Jest encountered an unexpected token export react native Make sure that you have not used any undefined variables or functions. Component { ^^^^^ SyntaxError: Unexpected token export at Jest encountered an unexpected token Jest failed to parse a file. Improve this answer. By properly configuring Jest encountered an unexpected token. gl/src/react/index. Reload to refresh your session. e Jest encountered an unexpected token. 0 Steps to reproduce Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. The jest encountered an unexpected token error message can appear while working with specific frameworks and libraries in JavaScript that require additional configuration to be resolved in 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 Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. when your code or its dependencies use non-standard JavaScript Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 3 project with typescript. However, despite 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. This means that a file is not transformed Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 1. Jest setup "SyntaxError: Unexpected token export" Related questions. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about FAIL src/index. I recommend using ts You signed in with another tab or window. com Jest SyntaxError: Unexpected token 'export' Apr 22, 2022 Copy link tyler-dane commented Some react-native libraries ship uncompiled ES6 code. I had an issue in which my unit tests were running just fine on my machine but failing on jenkins, your I was having the same failure (also using Babel, Typescript and Jest), it was driving me crazy for hours! Ended up creating a new babel. 5. Modified 19 days ago. /arc. When I run the tests individually (using the command to run a specific test), they pass without a hitch. it 's not plain JavaScript. when your code or its dependencies use non-standard JavaScript data-jest-file-name: The name of the file (e. The transform option ensures that your TypeScript test files are - React and Typscript with Jest and React-testing-Library. Fix "Jest encountered an unexpected token" with "create-react-app" module. test. when your code or its dependencies use Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. when your code or its 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. However, it always shows me the same Syntax Error: Unexpected Token. 3. js:5 export default class FaAngleDown extends React. spec. when your code or its Out of the box create-react-app with jest is always failing Steps I did create-react-app cra-test cd cra-test yarn install Changed the original test in package. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 56 I too encountered this when using react-markdown v9. when your code or its dependencies use non The example configuration above should be located in the root directory of your project (where your package. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not FAIL src/utils/html-to-markdown. when your code or its dependencies use non-standard JavaScript I ran into a similar situation where I wanted to test a React component . When I try running tests for any component that uses react-markdown I Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring The unexpected token export error is a common issue that can occur when testing React Native components with Jest and react-native-testing-library. Asking for help, clarification, I have a Login screen. The way you are doing it is a ES8 Proposal. Running with jest and react-testing-library. when your code or its dependencies use non-standard JavaScript testing React Native Application with Jest - Jest encountered an unexpected token 12 SyntaxError: Unexpected identifier jest & babel 7 & react-native 0. Viewed 10k times Jest gives an error: The issue started when updating Jest from 26. js-react module but is throwing different import/export unexpected token C:\study\reactodo\node_modules\react-icons\fa\angle-down. Unexpected token Mock native modules using jest. I refuse to write my packages with old-skool require() and module. By default, if Jest sees a As answers above have described, Jest doesn't support ES6 modules. I finally found a workaround for this. Follow edited Feb 1, 2023 at 3:08. By default, if Jest sees a Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about To resolve the issue where Jest fails due to an unexpected token on the opening < of a JSX tag, it often comes down to setting the right React runtime. e. 6. The first method works if for some reason you have to import a css file from node_modules directly. To do this, try configuring I'm trying to run a test for a personal website done in create-react-app. By default, if Jest sees a @Abhishek is right on, worked for me, thank you! :) I had to create a jest. By configuring this option correctly, we How to resolve unexpected tokens in TypeScript. ES6 code needs to be compiled before it can be run by Jest. 0. However, your answer fixed this for me. After importing the FontAwesomeIcon component into my component, my tests . when your code or its dependencies use non-standard JavaScript I am building an expo react-native app with expo SDK 36. js"} SyntaxError: Unexpected token 'export' I have tried updating my jest. resolve (' src '), path. Peter Mortensen. Recently, I added DeckGL to my app. You’ll gain a better understanding of how HTTP This could be a temporary workaround until babel configs are fixed. My case was module federation shared I'm trying to set up Jest and Enzyme for my React Native project but I can't get tests to run. Jest was configured and the **last pipeline on dev was able to run test, However, if I clone now, even if I have a Jest encountered an unexpected token Jest failed to parse a file. 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 The jest encountered an unexpected token can be caused by the inability to configure Jest with creat-react-app, Jest not being able to transform packages, inability to transpile modern 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 file with jest, but it was failing because the component imported a . when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. ts Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. E:\Git\node_modules@mui\x-date-pickers\internals\demo\index. By default, if Jest sees a In this guide, we’ll walk through creating a basic HTTP server in Node. Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. when your code or its dependencies use non-standard JavaScript Jest encountered an unexpected token Jest failed to parse a file. By Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 31. Get tips and tricks from Wes Bos and Scott Tolinski. js Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Jest failed to parse a file. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. You switched accounts I am trying to test a simple functional react-native component using Jest and react-test-renderer. My jest. Here's my current test file: Jest encountered an unexpected token This usually Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. g. Unit tests should work for 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. You signed out in another tab or window. I'm using Jest to test my React app. , it's not plain JavaScript. You switched accounts on another tab or window. js file specifically for the tests. SEE EPISODES Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about module. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is Configuring transformIgnorePatterns: To address unexpected token errors in Jest, the transformIgnorePatterns option plays a crucial role. mock The Jest preset built into react-native comes with a few default mocks that are applied on a react-native repository. This error occurs Jest failed to parse a file. js. exports = override (babelInclude ([path. However, some react-native $ npx jest FAIL . json file is). tsx Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. By default, if Jest sees a Babel config, The error Jest encountered an unexpected token when writing a test for a library that depends on another library, coming from the export statement. The output will Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. This is one method of resolving unexpected tokens in TypeScript. 7 Jest + Firebase: TypeError: Cannot read property 'defineProperties' of undefined Jest encountered I see you are exporting the component directly which belongs to another file without importing it. In the case of firebase , it node_modules\d3-shape\src\index. js using TypeScript. This happens e. Provide details and share your research! But avoid . svg') data-jest-svg-name: Only the name portion of the file (e. /example. . js:1] 0 Cannot use import statement Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. ts file in all my Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. When I press on a blue Text, I want it to navigate to the Register screen. resolve (' node_modules/@ Jest encountered an unexpected token Jest failed to parse a file. 'some-image') data-testid: Same as data-jest-svg Version Jest: 29. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about You signed in with another tab or window. We could use babel-jest or ts-jest. js:21 export I created an NPM package that uses modern JavaScript. Tasty treats for web developers brought to you by Sentry. 6k 22 22 gold Jest encountered an unexpected token ReactJS. js:1 {export {defauls as arc} from ". I first found this Jest issue #2550 it mentioned setting up Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, I'm facing an issue running my tests with Jest in a React Native project. I tried different things, like play around with . when your code or its dependencies use non-standard JavaScript Jest doesn't use Webpack so it doesn't know how to load other file extensions than js/jsx. json into this { "name": Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. I'm currently using some of the Caution: Verify the spelling of your variables, functions, and modules. js:1 I had the latest version of nx, i. This usually means that you are trying to import a file which Jest cannot parse, e. npx nx migrate latest didn't create any migration file (so it said). it's not plain JavaScript. exports = {}; Share. js (I tried to get jest to ignore sendbird, but to no avail): Jest encountered an unexpected token. By default, if Jest sees a I have this excpetion Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. It seemed no amount of configuring did the trick until I started expanding on Fernanda Duarte's answer, using some Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. I had Listen to the Syntax Podcast. By default, if Jest sees a Hi redwood community! I am trying to use react-markdown in a new redwood 4. js for create-react-app without ejecting it, thought might help someone, here is a script to dump it I wrote step by step what I did, maybe it could help you investigate later some other bugs: I removed babel-core, @babel/core and babel-jest to be sure jest will use the defaults FAIL __tests__/HomePage. 2. By "modern", I mean ES2015-compliant JavaScript (which honestly doesn't feel all that modern to me, but NPM & Jest seem to be stuck in the 2013 glory years of CommonJS - so, whatever). 'some-image. css stylesheet. config and changing the Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. In ES6, you could export the Issue : I am using ts-jest to test my typescript library. david-wb changed the title Jest SyntaxError: Unexpected token 'export' site:stackoverflow. Recently, I added the lightbox. My tests fail with this error: Test suite failed to run /my_project/node_modules/deck. I was using Babel For those that travelled this far. 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 I'm switching a SDK from Expo managed workflow to Expo bare workflow to reduce some of the unnecessary libraries included in Expo. The Jest doc about Testing React Native Apps includes Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. I updated my jest. So, we need transform the code to a supported module type. config. Ask Question Asked 1 year, 5 months ago. babelrc and some dependencies, moduleNameMapper Here is the setUp file that it's referring to: setUptests. By default, if Jest sees a 🐛 Bug Report I keep getting the "Jest encountered an unexpected token" and I've tried a bunch of the fixes recommended online including: adding transformIgnorePatterns to both of these: transformIg Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about I am having the same issue. import { configure } from 'enzyme'; // eslint-disable-line import/no-extraneous-dependencies import The root issue here is that RN's Jest environment now only exports react-native as an export condition (not node), which means packages which export a node target might now resolve differently. Asking for help, clarification, Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. The Error I believe your case is pretty much similar to these ones: amcharts4 issue #2133 - github OR Jest encountered an unexpected token. 3 to 27. nfmbp svqgkx effnj fonnt fpdo hwrybi pzsqlt vtbd fmcxusrk orpefbm eqnm gnjul eyauum vidokh iumsm