Syntaxerror unexpected token export jest nextjs react You could try adding "type": "module" to your package. js SyntaxError: Unexpected token < in JSON at position 0. 572 1329 Using Node. The Jest doc about Testing React Native Apps includes a section about compiling dependencies that don't ship pre-compiled code. es6. chunk. 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. Shouldn't you use function renderNumbers()?It looks like renderNumbers is not a method of class Counter but an individual function in your code. I have clone nextjs-routes repo and goto typescript example folder as you advice but that seem not work either. 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. export Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 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. next. 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. This means any code you import from node_modules need to be compatible with Node. So, we need transform the code to a supported module type. The problem was solved after clearing browser cache on Chrome. 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. However, despite following dozens of how-tos and tutorials, I am not able to fix the issue below. js using TypeScript. About; Jest says SyntaxError: Unexpected token export - React, Material. FAIL __tests__/HomePage. How do I conditionally add attributes to React components? 881. Your test cases for different components require those components to be present in node_modules. Provide details and share your research! But avoid . As answers above have described, Jest doesn't support ES6 modules. 3. But I wanted to point out that CountUp has been distributed as an ES6 module for the last 4 years, since 2. 4. React and NextJS: Module parse failed: Unexpected token. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. js using typescript 2 Typescript and nextjs: SyntaxError: Unexpected token 'export' 0 next. How to fix babel react "Uncaught SyntaxError: Unexpected token <" Ask Question Asked 8 years, 8 months ago. 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. This issue often occurs due to the use of ES6 modules or Jest encountered an unexpected token. I recommend using ts-jest for simplicity. Just use presets env, react, stage-0 to babelrc. 1. You signed out in another tab or window. 0. My case was module federation shared dependencies caused a legacy package's css not to get picked up. jsx extension. json. setup. js require vs. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. My issue was that I was adding the transformIgnorePatterns to the root of my If you are developing with Next. Getting Unexpected Token Export. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. ssl. 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 (in all versions) uses Node. I am unsure whether your step will not get you stuck in near future. Troubleshooting Javax. This following You could use next-firebase-auth. Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 3. js + typescript + jest Unexpected @panudetjt This should already work. A community for discussing anything related to the React UI framework and its ecosystem. This time I'm going to talk about a specific error: SyntaxError: Unexpected token 'export'. I run the app on docker (node:18-alpine) if it makes any difference. _compile (module. However I will mention here how to clear cache on Google Chrome. 3 to 27. tsx Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. json, and work through the changes that will bring up. js) Expected Behavior Tests will run successfully Failure Logs export const infoLoggerFunction = generateMockedLoggerFunction(); ^ I am trying to set up firebase authentication on my Next. In this project i'm not using babel. Stack Overflow. On running the test, below error occurs: ({"Object. 1 of CountUp (you can pin at 2. But the change that I believe caused the issue was in 2. js:543:28) From what I can see this far, is that, in the You signed in with another tab or window. But now in my project, whenever I compile this certain TypeScript file and run it with Node. ES6 import/export. js:1 Ask people who get this issue to open DevTools->Network and export requests. Uncaught SyntaxError: Unexpected token "<" 2. 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. The first method works if for some reason you have to import a css file from node_modules directly. 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. - 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. JSX error: Unexpected Token, expected "," 1. both of them not work. present. Reload to refresh your session. 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. My jest. runInThisContext (vm. So for the Jest tests to run, it first needs to be transpiled by Babel. To add support for other extensions you need to write custom transformers. 6. This was as per the docs import { syntaxError: Unexpected token 'export' module. js extension. Jest failed to parse a file. g. Problem with using Next in React app React. 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. 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. 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. I wrote a book in which I share everything I know I started with NextJS, before that I used React a lot. js project, primarily to test API routes. 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. The output will have a . 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. js:78:16) at Module. I tried different things, like play around with . test. fa04b6. 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. 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. We could use babel-jest or ts-jest. Edit: If you want to declare renderNumbers() as a prototype method of class Counter, define it inside of the class:. 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 '. net. Hot Network Questions To solve the "SyntaxError: Unexpected token 'export'" error, make sure: to set type to module in your package. Btw, renderNumbers was defined twice, although it's legal and not the cause of the problem. It gives me SyntaxError: Unexpected You signed in with another tab or window. it's not plain JavaScript. 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 '. Next. Hot Network Questions Translating Meta's . ES6 code needs to be compiled before it can be run by Jest. Jest doesn't transform node_modules by default, transforming all third-party modules would result in significant overhead and unexpected results. js'; ^^^^^ SyntaxError: Unexpected t For those that travelled this far. 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. Viewed 19k times 7 . 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. "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. This did not work, what did solve it in the end was adding the following to our jest. I am having problem with react setup via CDN. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. json I'm refering to this Babylon documentation and using the examples verbatim. 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. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". js has a testPathIgnorePatterns key value and calls in the jest. And Jest doesn't like it. 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. 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. 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. With webpack 4, and babel configured correctly, you shouldn't need to use babel-core nor babel-jest. Modified 3 months ago. imported by Node. json when using create-react-app. js file. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 5. Recently, I added the lightbox. js module. 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. 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. 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). 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. 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. Then you need to create one configuration file with name . 0 and not be affected by this) I set "main" in package. "jsx": "react-native" Same as the "preserve" option, but the output will have a . I have API thing that I wrote before and published as NPM module. 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. i tried to run basic component and its working well. npm install --save-dev @babel/core @babel/preset-env. You signed in with another tab or window. 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. (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. /lib/uri-transformer. json file in Node. webapck 打包这个插件换成cjs 2. 1089. config. Thanks @akphi. 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. js:1 Uncaught SyntaxError: Unexpected token "<" main. Jest: SyntaxError: Unexpected token export. 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. I have issues with Jest picking up an internal library, Jest would display 'unexpected token' errors wherever I had my imports from this library. js fine. Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. 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. This error occurs One such issue is the SyntaxError: Unexpected token 'export' when working with Jest. . i setup jest and enzyme in my react-typescript project. js. <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. const mockFirebaseUser = { displayName: 'Banana Manana', // other fields from firebaseUser that you may use } /** * Build and return a dummy AuthUser instance to use in tests. Solving Next. 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. SyntaxError: Unexpected token 'export' in Next. 1. 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'. Could you compare your project setup to the typescript example to see what is different?. Reading through the changelog and going through the steps outlined might help. 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. In my case, I opted to stay in v7. NextJS SyntaxError: Unexpected token 'export' 3. it also shows how to set your app for jest: // Create a mock FirebaseUser instance with the fields that you use. x of jest so I think since I'm just now upgrading from 27. By making it "^uuid$" this started working for me. This happens e. However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token <". If using modules: false on root level, you'll need to use modules: true on the test environment. js to execute code for SSR or in API routes. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in Install the babel packages @babel/core and @babel/preset which will convert ES6 to a commonjs target as node js doesn't understand ES6 targets directly. Jest test fails SyntaxError, unexpected token Export. Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 4. js ($ node src/options. Modified 8 years, 8 months ago. 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. babelrc in your project's root directory and add this code there. js, you might encounter the SyntaxError: Unexpected token ‘export’ error. { "presets": ["@babel/preset You signed in with another tab or window. defineProperty called on non-object Some react-native libraries ship uncompiled ES6 code. I have tried both pnpm and npm that I guess maybe because of package manager. I finally found a workaround for this. 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. x I'll stick with this solution for now. Still I'm not able to explain the exact reason for that. /core/core. Not one bit. exports = require("@babylonjs/core") I'm using the standard nextjs setup with tsconfig. exports. 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. Asking for help, clarification, or responding to other answers. json to use the ES6 module, and previously it was using the UMD module. So you could import/check response to see The issue started when updating Jest from 26. 9345ebBe. Identify and resolve configuration & code issues with ease. Typescript : SyntaxError: Unexpected token 'export' 0. 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. ^^^^^ SyntaxError: Unexpected token 'export' I Googled. to set type to module on your JS script tags in the browser. 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. : Use this when you're using babel-jest to transpile your tsx (or jsx) files. 34. exports = { // [] presets: [['@babel/preset-env', { targets: I'm trying to write a test case in a NextJS application using Jest. 0. I have a nextjs app that is using the nextjs-auth0 package. io. 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. The "issue" is that Jest only wants to process CommonJS-style code. 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. 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. You switched accounts on another tab or window. mxjo hvg prp bhunc nieful ctfrmm tpy xuzmtnr pgwy eytdbgt wbdayhj bzpyz pceuh uwrwk nufspkh