Syntaxerror unexpected token jest react Currently, I'm migrating a react project Typescript but to do it as fast as possible and avoid more problems I' Jest encountered an unexpected token Jest failed to parse a file. Jest: SyntaxError: Cannot use import statement outside a module in React I'm running yarn test on a project and I get the following error: ({"Object. This can cause conflicts or unexpected behavior, because they might have different settings or transformations. js:1 Uncaught SyntaxError: Unexpected token < main. The main app still uses the . when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. I am just trying to make a simple example to learn. Cause: babel-jest uses babel configuration that is loaded based on the location of the file that is going to be transformed. So to be clear, I've followed the instructions to include 2 lines in my setup file, AND included the transformIgnorePatterns you suggested. Unable to run jest tests in React typescript. react js unexpected token export on export{default as Cards} 0. 1 I'm getting the following error in my react unit tests. I am having his message when importing a file. I'm using jest to test a react TypeScript app. basename(filename)) + ';'} – milmal I've tried quite a few variations on this with no luck. 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. Unexpected token import usually means babel is not converting to commonJs @Elango for the answer in stackoverflow I already had it in package. Jest encountered an unexpected token with react-native. 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 Jest - SyntaxError: Cannot use import statement outside a module Hot Network Questions How to combine 2 ordinal variables and 1 dichotomous variable into a single (preferably continuous) variable? 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 However, when I npm run build and the firebase deploy the app, the app is not running and is throwing the error: Uncaught SyntaxError: Unexpected token '<'. Error: 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 Issue : I am using ts-jest to test my typescript library. Ahmed Sbai. jyurek changed the title Jest encountered an unexpected token Jest encountered an unexpected token: "SyntaxError: Unexpected token {"Mar 14, 2019. The issue started when updating Jest from 26. Load 7 more related questions Show Configuring transformIgnorePatterns: To address unexpected token errors in Jest, the transformIgnorePatterns option plays a crucial role. Maybe Fix the common Uncaught SyntaxError: Unexpected Token < in React with our step-by-step guide. Open HugoLiconV opened this issue Jun 17, 2020 · 8 comments Open SyntaxError: Unexpected token export when running jest #98. js:1] 587 How to test the type of a thrown exception in Jest Update: Now you need to return an object. /ac Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. (jest-)?react-native Having trouble running Jest tests: `SyntaxError: Unexpected token <` 1 Jest tests crashing due to ES6/Es. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". 56. 38. Uncaught SyntaxError: Unexpected token '<' (React) Ask Question Asked 3 years, 1 month ago. Recently, I added the lightbox. What happens if the attack roll is a ts-jest; react-typescript; Share. json: I could finally fix this problem after a long struggle: As Daniel said in the answer above we need to change the . js file specifically for the tests. Tests used to transpile perfectly with babel6. 16. I've been able to test ts files but as soon as I attempt to write a test for tsx files I get the error: const rendered = (0, _reactTestRenderer. +\\. Try upgrading nodejs. Hot Network Questions Entered Japan, I had 31 days left of Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. I continue to investigate – TheSoul. 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. I'm currently trying to evaluate different testing frameworks that work with React, and it turns out that Jest is on my list. Commented Jul 24, 2019 at 10:58. it's not plain JavaScript. 3. js:1 ({"Object. json --watch" I get the following error: Test suite failed to run /home/user/Projects/ This problem occurs on older versions of nodejs, like your v10, but not newer versions, like v18. 10. Steps I took: 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: Unexpected token < 2. testing React Native [React]Jest SyntaxError: Unexpected token import. babelrc as this overrides babel. "jsx": "react-native" Same as the "preserve" option, but the output will have a . How to resolve "Cannot use import statement outside a module" from Jest when running tests? 4. js: When running my test suite using Jest, I encountered warnings that asked me to update packages: npm WARN deprecated jest-dom@2. It's SyntaxError: Unexpected Identifier, and it points to Enzyme on one machine, or import on the other – Makan Azarshahy. Jest encountered an unexpected token. 13. js:1] 587 How to test the type of a thrown exception in Jest I am using Jest to test my react application. Find my firebase. 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 UPDATE who use create-react-app from feb 2018. js:1] 95 Importing images breaks jest test I was using jest to test my react-native application and while testing the only components which use react-native-elements, "SyntaxError: Invalid or unexpected token" while testing component with jest & enzyme #1360. /ac You signed in with another tab or window. make a file with the name of fileTransformer. : Use this when you're using babel-jest to transpile your tsx (or jsx) files. For those who use Vue test util in Nuxt 2 and are faced with question or this problem ({"Object. I am trying to make a React project without Node and I am calling a JS file from a HTML file. This can be also occurs when you are not configure your babel react presets in order to compile your JSX. Jest - Unexpected token import 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; 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. Please uninst Current behavior This is a reopening of #9488 I'm running a simple react-native app with typescript template. svg') data-jest-svg-name: Only the name portion of the file (e. By configuring this option correctly, we can exclude 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 was using jest 27, which works fine now. babelrc and some dependencies, moduleNameMapper and transformIgnorePatterns in Having trouble running Jest tests: `SyntaxError: Unexpected token <` 0. Jest - Unexpected token import. js file:. stringify(path. If using modules: false on root level, you'll need to use modules: true on the test environment. 14. it's not pla Alright, I actually managed to get this working. Any help would be much appreciated. json. I had to mock both the Mapbox-gl and react-native EventEmitter dependencies in addition to adding a ton of babel transforms. create-react-app & jest — SyntaxError: Unexpected token import. Internally, preact provides a "browser" field, but the file is ESM, which jest does not natively support without a babel transform. React Jest tests fails with react-dnd: SyntaxError: Unexpected token 'export' 6. js-react module but is throwing different import/export unexpected token errors during the t Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. createElement: type is invalid -- expected a string) 5. js it works, unfortunately i havent found any docs about this why it does. 'some-image. js files. HugoLiconV opened this issue Jun 17, 2020 · 8 comments Comments. 2. This happens e. Viewed 204 times 0 . 7. 416. Identify and resolve configuration & code issues with ease. <anonymous>":function(module,exports,require,__dirname,__filename,jest){ SyntaxError: Invalid or unexpected token. testing React Native Application with Jest Jest encountered an unexpected token. 1. SyntaxError: Unexpected identifier {import React from 'react'; 23. Copy link Member. (js|jsx|mjs)$": "<rootDir>/node_modules/babel-jest" }, since ts and js files After upgrading from 15. ca81c833. 1 to 16. js:1] 4. SyntaxError: Unexpected identifier jest & babel 7 & react-native 0. Jest says SyntaxError: Unexpected token export - React, Material. Unfortunately i havent found any docs about why it does but here is my answer. Asking for help, clarification, or responding to other answers. I understand tha SyntaxError: Unexpected token u in JSON at position 0 at JSON. Jest doesn't use Webpack so it doesn't know how to load other file extensions than js/jsx. By default, if Jest sees a For anyone using create-react-app, only certain jest configurations can be changed in package. 1 SyntaxError: Invalid or unexpected token when testing react application with babel and jest. Follow edited Mar 6, 2023 at 22:41. The code works fine until I import and call "createStackNavigator()". expo app with testing react-native-testing-library and jest-native "has no exported member 'toHaveProp" 7. Jest encountered an Things change quickly in the js world. Add a comment | [React-Native][Jest]SyntaxError: Unexpected token import. Closed Ashniu123 opened this issue Aug 9, 2018 · 2 comments. I tried different things, like play around with . Jest encountered an unexpected token React. 34. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. js it does the trick. '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. 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. Viewed 5k times 0 . I am running jest test in react native and it fails giving "SyntaxError: Unexpected token import" Here is my trimmer import code: - import React, { Component } from 'react'; import { Container, Jest doesn't transform node_modules by default, transforming all third-party modules would result in significant overhead and unexpected results. Trying to build ReactJS app in prod - Module build failed: SyntaxError: Unexpected token. Modified 1 year, 11 months ago. 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 Visit the blog [React]Jest SyntaxError: Unexpected token import. I have issues with Jest picking up an internal library, Jest would display 'unexpected token' errors wherever I had my imports from this library. babelrc that wasn't getting picked up by jest no matter what I did to it. TypeError: Cannot read property 'create' of undefined SyntaxError: Invalid or unexpected token when testing react application with babel and jest. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your 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 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: Cannot use import statement outside a module Hot Network Questions How to combine 2 ordinal variables and 1 dichotomous variable into a single (preferably continuous) variable? Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. It looks like the . I have a counter component and I want to test that it works. Parsing error: Unexpected keyword 'export' Hot Network Questions How do I delete Grub? Can a PhD in one field lead to a career in another? The Blade Ward cantrip now reduces the value of an attack roll by a 1d4. You cannot override the moduleNameMapper in package. Viewed 4k times Jest test fails SyntaxError, unexpected token Export. json file under jest area since create-react-app still uses these options to override their default options: 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 Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. Provide details and share your research! But avoid . SyntaxError: Unexpected token '<' on shallow render with Enzyme and Jest in React 1 Setting up a new project with typescript, react and jest and I am running into a SyntaxError: 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 Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. However, I'm trying to use static properties outlined here: https://git 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. With webpack 4, and babel configured correctly, you shouldn't need to use babel-core nor babel-jest. I'm attempting to use jest (v19. Uncaught SyntaxError: Unexpected token < 1. 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. ' I am trying to get started building a site in ReactJS. 7ced8661. it's not pla but Jest doesn't like it and throws a SyntaxError: Unexpected token 'export'. 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 Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. - React and Typscript with Jest and React-testing-Library E:\Git\node_modules@mui\x-date-pickers\internals\demo\index. Jest failed to parse a file. json but in jest. js:1] 587 How to test the type of a thrown exception in Jest You signed in with another tab or window. Improve this 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 Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. ES6 code needs to be compiled before it can be run by Jest. I had a large . This did not work, what did solve it in the end was adding the following to our jest. chunk. im using React in Symfony, installed Jest and Enzyme to test the React components, but when trying to run tests with yarn test or even yarn test --no-cache got following error: here is my package Jest & Enzyme - SyntaxError: Unexpected token import. To add support for other extensions you need to write custom transformers. The problem is happening because jest now looks at the "browser" field in package. This usually means that you are trying to import a file which Jest cannot parse, e. 0. babelrc file to babel. I ran into a similar situation where I wanted to test a React component . Reactjs npm test: Jest encountered an unexpected token. 10 React Jest test fails to run with ts-jest - Unexpected token on imported file. SyntaxError: Unexpected token '. Jest SyntaxError: Unexpected token '<' React. 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. js file with jest, but it was failing because the component imported a . Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. 3. create)(); ^ SyntaxError: Unexpected token '<' Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. next Syntax. ReactJS Module build failed: SyntaxError: Unexpected token. They must always return an object". Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. css stylesheet. TypeError: Cannot read property 'map' of undefined ? Jest / React Native. 3 to 27. js:. Hot Network Questions Who said there were more idols/gods than people in the ancient world? Jest is throwing SyntaxError: Unexpected token 'export' while using azure-devops-ui\Page component I have used ts-jest for transformation D:\Enablement\steam-azdo-testconfig-utility\src\node_m SyntaxError: Unexpected token '<' in React Native when running tests. Reference error: `import` a file after the Jest environment has been torn down. Viewed 630 times 1 . jsx extension. Jest-Expo crashes on example (React. Jest encountered an unexpected token when working with React TypeScript. Module not found: Can't resolve 'react-dom' The problem is with the naming convention that you have used for react components. I partially followed the docs jest webpack to make it work. <anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export As React applications grow more complex, the patterns that were “just fine” when you were starting out might start to feel limiting. js. For the react components, you have to use pascal case. Jest encountered an unexpected token - React with jest and enzyme. 6. (react uncaught syntaxerror: unexpected token <) Having trouble running Jest tests: `SyntaxError: Unexpected token <` 0. create-react-app & SyntaxError: Unexpected token 'export' > 2 | import { Swiper, SwiperSlide } from 'swiper/react'; Jest encountered an unexpected token React. Reload to refresh your session. I'll look into this more. x of jest so I think since I'm just now upgrading from 27. Jest gives an error: "SyntaxError: Unexpected token export" 64. Viewed 856 times ReferenceError: element is not defined . 2k 11 11 gold "SyntaxError: Unexpected token < in JSON at position 0" 253 Uncaught SyntaxError: Unexpected token : 807 I am using Jest to test my react application. js:1 Jest encountered an unexpected token because trying to import a file which Jest cannot parse 6 SyntaxError: Cannot use import statement outside a module React JS Antd [React]Jest SyntaxError: Unexpected token import. brentvatne commented Mar 15, 2019. 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. exports = ' + JSON. Why does it work for some imports and doesn't work for others? SyntaxError: Invalid or unexpected token 26 | PRIVATE_USER_PAGE 27 | } from '. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. js:1] 587 How to test the type of a thrown exception in 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 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 @krizzu, no help, at least, with the "Jest setup file" option. 6. You switched accounts on another tab or window. The Jest doc about Testing React Native Apps includes a section about compiling dependencies that don't ship pre-compiled code. Importing images Issue : I am using ts-jest to test my typescript library. However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token &lt;". 1. 2) w/ my react native (v0. Worked perfectly returning {code: 'module. This error occurs because Jest does not Jest encountered an unexpected token. This time I'm going to talk about a specific error: SyntaxError: Unexpected token 'export' . . 0. 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 when running jest #98. Also found out the moduleNameMapper cannot be overriden in package. The output will have a . Jest encountered an unexpected token Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. When I run 'yarn test' for my react app, I get the dreaded error: Jest encountered an unexpected token. SyntaxError: Unexpected token 'export' Jest encountered an unexpected token Jest failed to parse a file. Modified 3 months ago. because it is a JS file with TS syntax, or it is published to npm as uncompiled source files. Situation: I want to render a React Native app that has a Mapbox map in it inside my Jest tests, so I can test the logic we wrote around it. You can see my commit at the bottom. 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. parse (<anonymous>) Jest encountered an unexpected token - React with jest and enzyme. ts file and the quotes kept getting stripped off "uuid" and the fix didn’t work. Hot Network Questions It may work who use create-react-app from feb 2018. I was using Babel with Webpack. Facing this issue while I am trying to run test for ios in react native with jest as test runner. Similar question and answer: Azure pipeline npm build failing for React: Unexpected token (This question is dealing with Azure Pipelines, but the root problem is the same and proposed solution applies. 252. Your components should be corrected as follows. But now I get this error: SyntaxError: Unexpected token < (on the line for render(<AppTitle />). I can't get my tests to run. I tried a 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 was using a 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 I wrote a React application and used jest to write unit tests. I finally found a workaround for this. I got react-dnd working on runtime thanks to the webpack resolver fix explained in #3433, but that of course Jest encountered an unexpected token. tsx file has not been transpiled. js:1] 95. json when using create-react-app. It also compiles perfectly with webpack with Babel7 but fails to run tests with je im using React in Symfony, installed Jest and Enzyme to test the React components, but when trying to run tests with yarn test or even yarn test --no-cache got following error: here is my package Jest & Enzyme - SyntaxError: Unexpected token import. You signed out in another tab or window. /ac I am having issues in running jest tests in my project with Babel7. config. It lite 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. You have a few problems with your jest. 4 Unexpected token, expected ";" on import JSON in NodeJS jest testing. 18. Jest encountered an unexpected token Jest failed to parse a file. There are only 2 tests, one of them renders the . As per the accepted answer @sdgluck, I had to add a babel. I am unit testing a React/Typescript component with Jest and React Testing Library and running into this error: SyntaxError: Unexpected token u in JSON at position 0 at JSON. This is the test I'm running: import { render, screen } from '@testing-library/react' import { toBeInTheDocument } from '@testing-library/jest-dom' i 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). g. I believe your case is pretty much similar to these ones: amcharts4 issue #2133 - github OR Jest encountered an unexpected token. By making it "^uuid$" this started working for me. 1: jest-dom has moved to @testing-library/jest-dom. [React]Jest SyntaxError: Unexpected token import. SyntaxError: Invalid or unexpected token when testing react application with babel and jest. Just use presets env, react, stage-0 to babelrc. json for jsdom. React Jest tests fails with react-dnd: SyntaxError: Unexpected token 'export' Ask Question Asked 2 years, 8 months ago. Unexpected token, expected ";" jest + data-jest-file-name: The name of the file (e. When running Jest tests with tsx (or jsx) React components, you might encounter the "SyntaxError: Unexpected token ''" error like the following: Jest encountered an 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 This works, but I have to install babel-jest, babel-preset-env, babel-preset-react, and then "transform": { "^. [React-Native][Jest]SyntaxError: Unexpected token import. x I'll stick with this solution for now. parse. it 's not plain JavaScript. I see the problem in jest 28 and above. Reactjs npm Fix "Jest encountered an unexpected token" with "create-react-app" one is of course also using the same option transformIgnorePatterns but we just simply put in the package. js:1] 5 TypeScript Property 'navigation' is missing in type but required in type 'Props' React Native I am using Jest to test my react application. Commented Aug 15, 2018 at 23:54. js in the test/unit directory, and then add these codes: Trying to set up Jest to test my React components (Technically I'm using Preact) but same idea Anytime I try to get a coverage report, I get errors when it hits any jsx syntax. It lite Jest SyntaxError: Unexpected token 'export' in TypeScript project. Some react-native libraries ship uncompiled ES6 code. Here is my jest. ) Current behavior This is a reopening of #9488 I'm running a simple react-native app with typescript template. io. when I run it by "jest --config=jest. By default, if Jest sees a Babel config, 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. Ask Question Asked 1 year, 11 months ago. 11. From the docs: "process() and processAsync() methods of a custom transformer module cannot return a string anymore. you React Native/Expo yet another SyntaxError: Unexpected token import while testing. Ask Question Asked 1 year ago. After ejecting create-react-app your package. You are mixing two presets: jest-expo for Expo apps and ts-jest for TypeScript apps. I'm encountering an issue while running Jest in my TypeScript project. We collect PII about people browsing our website, users of the Sentry service, prospective customers, and people who otherwise interact with us. 👍 128 istarkov, builtbyproxy, GeorgianSorinMaxim, nickovchinnikov, hoaiduyit, AlexanderSoliar, yvele, bwhitty, felipepalazzo, cch5ng, and 118 more reacted with david-wb changed the title Jest SyntaxError: Unexpected token 'export' site:stackoverflow. 12. 0) project however when I run the jest command I'm receiving the following error: Test suite failed to run /Users/kyledecot/ This is a very simple alteration of the jest tutorial example for react DOM unit testing. Having trouble running Jest tests: `SyntaxError: Unexpected token <` 3. 10 React ReactJS - Module build failed: SyntaxError: Unexpected token react components not rendering. Modified 1 year ago. js: I realize this question has been asked multiple times but nothing has worked for me I'm trying to create a static build of a create-react-app project but I'm getting the following errors:. Modified 3 years, 1 month ago. 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 means that a file is not transformed through TypeScript compiler, e. js extension. I'm trying to run a test for a personal website done in create-react-app. js file Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. ":function(module, Jest - SyntaxError: React Navigation - Unexpected token export for [node_modules\react-navigation\src\react-navigation. acact oiie ambng fmjjdi etqr gafc rco efaot jwxwq altwy wtrq xormc qjk aguchdg gyt