Jest encountered an unexpected token export react native json object. I have a Login screen.

Jest encountered an unexpected token export react native json object 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. 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. js:284:10) at Object. Step 1: installation: npm i -D ts-jest @types/jest or yarn add --dev ts-jest @types/jest. exports = {}; run jest node_modules\d3-shape\src\index. js"} SyntaxError: Unexpected token 'export' I have tried updating my jest. , in a normal . 22. js file specifically for the tests. I. 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 Visit the blog So, this is my whole package. Jest encountered an unexpected token This usually means that you are trying to import a file which Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. config and changing the transformIgnorePatterns but not having any success Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 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. Check package. Tried reading several other similar questions but none seems to be working for me. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. /arc. Stack Overflow. Here's what you can do: Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 0. 🐛 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 Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. js:5 export default class FaAngleDown extends React. 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. because it is a JS file with TS syntax, or it is published to npm as uncompiled source files. As React applications grow more complex, the patterns that were “just fine” when you were starting out might start to feel limiting. Component { ^^^^^ SyntaxError: Unexpected token export at transformAndBuildScript (node_modules\jest-runtime\build\transform. When I am tr Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 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). > JSON. 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 What you did: Running Jest tests for a React Native project with the configuration and code provided above. 4. it 's not plain JavaScript. babelrc as this overrides babel. npx nx migrate latest didn't create any migration file (so it said). when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. My case was module federation shared dependencies caused a legacy package's css not to get picked up. , it's not plain JavaScript. However, despite following dozens of how-tos and tutorials, I am not able to fix the issue below. . 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. My tests fail with this error: Test suite failed to run /my_project/node_modules/deck. 1 $ node -v v8. 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. js:2:44) at I'm trying to run a test for a personal website done in create-react-app. 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 Visit the blog This is happening because Babel 7 no longer loads your . The main app still uses the . Here's my current test file: Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. 6. tsx Test suite failed to run Jest encountered an unexpected token This usually means that you are trying Status, } from "@sentry/types"; ^^^^^ SyntaxError: Unexpected token ' export ' > 1 | import * as Add the package @sentry/react-native to your package. The issue started when updating Jest from 26. I finally found a workaround for this. babelrc file, you want something like this: 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 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. You likely forgot to export your component In this particular setup, I appear to have needed the file to be babel. – Tarun. I am using the our own library for API calls. I had the latest version of nx, i. 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. Jest encountered an unexpected token. You signed out in another tab or window. This means that a file is not transformed through TypeScript compiler, e. It seems that because of the new ESM format of this module, jest really has trouble with. You signed in with another tab or window. I'm using Jest to test my React app. I recommend using ts-jest for simplicity. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. json and my test file content below Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. js and make sure you use module. All the cases, and their Jest encountered an unexpected token. js files. Jest encountered an unexpected token Jest failed to parse a file. Here is the setUp file that it's referring to: setUptests. You switched accounts on another tab or window. com Jest SyntaxError: Unexpected token 'export' Apr 22, 2022 Copy link tyler-dane commented Apr 22, 2022 yarn run v1. This did not work, what did solve it in the end was adding the following to our jest. Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. <anonymous> (src\components\category\category. 1 $ npm -v 6. babelrc that wasn't getting picked up by jest no matter what I did to it. gl/src/react/index. Now I want to test multiple components together, and I immedia Jest encountered an unexpected token Jest failed to parse a file. The only way I could get this to work for myself was to add: { "targets": { "node": "current" } } So that my presets read: You signed in with another tab or window. I have added content of babelrc , package. FAIL __tests__/HomePage. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns and adding "allowJs": true to our tsconfig. If a component is single, and not importing anything else, &quot;npm test&quot; runs smoothly. I have issues with Jest picking up an internal The jest encountered an unexpected token error can occur because of the inability to configure jest with create-react-app, jest cannot transcode specific packages or transpile modern JavaScript code. I've just started to use Jest however Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. <anonymous>":function(module,exports,require,__dirname,__filename,global,jest){export . <anonymous>":function(module,exports,require,__dirname After I added new package aws-rum-web and re-ran the tests, I received the following errors: Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. component. I have a test on a Vite &amp; TypeScript project which fails to run. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. App side it is working fine. 3. When trying to upgrade d3-interpolate 2. Recently, I added DeckGL to my app. This happens e. 3 to 27. 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. tsx Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 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). FC In case you have multiple imports in the file and you want to export all in one object, use export {UserList, otherComponent}? With this, you don't have to use the default. Otherwise localStorage. To add support for other extensions you need to write custom transformers. 1. I updated my jest. type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object. So to give you some steps to follow: rename your . Current Behavior I want to independently publish @example/a and @example/b. david-wb changed the title Jest SyntaxError: Unexpected token 'export' site:stackoverflow. This usually means that you are trying to import a file which Jest cannot parse, e. For those that travelled this far. I have a Login screen. The first method works if for some reason you have to import a css file from node_modules directly. ' 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've setup a project using React, Typescript, Babel, Webpack, with Prettier & EsLint. FAIL src/Tests/AddMember. When I press on a blue Text, I want it to navigate to the Register screen. import React, { Component } Introduction: Jest, a powerful testing framework for JavaScript and TypeScript projects, occasionally encounters unexpected token errors while parsing files. – Sadra Abedinzadeh Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. nx/pa Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. json. As answers above have described, Jest doesn't support ES6 modules. When running jest on @example/b it fails to run due to ESM syntax. @Abhishek is right on, worked for me, thank you! :) I had to create a jest. Unfortunately it looks like the various out of the box transformers are no longer maintained for modern Jest versions. I can't get my tests to run. However, your answer fixed this for me. I set the project up from scratch and had everything working nicely. Asking for help, clarification, or responding to other answers. I'm running yarn test on a project and I get the following error: ({"Object. g. <anonymous>":function(module,exports,require,__dirname,__filename,jest){export { Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. babelrc automatically. So, we need transform the code to a supported module type. When I run 'yarn test' for my react app, I get the dreaded error: Jest encountered an unexpected token. js Test suite failed to run. 1, my Jest tests fail with: 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. 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. Provide details and share your research! But avoid . json in jest Jest doesn't use Webpack so it doesn't know how to load other file extensions than js/jsx. js:1 {export {defauls as arc} from ". it's not C:\study\reactodo\node_modules\react-icons\fa\angle-down. 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 Jest encountered an unexpected token. json, I have the failing test: FAIL src/tests/index. it's not pla Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. In devDependencies, I specified that library. tsx FAIL __tests__/App. js: Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. json, Test/* test*js, *sh. To do this, try configuring @babel/preset-react with runtime: "automatic" (and installing @babel/preset-react if needed). About; Products OverflowAI; Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Reload to refresh your session. We could use babel-jest or ts-jest. Thank you 🙂. Solution #2 - A React Project (with create-react-app) package. By default, if Jest sees a Babel config, it will use that to transform SyntaxError: Unexpected token 'export' The issue started when updating Jest from 26. SyntaxError: Unexpected token '. Recently, I added the lightbox. Maybe Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 4 $ jest App. I adapted one of them and simplified the code some. json into this { "name": I am getting Unexpected token on the React Component Name while running npm test. js. If I run npm install, I'll get the library under node_modules. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". json as proposed by wogsland 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 encountered an unexpected token Jest failed to parse a file. 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. import { configure } from 'enzyme'; // eslint-disable-line import/no-extraneous-dependencies import Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Step 2: Configuration I too encountered this when using react-markdown v9. 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: 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 am building an expo react-native app with expo SDK 36. 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. I believe your case is pretty much similar to these ones: amcharts4 issue #2133 - github OR Jest encountered an unexpected token. js:21 export {d I created an NPM package that uses modern JavaScript. getItem('JSONResponse') returns an object. I'm trying to set up Jest and Enzyme for my React Native project but I can't get tests to run. babelrc to babel. ts file in all my apps to match your snippet, and it worked. @example/b will have a dependency on @example/a. json (abridged) I am now using React Jest to test code. js-react module but is throwing different import/export unexpected token errors during the t 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 Given that your transformIgnorePatterns worked before introducing the lib, the trick is simply to add "react-native-iphone-x-helper" to the "transformIgnorePatterns" attribute. json when using create-react-app. When calling JSON. I refuse to write my packages with old-skool require() and module. json Skip to main content. I had a large . Unexpected token 'export' There seems to be an issue with configuration that prevents React Native Testing Library from working correctly. 15. I have been working on this issue trying to solve it with several configurations, however, I haven't been able to solve it. Jest failed to parse a file. config. e. Unable to use amCharts in tests: export { System, system } from Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. it's not plain JavaScript. {"Object. By default, if Jest sees a Babel config, Jest encountered an unexpected token. I first found this Jest issue #2550 it mentioned setting up transformIgnorePatterns For anyone using create-react-app, only certain jest configurations can be changed in package. parse on an object, the object will be converted to the string "[object Object]" first which clearly isn't value JSON. However, it always shows me the same Syntax Error: Unexpected Token. 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. 1. Its using below node & npm version, in web ide (execution part) $ node -v v8. Unset the EXPO_DOCTOR_ENABLE_DIRECTORY_CHECK environment variable to disable this check. parse({}) Uncaught SyntaxError: Unexpected token o in JSON at position 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. Commented Feb 6 React Unexpected token 'export' when implementing serviceworker. e 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. I can't modify package. js and export an object. Jest was configured and the **last pipeline on dev was able to run test, However, if I clone now, even if I have a package-lock. These errors can occur due to Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 1 -> 3. ts-j JSONData should be a string containing JSON, not an object. Enabled experimental React Native Directory checks. Unexpected token 'export' If you use d3 in a project handled by Create React App, you have to use Jest config in package. yqewtyes btjp rmub rhay myzrsgp hifr inva wgsy dtghxqk zbab oetssj mub cnnd diqglm ndnmeowp