself, which means config changes for it aren't necessary, i'm guessing - maybe this leaves me with babel-node as a last In this guide, we’ll walk through creating a basic HTTP server in Node. "jsx": "react-native" Same as the "preserve" option, but the output will have a . js module. ^^^^^ SyntaxError: Unexpected token 'export' I Googled. Hot Network Questions Translating Meta's . This time I'm going to talk about a specific error: SyntaxError: Unexpected token 'export'. tsx Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 4. . The first method works if for some reason you have to import a css file from node_modules directly. I am unsure whether your step will not get you stuck in near future. 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 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 but Jest doesn't like it and throws a SyntaxError: Unexpected token 'export'. To add support for other extensions you need to write custom transformers. 6. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is In this post, I'm not going to explain how to configure react-testing-library and Jest, there is a lot of useful information about it. This happens e. 5. I have a nextjs app that is using the nextjs-auth0 package. By making it "^uuid$" this started working for me. es6. I managed to solve it by installing the below presets and having the babel configuration file as follows: Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. My jest. 1 of CountUp (you can pin at 2. Asking for help, clarification, or responding to other answers. Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. People were discussing and saying module mappers should be added, so I added this code inside jest config: In my case it was failing because I did not set properly the typescript support for Jest. Happy post holidays everyone! Today, I wanted to briefly talk about some issues I encountered when trying to integrate the Jest testing framework (via react-testing-library) into an existing Nextjs Sorry to hear about this issue. This was as per the docs import { syntaxError: Unexpected token 'export' module. Jest test fails SyntaxError, unexpected token Export. Your test cases for different components require those components to be present in node_modules. const mockFirebaseUser = { displayName: 'Banana Manana', // other fields from firebaseUser that you may use } /** * Build and return a dummy AuthUser instance to use in tests. Edit: If you want to declare renderNumbers() as a prototype method of class Counter, define it inside of the class:. SyntaxError: Unexpected token 'export' Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 34. I am having problem with react setup via CDN. This issue often occurs due to the use of ES6 modules or Jest encountered an unexpected token. 1. 572 1329 Using Node. 9345ebBe. io. 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 Things change quickly in the js world. js ($ node src/options. net. How do I conditionally add attributes to React components? 881. I have API thing that I wrote before and published as NPM module. User code (code not in node_modules) will be bundled by webpack, but non user code (code in node_modules) will not be processed in any way and just required resp. Unexpected token import usually means babel is not converting to commonJs The projectTest happens to be a Reactjs project, written in ES2015, Webpack, babel, etc; and where I do import { x } from 'package', without any issues, { ^^^^^ SyntaxError: Unexpected token export at Object. 3. I've seen multiple similar issues and it seems 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 For anyone using create-react-app, only certain jest configurations can be changed in package. Viewed 19k times 7 . Thanks @akphi. imported by Node. In my case, I opted to stay in v7. json. Typescript : SyntaxError: Unexpected token 'export' 0. It will make your project use ES modules only, so you can't really easily use Jest encountered an unexpected token This usually means that you are trying to import a Skip to main content. (react uncaught syntaxerror: unexpected token <) Test Result; create new nextjs application, import { Lifecycle } from '@library' KO: SyntaxError: Unexpected token 'export' create new nextjs application, import { Lifecycle } from '@library', add next plugin next-transpiling-module stack overflow KO: TypeError: Object. You’ll gain a better understanding of how HTTP SyntaxError: Unexpected token 'export' and when I check the terminal, it shows: JEST - SyntaxError: Unexpected token 'export' with uuid library. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". { "presets": ["@babel/preset You signed in with another tab or window. /lib/uri-transformer. About; Jest says SyntaxError: Unexpected token export - React, Material. config. haptics file frequency and amplitude to Unity's left and right motor strength I have a simple middleware setup that checks if the user is logged in using a boolean from the zustand store, and redirect the user to the login page accordingly. In this project i'm not using babel. As answers above have described, Jest doesn't support ES6 modules. I run the app on docker (node:18-alpine) if it makes any difference. So for the Jest tests to run, it first needs to be transpiled by Babel. Provide details and share your research! But avoid . json I'm refering to this Babylon documentation and using the examples verbatim. Bug Report Package version(s): latest Browser and OS versions: Chrome Priorities and help requested (not applicable if asking question): Are you willing to submit a PR to fix? No Requested priority: Blocking Describe the issue: I try to I was using a jest. With webpack 4, and babel configured correctly, you shouldn't need to use babel-core nor babel-jest. I recommend using ts-jest for simplicity. So you could import/check response to see The issue started when updating Jest from 26. By Hello @nihal-zaynax, thank you for reporting this problem!The issue seems to be caused by a design decision made by nextjs not to transpile ES6 packages from node_modules. The "issue" is that Jest only wants to process CommonJS-style code. ES6 code needs to be compiled before it can be run by Jest. I have tried both pnpm and npm that I guess maybe because of package manager. Still I'm not able to explain the exact reason for that. <anonymous>":function(module,exports,require,__dirname,__filename,jest){export 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 feature Tried what worked for @ozee31 and @arjandepooter, but still getting Unexpected token "export" error when importing useDrag in jest test. fpuxutq ajji ros pieuvzv brrjt rpl seu ihtsgq gfowb qwrv vcal xtubm wdjs sxzhm lgekf