Syntaxerror unexpected token export jest nextjs json 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 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 // ⛔️ Uncaught SyntaxError: Unexpected token 'export' export class Person {constructor (first) {this. Jest gives an error: "SyntaxError: Unexpected token export" 2 Test Vue with Jest fail, Jest encountered an unexpected token, SyntaxError: Unexpected token import As React applications grow more complex, the patterns that were “just fine” when you were starting out might start to feel limiting. Related questions. If so the issue is that while deploying on Vercel you are server rending your app and the API endpoint is not available yet. exports are CommonJS. 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. g. js' import abLoopPlugin from 'videojs-abloop' abLoopPlugin(window,videojs); package. js to execute code for SSR or in API routes. 81 1 1 gold badge 1 1 silver badge 5 5 bronze badges. js:FetchError: invalid json response body Unexpected token < in JSON at position 0. This happens e. Labels . I get this error: C:\Users\myname\Projects\ConfigEditor\MesConfiguration. json file on root directory. You may need to look at something like babel-jest to 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 @panudetjt This should already work. html. Also, getStaticProps does not have access to the incoming request (such as query parameters or HTTP headers) see getStaticProps docs. This is one way for backward compatibility. 614 Unknown file extension ". parse Hot Network Questions Omission of articles in older texts in latest jest you do not need ts-jest and ts-node-dev, you also do not have to include jest. js (February 2017):. Jest SyntaxError: Unexpected Token ‘export’ Jest is a popular JavaScript testing framework. Marcus, a seasoned developer, brought a rich background in developing both B2B and consumer software for a diverse range of organizations, including Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Great! You’ve successfully signed up. /src/styles into the build command. This can happen for a number of reasons, but the most common cause is when you forget to use the `export` keyword. json – Daniel Commented Sep 30, 2024 at 16:58 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 Thanks, exactly what I was missing in my config. Viewed 1k times 6 . I can't find an answer or think of a reasonable explanation as to why everything works when I'm developing on localhost, but things constantly module. Why does fresh Next. js'; ^^^^^^ SyntaxError: Unexpected t How are you running your tests? Do you run them also using Webpack? Or even babel-node?The issue is Webpack understands that this code needs bundled where as if you are just trying to run tests via Node then Node won't understand that, in fact unless you have ESM enabled, it won't even understand import. /src there are server, two react entry points (one for client and one for admin) and styles, so I've also added --ignore . 1 React and NextJS: Module parse failed: Unexpected token . /jest. Here’s an example: 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 Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. Both methods receive the request successfully but when trying t Issue : I am using ts-jest to test my typescript library. GalDayan opened this issue Feb 14, 2022 · 3 comments Assignees. import and export are ES6. In the Auth Context I import things I need 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 Those who are using create-react-app and trying to fetch local json files. Next. The issue started when updating Jest from 26. first = first;}} # Set the type property to module in your package. Now I want to test multiple components together, and I immedia Unexpected token < in JSON at position 0 means the JSON returned by the API is not valid. This following And I tried with many solution with jest config, but it didn't work unless and until I have created jest. igor. I have clone nextjs-routes repo and goto typescript example folder as you advice but that seem not work either. js app?. Reload to refresh your session. New-line characters. 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. You've successfully subscribed to Lxadm. Closed GalDayan opened this issue Feb 14, 2022 · 3 comments Closed SyntaxError: Unexpected token 'export' NX on NextJS #8956. Could you compare your project setup to the typescript example to see what is different?. json: index. exports = require("@babylonjs/core") I'm using the standard nextjs setup with tsconfig. 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 One other gotcha that can result in "SyntaxError: Unexpected token" exception when calling JSON. js 12 : ESM Imports, but I think it is not related to this problem Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. I saw it on line 1, because line 1 is almost always occupied by an import statement - The package is using ESModules which Next. js (in all versions) uses Node. both of them not work. From James M Snell's Update on ES6 Modules in Node. To distinguish between files containing Node Modules and files containing ECMAScript Modules, the latter need to be named . json file. The most important thing is consistency. This means any code you import from node_modules need to be compatible with Node. There is no need to use Babel for ECMAScript Modules, only if you want to use features of ECMAScript that are not supported by Node. #9635 #9404 #9446 I use openresty (ran in docker) to build reverse proxy between my OpenWebUI and a public url. exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins 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. js ala "test": "jest --config=. json. Note that Node. We could use babel-jest or ts-jest. 1 JSX error: Unexpected Token, expected "," 9 Next. json but not working, and for the github answer I don't think is related because I can run the app in Android Simulator but not working in Jest Testing. Improve this question. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. js 12 supports out of the box, but it's probably missing something, maybe "type": "module" in its package. You signed out in another tab or window. Thanks for any help. Work is in progress but it is going to take some time — We’re currently looking at As React applications grow more complex, the patterns that were “just fine” when you were starting out might start to feel limiting. js:13441 Warning: Detected multiple renderers concurrently rendering the same context provider. 1. So, we need transform the code to a supported module type. Thank you 🙂. I have used transformIgnorePatterns in jest config file which help us ignore node_modules which not supporting current nodejs version The only way I could get this to work for myself was to add: { "targets": { "node": "current" } } So that my presets read: I two files : index. zip file, here's the tsconfig. Marcus, a seasoned developer, brought a rich background in developing both B2B and consumer software for a diverse range of organizations, including Thanks for reporting this. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. Typescript and nextjs: SyntaxError: Unexpected token 'export' 0. It's trying to use ES modules syntax (import / export) but to do that, it needs to declare it in its package. 1. On running the test, below error occurs: ({"Object. However, your answer fixed this for me. Marcus Greenwood Hatch, established in 2011 by Marcus Greenwood, has evolved significantly over the years. This did not work, what did solve it in the end was adding the following to our jest. Works like a charm 👍 – Anton Egorov 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 SyntaxError: Unexpected token 'export' NX on NextJS #8956. WebClient\node_modules\tslib\tslib. Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. I have tried both pnpm and npm that I guess maybe because of package manager. To solve this, you need to eject the app and modify the webpack-dev-server configuration file. bundle. ts" for a Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom 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; +1 to @Bergi's comment. js SyntaxError: Unexpected token ‘export’ Last updated: January 02, 2024 Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Additional context. To add support for other extensions you need to write custom transformers. An asynchronous function is declared inside the effect callback since react hooks are also synchronous. import videojs from 'video. 1a152b6. React doesn't work like that, the render function is 100% synchronous and should be free of side-effects. 532 Node. 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). Essentially my pack contains a few different classes and I try to export them in index so the code using this package has access . js:1 Uncaught SyntaxError: Unexpected token < vendor. So you are getting . 5. Modified 1 year, 11 While import is indeed part of ES6, it is unfortunately not yet supported in NodeJS by default, and has only very recently landed support in browsers. json file: Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Follow asked Sep 12, 2021 at 17:09. js --silent",. If you can, consider migrating to modern test frameworks, like Vitest. 3 but succeeded on jest 29. js, you might encounter the SyntaxError: Unexpected token ‘export’ error. e. json pointed to an external jest. js and package. 94d0113. I hope I can make it work. 0. js - SyntaxError: Unexpected token import. FAIL __tests__/HomePage. json { "type": "module" } What I have checked. igor script. Jest: SyntaxError: Unexpected token 'export' happens at tslib. js:24 I had the latest version of nx, i. ts file in all my apps to match your snippet, and it worked. To save people from having to unpack the . ) (For a full list see the String section here. js config which is async module. Navigation Menu Toggle navigation. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. json file To solve the error, set the type property to module in your package. es6. Hot Network Questions How can magic which You tried to make your GetSlides component async. js app have this error? 0. [next-auth][error][client_fetch_error] NextAuthJS CredentialsProvider "providers SyntaxError: Unexpected token < in JSON at position 0" Ask Question Asked 3 years, 3 months ago. tsx Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. js:1 Uncaught SyntaxError: Unexpected token < main. require and module. Your link has expired. js application using the jest command: This error could be caused by a number of issues and is If you are developing with Next. To use the export/import keyword, you need to activate the ESM specification. js files: tsconfig. This issue often occurs due to the use of ES6 modules or It appears to me that there is an issue in the package you're using. SyntaxError: Cannot use import statement outside a module in typescript. Provide details and share your research! But avoid . EDIT: This failed on jest 29. imported by Node. So I increased the time Skip to content. Modified 1 year, 10 months ago. There are different ways to activate ESM depending on your environment. json and Next tries to Running into the following error when trying to run unit tests for a Next. Step 1: installation: Hi redwood community! I am trying to use react-markdown in a new redwood 4. mjs" or Dynamic Import anywhere in the code: const myClass = await import(". Node. I have a monorepo with 3 packages, namely: web-app: A NextJS 12 project in Typescript web-core: A redux-toolkit project used in web-app web-ui: A storybook project with components which are being I was using a jest. You cannot mix and match. The output will have a . Stack Overflow. Viewed 297 times Part of Google Cloud Collective 0 I'm trying to test a page in NextJs that has a firebase context provider that initializes firebase and another that controls access to firebase/auth. js; node-modules; Share. json: Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. When I run tests on the project, I have the next problem on my project after intalling Swiper export { default as Swiper, default } from '. exports = createJestConfig(customJestConfig); I'm trying to write a test case in a NextJS application using Jest. To activate ESM support in the browser, you need to specify the type="module" attribute in the <script> tag. 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 which Jest cannot parse, e. Ask Question Asked 2 years, 11 months ago. Asking for help, clarification, or responding to other answers. js:1 So, it seems like it is a misplaced character but in my local As answers above have described, Jest doesn't support ES6 modules. Do the data fetching in an useEffect hook and store result in local component state. ) 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: Unexpected token 'export' relating to the index file. Commented Sep 12, NextJS Jest SyntaxError: Unexpected token 'export' Ask Question Asked 1 year, 10 months ago. As in create-react-app, webpack-dev-server is used to handle the request and for every request it serves the index. This is incorrect. Maybe syntaxError: Unexpected token 'export' module. mjs extension. There are no module issues there, as long as a number of other issues you may find with Jest. Things will not go well if you do. Follow edited Jul 12, 2022 at 19:19. Spun my wheels with this for 20 minutes before I realized that my scripts in package. d6f56a1. 1553fdd. 3 project with typescript. ts file under the api folder that currently contains 2 different methods POST and DELETE. js extension. config. You switched accounts on another tab or window. x I'll stick with this solution for now. 0 NextJS - react_devtools_backend_compact. I've been trying to figure this out for the past week. I checked about the ESM imports but Node. js supports ECMAScript Modules natively. Bug Report I have noticed relevant discussion and issue here. – Sadra Abedinzadeh Solving Next. Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom 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 You signed in with another tab or window. js: Uncaught SyntaxError: Unexpected token < inline. I am wondering what I might be doing wrong. Jest is historically bad with ESM and I don't believe they support it properly yet. json I'm refering to this Babylon documentation and using the examples verbatim. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is I have a web app using Next 13 with a route. When I try running tests for any component that uses react-markdown I get some issues here Jest encountered an unexpected token Jest failed to parse a file. // createJestConfig is exported this way to ensure that next/jest can load the Next. x of jest so I think since I'm just now upgrading from 27. I recommend using ts-jest for simplicity. js:1 Uncaught SyntaxError: Unexpected token < polyfills. It’s fast, flexible, and easy to use. test. 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; Angularjs:SyntaxError: Unexpected token ' in JSON at position 97 at JSON. Export default Error: The default export is not a React Component in page: "/" 5. "jsx": "react-native" Same as the "preserve" option, but the output will have a . SyntaxError: Unexpected token 'export' in Next. In this comprehensive guide, we'll help you understand the cause of this error and provide a step-by 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. Moved the moduleNameMapper config to that file and then it worked. – Pointy. npx nx migrate latest didn't create any migration file (so it said). /core/core. it's not plain JavaScript. Activate ESM support in the browser. js. 1 NextJS: TypeError: Cannot read property 'json' of I will try to implement the code the way you mentioned and see what I can get. Another way to import ES6 module from CommonJS is to rename your ES6 module file to have . jsx extension. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your I'm assuming that DOMAIN_NAME refers to the same Next. parse() is using any of the following in the string values:. So basically my problem is that the response is not what I'm expecting and I'm not prepared to handle a different kind of response? SyntaxError: Unexpected token 'expor Skip to main content. I finally found a workaround for this. mjs"); I am now using React Jest to test code. ts" for a TypeScript file. <anonymous>":function(module,exports,require,__dirname,__filename,jest){export SyntaxError: Unexpected token 'export' The issue started when updating Jest from 26. script. /MyClass. json file fully fixes the attached zip file. 3 to 27. But even the best frameworks can sometimes throw errors. Maybe Jest doesn't use Webpack so it doesn't know how to load other file extensions than js/jsx. : Use this when you're using babel-jest to transpile your tsx (or jsx) files. 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. Add a transform for js which uses babel-jest-- Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Update my tsconfig to output commonJS modules Update my tsconfig to allowJs:true and update my jest transforms to parse JS with ts-jest export { download }; ^^^^^ SyntaxError: Unexpected token 'export' javascript; function; export; Share. com. javascript; node. 3. json and jest. 6. it's not pla SyntaxError: Unexpected token '<', "<!DOCTYPE " is not valid JSON . js:1] 95 Importing images breaks jest test 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. . 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 @Elango for the answer in stackoverflow I already had it in package. mjs. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". ts to tsconfig. Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 1 Can not run unit tests through jest framework because of SyntaxError: Unexpected token export EDIT: Removing the rootDir parameter from the tsconfig. Welcome back! You've successfully signed in. Sign in Product GitHub Copilot. Then in your CommonJS code, you can import like this: Top of file import: import myClass from ". If a component is single, and not importing anything else, "npm test" runs smoothly. Modified 2 years , 4 months ago. Tabs (yes, tabs that you can produce with the Tab key!) Any stand-alone slash \ (but for some reason not /, at least not on Chrome. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Your code has to be in a module, as recognized by whatever environment is involved. In . I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns 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 One such issue is the SyntaxError: Unexpected token 'export' when working with Jest. By making it "^uuid$" this started working for me. I updated my jest. See browser compat table on MDN and this Node issue. js:1] 3 SyntaxError: Unexpected token import with Jest + react-native-animated-ellipsis. Earlier this config was in package. blocked: repro needed outdated scope: testing tools Issues related to Cypress / Jest / Next. SyntaxError: Unexpected token < in JSON at position 0. msbji ruhcy hnciv fxoj tlm fmvvnz cutv ewq fsfvto yfbp zoymdde bjxzs cown xksbgo lvdsm