Syntaxerror unexpected token export jest typescript react JEST - unexpected token import while running test. 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 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. – Sadra Abedinzadeh Try setting ""type": "module"," in you package. Felix Kling had it right, I needed the babel preset (@babel/preset-typescript) in my . How do I conditionally add attributes to React components? 9. How to solve SyntaxError: Cannot use import implementing Magic with NextJS in a Typescript setup? 2 Typescript and nextjs: SyntaxError: Unexpected token 'export' Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. 34. Marcus Greenwood Hatch, established in 2011 by Marcus Greenwood, has evolved significantly over the years. js file with jest, but it was failing because the component imported a . ^^^^^ SyntaxError: Unexpected token 'export' 2 | import { Box, Stack, Typography, Button, useMediaQuery } from "@mui/material"; 3 reactjs; typescript; jestjs; ts-jest; Share. : Use this when you're using babel-jest to transpile your tsx (or jsx) files. 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 for contributing an answer to Stack Overflow! Please be sure to answer the question. js'; ^^^^^ SyntaxError: Unexpected token 'export' 7 | 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. As per the accepted answer @sdgluck, I had to add a babel. Thank you! I'm assuming the reason this works is because it's working around the build-time loader and using an ES6 friendly loader, next/dynamic. because it is a JS file with TS syntax, or it is published to npm as uncompiled source files. However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token <". Modified 1 year, reactjs; typescript; jestjs; Share. Jest failed to parse a file. If you are getting same problem. js files as EsModule files, instead of as CommonJS files. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. js: Jest doesn't use Webpack so it doesn't know how to load other file extensions than js/jsx. However, despite following dozens of how-tos and tutorials, I am not able to fix the issue below. Asking for help, clarification, or responding to other answers. 1089. Prerequisites I confirm my issue is not in the opened issues I confirm the Frequently Asked Questions didn't contain the answer to my issue Environment check I'm using the latest msw version I'm using Node. The "issue" is that Jest only wants to process CommonJS-style code. msal react typescript jest tests are failing #6788. Provide details and share your research! But avoid . This time I'm going to talk about a specific error: SyntaxError: Unexpected token 'export'. I updated my jest. 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'. 39. SyntaxError: Invalid or unexpected token when testing react application with babel and jest. SiddAjmera SiddAjmera. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. /v1. I managed to solve it by installing the below presets and having the babel configuration file as follows: I see you are exporting the component directly which belongs to another file without importing it. React Jest - Unexpected token import. Troubleshooting Javax. io. Recently, I added the lightbox. 0 Jest encountered an Typescript and nextjs: SyntaxError: Unexpected token 'export' 0. 0. Follow Jest gives an error: "SyntaxError: Unexpected token export" 1089 I have a problem with the unit tests of my React project, it is configured to be compiled with webpack, however when executing the unit tests they are giving me this error: SyntaxError: Unexpected token 'export' This is my jest. You switched accounts on another tab or window. 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. Ask Question Asked 5 years, 2 months ago. json. js:1] 5 TypeScript Property 'navigation' is missing in type but required in type 'Props' React Native 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 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). Thank you 🙂. I tried different things, like play around with . My jest. 23 November 2022. Jest I am having the same issue. I have issues with Jest picking up an internal library, Jest would display 'unexpected token' errors wherever I had my imports from this library. While using old babel version everything worked fine, but because of some project problems we had to upgrade babel to 7 Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 22. Unexpected token 'export' in lodash-es. To add support for other extensions you need to write custom transformers. 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 Jest encountered an unexpected token. Jest test fails SyntaxError, unexpected token Export Hot Network Questions Unual firmware update = dmesg: "microcode: microcode updated early to revision 0xf8, date = 2023-09-28" Jest encountered an unexpected token. 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 . It seemed no amount of configuring did the trick until I started expanding on Fernanda Duarte's answer, using some inspiration from another answer (that I can't find right now, apologies to its author). This causes node to handle *. 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. 1. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. How to resolve "Cannot use import statement outside a module" from Jest when running tests? Hot Network Questions SyntaxError: Unexpected token 'export' in Nodejs project with Typescript and Webpack. Jest SyntaxError: Unexpected token < 416. Then you need to create one configuration file with name . However, I am seeing jest tests choke when using such imports with SyntaxError: Unexpected token export errors. Tip! Mock jsdom location with Jest # javascript I ran into a similar situation where I wanted to test a React component . TS react Jest SyntaxError: Unexpected token '<' Ask Question Asked 1 year, 9 months ago. SSLHandshakeException: Received Fatal Alert - Bad_Certificate I had the latest version of nx, i. Jest cannot seem to parse the dependency because its public api file includes "export" keywords. 10. Jest: Test suite failed to run, Unexpected token = 4. Introduction: Jest, a powerful testing framework for JavaScript and TypeScript projects, occasionally encounters unexpected token errors while parsing files. . I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. About; Jest says SyntaxError: Unexpected token export - React, Material. jsx extension. js extension. babelrc in your project's root directory and add this code there. In this article, we will discuss the possible Issue : First of all, I’m not sure if this is a ts-jest issue or not, so sorry if I’m not reporting this in the proper place. Running with jest and react-testing-library. /MsalContext. when your code or its dependencies use non-standard SyntaxError: Unexpected token 'export' The issue started when updating Jest from 26. For those that travelled this far. 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'm trying to run a test for a personal website done in create-react-app. Expected behavior I'm getting SyntaxError: Unexpected token 'export' on some node_modules, which are not transpiled (I guess?). com Jest SyntaxError: Unexpected token 'export' Apr 22, 2022 Copy link tyler-dane commented Apr 22, 2022 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 @krizzu, no help, at least, with the "Jest setup file" option. I finally found a workaround for this. Webpack fails to parse typescript files. The way you are doing it is a ES8 Proposal. This happens e. Not one bit. The first method works if for some reason you have to import a css file from node_modules directly. it's not plain JavaScript. css stylesheet. ts' , it should be node . You will need to tell Jest to compile react-navigation-tabs by whitelisting it in the transformIgnorePatterns option in Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins data-jest-file-name: The name of the file (e. 'some-image') data-testid: Same as data-jest-svg-name, but works with @testing-library/react getByTestId() So if you want to find the rendered element in your test by attribute you have to pass in some other attributes. I too encountered this when using react-markdown v9. Improve this question. /list' and then import as. So the final fix was: Update the imports Jest encountered an unexpected token. However, your answer fixed this for me. Ask Question Asked 2 years, 5 months ago. I see the problem in jest 28 and above. ssl. Follow Typescript : SyntaxError: Unexpected token 'export' 0. I am trying to get started building a site in ReactJS. { "presets": ["@babel/preset Jest (typescript): SyntaxError: Unexpected token 'export' (lowdb) Ask Question Asked 2 years, -- Jest setup "SyntaxError: Unexpected token export" Add a transform for js which uses babel-jest-- Jest encountered an unexpected token - SyntaxError: Unexpected Jest says SyntaxError: Unexpected token export - React, Material. Module parse failed: Unexpected token Jest test fails SyntaxError, unexpected token Export. Table of Contents. json for jsdom. SyntaxError: Unexpected token 'export' Babel Jest, React project. Share. 252 Jest gives an error: "SyntaxError: Unexpected token export" 1 Cannot use import statement outside a module - jest + nextj. The Jest doc about Testing React Native Apps includes a section about compiling dependencies that don't ship pre-compiled code. Don't listen to past me, past me was 2 weeks into this problem and couldn't think straight. The project builds like it should so I find myself wondering if we ever needed those lines. Weirdly this may be somehow related to using enums? See the reproducible demo below. Improve this answer. "jsx": "react-native" Same as the "preserve" option, but the output will have a . You signed out in another tab or window. js. My case was module federation shared dependencies caused a legacy package's css not to get picked up. 3 project with typescript. So to be clear, I've followed the instructions to include 2 lines in my setup file, AND included the transformIgnorePatterns you suggested. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. While running tests using Jest, an error occurred due to an unexpected token 'export' in the 'react-markdown' package. Noe that changes the handling of any *. The problem is happening because jest now looks at the "browser" field in package. Modified 2 years, 5 months ago. js version 14 or higher Browser So I'm trying to write tests on my React Native app with Jest and TypeScript. Reactjs npm module. Cause: babel-jest uses babel configuration that is loaded based on the location of the file that is going to be transformed. Modified 2 years, Typescript : SyntaxError: Unexpected token 'export' 3. Would someone be able to share a working config for Jest or help me out in any other way? SyntaxError: Unexpected token export. /lib/uri-transformer. Closed ranshine opened this issue Dec 26, 2023 · 6 comments Closed MsalContext } from '. Viewed 1k times 4 . to set type to module on your JS script tags in the browser. 1. May be you are doing 'node . Cant export classes/anything in typescript - unexpected token I'm trying to run unit tests for a TypeScript project which uses another TypeScript project I've created as a dependency. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in jest. 2. For anyone using create-react-app, only certain jest configurations can be changed in package. js (I tried to get jest to ignore sendbird, but to no avail): Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. json probably contains: "babel": { "presets": [ "react-app" ] } which makes import/export statements work for your files, but @amcharts/amcharts4 does not have that setting in its package. This usually means that you are trying to import a file which Jest cannot parse, e. 6. Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. Reload to refresh your session. Fix "Jest encountered an unexpected token" with "create-react-app" # jest # testing # react # javascript. export {default as UserList} from '. js file Sentry Answers > React > Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' from '. I wrote a book in which I share everything I know Hi redwood community! I am trying to use react-markdown in a new redwood 4. json file in Node. js files of the current package, if you want to mix EsModule david-wb changed the title Jest SyntaxError: Unexpected token 'export' site:stackoverflow. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is 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 Issue with jest "Unexpected token 'export'" Related questions. json when using create-react-app. js:1] 95 Importing images breaks jest test 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. ts file in all my apps to match your snippet, and it worked. Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' 3. <anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Jest Unexpected Token in TypeScript. Currently, I’m migrating a react project Typescript but to do it as fast as possible and avoid more problems I’m leaving the tests in javascript but when I try to run the tests in my project, jest throws this exception: To solve the "SyntaxError: Unexpected token 'export'" error, make sure: to set type to module in your package. This did not work, what did solve it in the end was adding the following to our jest. /modules/user'; Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 3 to 27. json nor does it have 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 Having trouble running Jest tests: `SyntaxError: Unexpected token <` 5. 0. The Error; Default is no compilation; Adjust Transformation Configuration from '. js:1] 95 Importing images breaks jest test Some react-native libraries ship uncompiled ES6 code. This means that a file is not transformed through TypeScript compiler, e. e. import { UserList } from '. It seems that because of the new ESM format of this module, jest really has trouble with. # typescript # frontend # react. mui-x/charts error: In my case it was failing because I did not set properly the typescript support for Jest. Follow asked Feb 19, 2022 at 5:35. ES6 code needs to be compiled before it can be run by Jest. 3. Jest encountered an unexpected token This usually means that you are trying to import a Skip to main content. g. You signed in with another tab or window. Marcus, a seasoned developer, brought a rich background in developing both B2B and consumer software for a diverse range of organizations, including hedge funds and web agencies. After ejecting create-react-app your package. js:. And Jest doesn't like it. 3. Jest (typescript): SyntaxError: Unexpected token 'export' (lowdb) 0. Stack Overflow. js . js-react module but is throwing different import/export unexpected token errors during the t Because NODE_PATH doesn't work in Typescript, I believe this is the only way to do absolute imports in create-react-app-typescript. The answer was in my . net. I have a test Jest encountered an unexpected token React. 'some-image. SyntaxError: Unexpected token 'export' I was using jest 27, which works fine now. Here's what you can do. npx nx migrate latest didn't create any migration file (so it said). svg') data-jest-svg-name: Only the name portion of the file (e. The output will have a . This means, that a file is not transformed through TypeScript compiler, e. So for the Jest tests to run, it first needs to be transpiled by Babel. 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 - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. babelrc. I was using Babel with Webpack. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Jest encountered an unexpected token Jest failed to parse a file. when your code or its dependencies use non-standard JavaScript Jest failed to parse a file. Internally, preact provides a "browser" field, but the file is ESM, which jest does not natively support without a babel transform. I removed them and the tests began passing. In ES6, you could export the component as. js'; ^^^^^ 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. js' ^^^^^ SyntaxError: Unexpected token 'export' > 1 | import ReactMarkdown from 'react-markdown'; If your project uses TypeScript, Jest transforms your TypeScript files to JavaScript using the babel-jest I believe your case is pretty much similar to these ones: amcharts4 issue #2133 - github OR Jest encountered an unexpected token. js, and the last one was close but I was still missing one important thing the imports. Two lines defining import plugins specifically for @material-ui. js:1] 0 Cannot use import statement outside a module with date-fns in Jest after updating to Angular 13 Tagged with jest, testing, react, javascript. 6. I tried a Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 5k 6 6 SyntaxError: Unexpected token 'export' Load 7 more related questions Show fewer related questions Sorted by: Reset to This could be a temporary workaround until babel configs are fixed. config. The issue started when updating Jest from 26. I'll look into this more. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring Error Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. I had an issue in which my unit tests were running just fine on my machine but failing on jenkins, your solution caused jest to give me a warning saying that globals are deprecated and then the tests took forever, I removed the globals and ended up with: export default { displayName: 'my-lib', This ended up helping me import @microsoft/mgt-react into a Next Js v12 project. npm install --save-dev @babel/core @babel/preset-env. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". These errors can occur due 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 I'm running yarn test on a project and I get the following error: ({"Object. This error occurs Jest encountered an unexpected token. I worked around this by adding these modules to the transformIgnorePatters in my Jest config, but this doesn't seem like the way to go. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns 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. oys noqsna zqv guex cviytzpv pnfnk lkgsf emlb gzdy lzbqy cuyahog djtoz pkcp zlskb ezk