Jest encountered an unexpected token export react native json java In this particular setup, I appear to have needed the file to be babel. Issue with jest "Unexpected token 'export'" Ask Question Asked 2 years, 4 months ago. As React applications grow more complex, the patterns that were “just fine” when you were starting out might start to feel limiting. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. 2) w/ my react native (v0. babelrc to babel. 7 となる。 Jest公式によると、react-nativeに組み込まれたJestプリセットにはデフォルトのモックが付属しているものの、いくつかのコンポーネントにはそれが無く、ネイティブコードに依存しているためマニュアルでモック化する必要があるとかなんとか. /common/model/MyModel'; Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. I can't get my tests to run. js and make sure you use module. In the case of firebase , it The workaround I've found is to 'whitelist' node_modules in package. js:1] 5 TypeScript Property 'navigation' is missing in type but required in type 'Props' React Native Here is the setUp file that it's referring to: setUptests. FC Enabled experimental React Native Directory checks. I am getting Unexpected token on the React Component Name while running npm test. jsx extension. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax 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. ES6 code needs to be compiled before it can be run by Jest. js modules/ user/ index. Jest failed to parse a file. You will need to tell Jest to compile react-navigation-tabs by whitelisting it in the transformIgnorePatterns option in For those that travelled this far. However, your answer fixed this for me. 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 JavaScript, circular imports when mocking Jest doesn't use Webpack so it doesn't know how to load other file extensions than js/jsx. 0. json (abridged) Listen to the Syntax Podcast. it ' s not Add the package @sentry/react-native to your package. 56 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. 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). Unexpected token 'export' 8 | import DeleteIcon from '@mui/icons-material/Delete'; 9 | import { useNavigate } from 'react-router-dom' > 10 | import dateFormat, { masks } from "dateformat"; | ^ 11 | 12 | export const TaskComponent: React. 1 $ npm -v 6. Asking for help, clarification, or responding to other answers. json Skip to main content. ts file in all my apps to match your snippet, and it worked. 15. Modified 2 years, rollback to 2. tsx to a relative import: import { MyModel, Type } from '. To add support for other extensions you need to write custom transformers. The output will I'm trying to run a test for a personal website done in create-react-app. js extension. 22. It seems that because of the new ESM format of this module, jest really has trouble with. I'm currently using some of the libraries such as Secure-store, Jest setup "SyntaxError: Unexpected token export" Related questions. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. json, Test/* test*js, *sh. 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. ts Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. because it is a JS file with TS syntax, or it is published to npm as uncompiled source files. Viewed 20k times 8 . Unset the EXPO_DOCTOR_ENABLE_DIRECTORY_CHECK environment variable to disable this check. : Use this when you're using babel-jest to transpile your tsx (or jsx) files. it's not plain JavaScript. Provide details and share your research! But avoid . FAIL ***. g. json into this { "name": Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Thank you 🙂. App. exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins 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. I have issues with Jest picking up an internal library, Jest would display 'unexpected token' errors wherever I had my imports from this library. npm install --save-dev @babel/core @babel/preset-env. 0. 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. Tried few solutions, Which are posted on StackOverFlow but none worked for me. So I have these file and folder. – Sadra Abedinzadeh. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. There is a new concept of root config which should be located in the root of your project and the file must be named babel. david-wb changed the title Jest SyntaxError: Unexpected token 'export' site:stackoverflow. Unexpected token 'export' There seems to be an issue with configuration that prevents React Native Testing Library from working correctly. With these settings, I can now run npm test and it properly runs my tests - including those that require an import of @toolz/is-a-regular-object. 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. Unexpected token 'export' There seems to be an issue with your configuration Configure Jest to use Babel: If you are using ES6 module syntax or any other non-standard JavaScript syntax that Jest does not support, you can configure Jest to use Babel to transpile your code module. json for common issues Check Expo config for common issues Check native tooling versions Check if the project meets version requirements for submission to app stores Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 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 testing React Native Application with Jest - Jest encountered an unexpected token 12 SyntaxError: Unexpected identifier jest & babel 7 & react-native 0. Modified 7 years, I have freshly generated React-Native project and yarn test is failing. 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 Jest test failing unexpected export react native. @Elango for the answer in stackoverflow I already had it in package. js. Maybe @Abhishek is right on, worked for me, thank you! :) I had to create a jest. json in jest export const captureException = jest. yarn run v1. FAIL src/Tests/AddMember. So, this is my whole package. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your I can't modify package. babelrc in your project's root directory and add this code there. This means that a file is not transformed through TypeScript compiler, e. Recently, I added the lightbox. json. "jsx": "react-native" Same as the "preserve" option, but the output will have a . { "presets": ["@babel/preset The only way I could get this to work for myself was to add: { "targets": { "node": "current" } } So that my presets read: I believe your case is pretty much similar to these ones: amcharts4 issue #2133 - github OR Jest encountered an unexpected token. I have added content of babelrc , package. js-react module but is throwing different import/export unexpected token errors during the t You signed in with another tab or window. json when using create-react-app. react export Unexpected token. jest-expo preset is present in package. The output will have a . 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. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not Unexpected token 'export' 1 | import React, { useMemo } from 'react'; > 2 | import { MapContainer, GeoJSON, TileLayer } from 'react-leaflet Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. import { configure } from 'enzyme'; // eslint-disable-line import/no-extraneous-dependencies import Some react-native libraries ship uncompiled ES6 code. What you did: Running Jest tests for a React Native project with the configuration and code provided above. The first method works if for some reason you have to import a css file from node_modules directly. fn(); This is happening because Babel 7 no longer loads your . I. Reload to refresh your session. My file also included some code to map the @ character to the root src directory, since I had webpack and this was 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 Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. exports = {}; run jest Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. I updated my jest. You switched accounts on another tab or window. json and my test file content below Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. ' Jest encountered an unexpected token when testing react-native with jest 3 Unexpected token, expected ";" jest + enzyme in react native Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins 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 I too encountered this when using react-markdown v9. 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 Visit the blog Jest encountered an unexpected token Jest failed to parse a file. You signed out in another tab or window. e What you did: Running Jest tests for a React Native project with the configuration and code provided above. Get tips and tricks from Wes Bos and Scott Tolinski. , in a normal . I had the latest version of nx, i. So to give you some steps to follow: rename your . Tried reading several other similar questions but none seems to be working for me. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". I refuse to write my packages with old-skool require() and module. Jest encountered an unexpected token This usually means that you are trying to import a file which 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. 38. Solution #2 - A React Project (with create-react-app) package. 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. When I run 'yarn test' for my react app, I get the dreaded error: Jest encountered an unexpected token. js In list. Share. None of the I created an NPM package that uses modern JavaScript. Tasty treats for web developers brought to you by Sentry. 0) project however when I run the jest command I'm receiving the following error: Test suite failed to run /Users/kyledecot/ Jest encountered an unexpected token. I'm switching a SDK from Expo managed workflow to Expo bare workflow to reduce some of the unnecessary libraries included in Expo. SyntaxError: Unexpected token '. js Test suite failed to run. 9 will resolve it but it makes conflict due to I upgraded to React 18. With Konva and react-konva installed and imported, my jest@enzyme tests failed to run with this error: Test suite failed to run Jest encountered an unexpected token This usually means that you are Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. This is the test I’m running: Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 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' I’m using jest to test a react typescript app. export function flatten (target, opts) { ^^^^^ SyntaxError: Unexpected token 'export' I made sure my jest was properly installed and set up, as per Next. I had this same issue! I'm not sure if it's the same case as in the original question, but for me jest was still somehow trying to load the images as JS and trying to parse them while I had the files matching image extensions mapped to a mock in moduleNameMapper. config. npx nx migrate latest didn't create any migration file (so it said). Stack Overflow. The Jest doc about Testing React Native Apps includes a section about compiling dependencies that don't ship pre-compiled code. js for create-react-app without ejecting it, thought might help someone, here is a script to dump it to screen, then follow instructions above: Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your module. babelrc automatically. e. To do this, try configuring @babel/preset-react with runtime: "automatic" (and installing @babel/preset-react if needed). . js list. I have created react app with parcel, (New to testing) While doing unit testing for my ContactUs page, I have came across this problem. babelrc file, you want something like this: Jest encountered an unexpected token Jest failed to parse a file. 正直Jestのモックとはそもそも何ぞや？ Jest encountered an unexpected token Jest failed to parse a file. Jest encountered an unexpected token when testing react-native with jest. This happens e. Modified 2 years, 1 month ago. 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). Jest encountered an unexpected token React. com Jest SyntaxError: Unexpected token 'export' Apr 22, 2022 Copy link tyler-dane commented Apr 22, 2022 Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Try npm test and note that tests fail with SyntaxError: Unexpected token export; Note that you can get jest to run and the tests to pass by: changing the absolute import on line 5 of App. About; Products OverflowAI; Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. tsx 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. js docs, but still same issue. 4 $ jest App. Its using below node & npm version, in web ide (execution part) $ node -v v8. 4. js I have export For anyone using create-react-app, only certain jest configurations can be changed in package. Check package. Jest encountered an unexpected token Jest failed to parse a file. 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 . 7 Jest + Firebase: TypeError: Cannot read property 'defineProperties' of undefined Jest encountered an unexpected token with react-native. Jest encountered an unexpected token - SyntaxError: Unexpected token 'export' Jest encountered an Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Improve this answer. json jest config like this: "jest": { "transformIgnorePatterns": [ "!node_modules/" ] } Unexpected token 'export' on 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 JavaScript, circular imports when mocking 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). Ask Question Asked 7 years, 3 months ago. 1. 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. Unexpected token export with jest. SEE EPISODES Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 1 $ node -v v8. 9. Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. My case was module federation shared dependencies caused a legacy package's css not to get picked up. Follow answered Oct 3, 2022 at 7:00. I am struck here, Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Jest encountered an unexpected token. 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). js-react module but is throwing different import/export unexpected token Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. js and export an object. tsx FAIL __tests__/App. I'm attempting to use jest (v19. test. Ask Question Asked 7 years, 7 months ago. json file. jftzsmjs kvmvl nwe mhzg uucjymm vzehepm bxbm mbcnf hat ylye nzs lrisr dtx lres lpqut