Jest encountered an unexpected token react native github Jest encountered an unexpected token with react-native. Contribute to jestjs/jest development by creating an account on GitHub. None of the popular solutions here were working for me either. The error is "Jest encountered an unexpected token" and the Jest encountered an unexpected token. ; I ran yarn why @babel/core to see if it was still installed, and if so why. exports = { env: { test: { presets: [ [ '@babel/preset-env', { modules: 'commonjs', debug: false } ], '@babel/preset-flow', '@babel/preset-react' ], plugins You signed in with another tab or window. Thank you for your quick response. You switched accounts on another tab or window. Step 2: Describe your environment template name : re-start template version : ??? cloned repo a month ago OS : linux (mint) Platform causing error: jest in the ci "react-native": "0. Sign in Product GitHub Copilot GitHub community articles Repositories. If your bundle doesn't support native ES modules, you will need to use babel to transpile it. Version Jest: 29. By default, if Jest sees a Babel config, it will use that to transform Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. json, I have the failing test: FAIL src/tests/index. 🐛 Bug Report I am currently running into an issue where a jest test is breaking because I'm importing a package in another repo I have created in my package. , it's not plain JavaScript. SyntaxError: Invalid or unexpected token when testing react application with babel and jest. 2. js is completely ignored for some reason but works for other packages just fine. Hmm, not for me, at least when using npm. Using transformIgnorePatte Hello there 👋 this issue doesn't have a repro (which means, a react-native init-ed project with the minimal changes that leads to creating the same issue you are reporting). Reload to refresh your session. This Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. So, we need transform the code to a supported module type. js docs, but still same issue. module. Otherwise, you can try checking our examples which showcase a model, working setup: https://github. 6. Topics Trending jest, and react native testing library. Jest encountered an unexpected token ReactJS. But, when I do them using yarnit works. I expected the tests to run without errors. So for the Jest tests to run, it first needs to be transpiled by Babel. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Jest encountered an unexpected token Jest failed to parse a file. By default, if Jest sees a Babel config, Jest encountered an unexpected token – SyntaxError: Unexpected token 'export' I’m using jest to test a react typescript app. This is the test I’m running: Jest failed to parse a file. Out of the box Jest supports Babel, which will be used Depending upon your setup, you might see the error on the first line of the code file or you might see it when the code tries to process JSX. I was able to reproduce it only once. The failure was not the usual "cannot use import statement", but rather some disconnect in the code that Jest doesn't work with import { Web } from "@pnp/sp/webs"; 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 refrenced in your package. We could use babel-jest or ts-jest. Unexpected token 'export' There seems to be an issue with your configuration that prevents React Native Testing Library from working correctly. While using old babel version everything worked fine, but because of some project problems we had to upgrade babel to 7 You signed in with another tab or window. I don't understand much of the whole babel transformation pipeline, but if you open the preprocessor. That means the contents of the react-native npm package is not transformed, while it Saved searches Use saved searches to filter your results more quickly You signed in with another tab or window. g. Asking for help, clarification, or responding to other answers. 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. $ npx jest FAIL . To put this in different terms, I'm using Jest to test a package with "modern" JavaScript, which in-turn imports another package with "modern" JavaScript. Jest encountered an unexpected token inside ts-jest/node_modules/jest-util Hi all, I'm trying run jest using ts-jest, but I'm running into the following error: Jest encountered an unexpected I have the same issue. 1 Steps to reproduce Our current project is using jest 27. Version 29. EDIT. Another odd data point: using axios@1. 5. Unset the EXPO_DOCTOR_ENABLE_DIRECTORY_CHECK environment variable to disable this check. json which breaks the test that imports that package. Hi guys! The library is amazing. This means that a file is not transformed through TypeScript compiler, e. By default, if Jest sees a Babel config, it will use that to When I try to test it with jest i have: "Jest encountered an unexpected token This usually means that you are trying to import a f Skip to content. json, you will see that files from the node_modules subdirectory are excempted from beeing transformed to ES5 (see link, line 19):. 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 Skylerdw changed the title Jest encountered an unexpected token Jest encountered an unexpected token - "import *" Jan 27, 2021. Select Topic Area Bug Body 1 I attempted to run Jest tests for TypeScript code in a React Native project. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is n I am building an expo react-native app with expo SDK 36. To Jest encountered an unexpected token. @example/b will have a dependency on @example/a. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. It all works great, until I run yarn Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. And adding the transformIgnorePatterns makes other tests fails (that use react-native-camera for instance). By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". By default, if Jest sees a Babel config, it Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Skip to content Toggle navigation. 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 Hey mikeborozdin, thanks for reporting this issue! React Native, as you've probably heard, is getting really popular and truth is we're getting a bit overwhelmed by the activity surrounding it. Nevermind. json when using create-react-app. Jest encountered an You signed in with another tab or window. 1 using yarn install. I've added the module react-qr-reader which in turn uses the modules webrtc-adapter. @JanithaR this does not solve the problem. 71. Tests fail when executed due to unexpected react-dnd syntax: Relevant Package Versions / Background. test. 0 You signed in with another tab or window. And Jest doesn't like it. My quick workaround was to copy all files from the node_modules\react-svg-pan-zoom\build-es folder into my project\src\components\svg folder. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. 0 Steps to reproduce Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. For anyone using create-react-app, only certain jest configurations can be changed in package. You signed in with another tab or window. 1 and babel-jest to 29. Find and fix vulnerabilities Codespaces. Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. it 's not plain JavaScript. /example. Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. This is sounding like a problem of NPM's non-determinism 😓. I don't think Babel is missing the react preset, firstly because it is installed and secondly because the app would not run. ts Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. 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. We upgraded jest to 29. I am running the tests on the CLI by running npx jest <test file> and this works flawlessly. Jest encountered an Do you want to request a feature or report a bug? Report a bug What is the current behavior? I am using the same testing setup in several projects right now, all from my boilerplate. export function flatten (target, opts) { ^^^^^ SyntaxError: Unexpected token 'export' I made sure my jest was properly installed and set up, as per Next. I tried comparing the diffs of You signed in with another tab or window. @KristianLonergan sounds great. Essentially, you need to add this to your Jest configuration: You signed in with another tab or window. 这个特性解决了什么问题？ 想做react-native的单元测试，但是遇到报错如下： Test suite failed to run Jest encountered an unexpected token Test suite failed to run, Jest encountered an unexpected token Hey everyone, I recently imported the @FluentUI\react-charting module into my UX code so I could create a sparkline chart, and everything compiles and renders correctly. The Issue. 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 I have a test for a test for a TSX file written in a JSX file which fails to run due to unexpected token: Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Provide details and share your research! But avoid . Instant dev environments amcharts4 issue #2133 - github OR Jest encountered an unexpected token. 4", "react-n 🐛 Bug Report Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. I recommend using ts-jest for simplicity. App bootstrapped with "create react app" Jest encountered an unexpected token Jest failed to parse a file. I saw it on line 1, because line 1 is almost always occupied by an import statement - Jest encountered an unexpected token Jest failed to parse a file. It looks like you're using webpack with babel-loader, so the only thing you need to do is make sure babel-loader actually picks up react-quill-new. Not one bit. All reactions Importing PDF and Document directly from 'react-pdf If you are using libraries such as react-native-paper or @react-navigation/native, you are likely to run into the below error: Jest encountered an unexpected token Jest failed to parse a file. Hot Network Questions Zombie/monster movie with couple in nightclub/bar Jest encountered an unexpected token Jest failed to parse a file. spec. ; I upgraded ts-jest (it was 22). Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. This whole mock jest thing feels very brittle. js until node will implement support of modules without a flag. Issue : I am using ts-jest to test my typescript library. Unfortunately, I have no way of helping you in a meaningful way – there is no easy way for me to recreate the situation and check that the issue reported is still there when changing I'm developing a React app with a QR-scanner in it with create-react-app. B. Defining mocks/react-native-vector-icons. 5. This happens e. Jest will also need to pass an --experimental-modules flag to node. However, while running npm i, 🐛 Bug Report In my jest tests, when i attempt to run jest, this is output: FAIL test/product. 0. Issues with CJS vs ESM You signed in with another tab or window. What you did: Running Jest tests for a React Native project with the configuration and code provided above. By default, if Jest sees a Jest failed to parse a file. This usually means that you are trying to import a file which Jest cannot parse, e. However, if I attempt to run the te Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. ts FAIL tests/bsv/fee. I am getting the message 'Jest encountered an unexpected token' for all my unit tests when setting up jest-runner-eslint in projects: module. The "issue" is that Jest only wants to process CommonJS-style code. Quill >= 2. 2. 4. Check package. Jest encountered an unexpected token when working with React TypeScript. You signed out in another tab or window. If folks can't answer your question from what's in your post alone, your post is incomplete (and note that the minimal example requires some work on your part - that's intentional. 23. 0 moves to native ES modules, and so ReactQuill did too. As answers above have described, Jest doesn't support ES6 modules. exports = { roots: ['<rootDir>'], moduleNameMapper: { '. 5 without any issues. 0 and jest@27 (due to create-react-app, although I tried manually upgrading to jest@29 and it didn't seem to affect this scenario), the transformIgnorePatterns solution worked with npm, but not after I switched to pnpm. I have issues with Jest picking up an internal library, Jest would display 'unexpected token' errors wherever I had my imports from this library. Automate any workflow Packages. when your code or its dependencies use non-standard JavaScript syntax, or when Jest Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. controller. When running jest on @example/b it fails to run due to ESM syntax. Sign up Product Actions. Error: I got the following error: Jest encountered an unexpected token Jest failed to parse a file. it's not pla Enabled experimental React Native Directory checks. after rm -rfing node_modules, reinstalling the dependencies it started to work. Jest encountered an unexpected token. This problem h Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Turns out babel 7 WILL be chosen and installed because of react So I'm trying to write tests on my React Native app with Jest and TypeScript. 1 and babel-jest 26. Host and manage packages Security. it's not plain JavaScript. 3 with React Native 0. jsx Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cann Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. Navigation Menu Toggle navigation. However, I encountered the Jest encountered an FAIL src/utils/html-to-markdown. 70. when your code or its dependencies use non-standard JavaScript syntax, or when Jest Current Behavior I want to independently publish @example/a and @example/b. Explain what you did i use react-native-web react-native-elements jest and, i try to test a component who use react-native-elements by jest Expected behaviour test will pass Describe the bug FAIL s PS C:\Users\myland\code\services\packages\open-api> npx jest PASS tests/bsv/health. By default, if Jes Oof, so: when I do the steps at the top using npm, it still fails the same way. I had to edit the files, by moving the import statements to the top of the files, and instead importing the plugin from node_modules, I imported it from this new folder. Copy link Also ensure you're running newest version of Jest, although they still work on native support for ESM modules: jestjs/jest#9430. In order to support ES modules Jest needs to add a recognition of those extensions. it's not plain 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 sipped with it. . Thank you ️☺️! I am using Jest + React Native + TypeScript to write test cases for my application. nx/pa Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. com Describe the bug I have a project for react, typescript, in which I have dependencies coming as ecm modules. 3, my jest tests are failing. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. This Enabled experimental React Native Directory checks. I am using @microsoft/applicationinsights-react-native and when running my tests I am getting this: Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e. Step 1: installation: You signed in with another tab or window. I'm not sure if any other required changes would be needed within Jest in order to support this. because it is a JS file with TS syntax, or it is published to npm as uncompiled source files. With 9. 55. After upgrading from expo SDK 47 to 48 and consequently upgrading react-native to 0. Links to third party websites are only allowed in addition to having the minimal reproducible example in your post. jcelim yvib yzm rwee zgassk xveb qhej xrd yudrimj gcyja pfoee nok ovr mtsjy kcvxn