React native jest cannot find module. tsx Any test that m...
React native jest cannot find module. tsx Any test that mocks something from react-native (such as jest. I'm finding that the app that is consuming the library is bundling it in the wrong order. 7" native-testing-library version: "@testing-library/react-native": "^4. . All the paths are correct and the code runs smoothly when I remove the test. fn I am setting a configuration to run my tests in a create-react-app + typescript app (from which I have ejected). o. 23. The project runs fine on the Expo Go app on my Android device, but when I try to view it in a web browser on my Windows laptop, I keep getting the following error: Customer stories Events & webinars Ebooks & reports Business insights GitHub Skills Error: cannot find module most commonly occurs when a non-existent module is attempting to be loaded in Node. 0. This guide covers common causes of the error, such as missing modules, incorrect module paths, and conflicting module names. For example, if our webpack config looks like this: I am using create-react-app without ejecting. /components/Button), not your project’s src/ directory unless explicitly told. I am going through package updates, and somewhere @apollo/react-common @apollo/react-hooks @apollo/react-components @apollo/react-hoc @apollo/react-ssr @apollo/react-testing The react-apollo package has been deprecated, and the functionality offered by each of the above packages can now be accessed from @apollo/client directly: @apollo/react-hooks -> now available directly from @apollo/client If you see the error Cannot find module 'jest' , don't worry. /src' so I can use This issue arises because Jest tests run in a Node environment, which does not support native modules used in a React Native application. 7" jest-preset: preset: '@testing-library/react-native Jest/Webpack/SWC: Cannot find module (a relative file) Asked 4 years ago Modified 3 years, 8 months ago Viewed 2k times. js jest. I then went into the ios folder and ran pod install. Here’s how to fix it. The error I'm getting is: Cannot find module… I am exploring making a component library using React and rollup. 26. References Jest Documentation: moduleNameMapper ts-jest Documentation: pathsToModuleNameMapper TypeScript tsconfig Nov 4, 2024 · Resolving Module Errors in React Testing for Reliable Component Rendering The first solution leverages moduleNameMapper in the Jest configuration file to map specific paths and resolve them. /faye This appears to do the trick: > np Ask your Question Edit: I just noticed #1600 already discusses the issue. These errors typically arise when Node. mock ('react-native-device-info', () => { return { getModel: jest. config. First one or two test suits fails because of that, rest are passing. Dec 24, 2025 · Jest’s Role: Jest runs tests in a Node. /node_modules/react-tag-input/dist- The web development framework for building modern apps. js:469:15) at Function. Is this the To solve the error Module not found: Error: Can't resolve 'react/jsx-runtime', update the `react` package. js projects. It automatically generated presets for me after the installation is completed. Here is a link with the necessary documentation to set up Webpack which in some cases will not be necessary. After some research, I found a solution to mock the expo-clipboard module in the Jest environment. mock('Platform')) gives the error Cannot find module '*' from test/file/directory. g. json o Jest asks for react-dom dependency in the React Native app. All my tests are failing when trying to mock react-native-device-info, any ideas? testenv. Possible Ways to Fix It The module you're trying to import is not installed in your dependencies When importing a module from npm this module has to be installed locally. js' Cannot find module 'React' from 'ReactNativeDefaultInjection. mock("react-native-image I am trying to run my project's tests on my CI/CD machines. json with a name that does not correspond to the npm package name: jest is failing with Cannot find module ‘zxing’ from ‘scanner. After pulling down a module from GitHub and following the instructions to build it, I try pulling it into an existing project using: > npm install . js Is there any suggestion on how to configure Jest to override this problem? reactjs react-native jestjs enzyme edited Nov 5, 2018 at 10:01 skyboyer 24k76573 asked May 30, 2018 at 16:20 MavrosGatos 5292722 Do you want to request a feature or report a bug? Report a bug. ts’ This seems to suggest that jest isn’t set up to use aurelia. Jest cannot find module: Learn how to troubleshoot and fix the 'jest cannot find module' error with step-by-step instructions and code examples. io/jest/docs/en/tutorial-react-native. I installed react-navigation, react-native-reanimated, react-native-gesture-handler, and react-native-screens@^1. Whenever I run jest test that imports Milkdown modules I got following error: Cannot find module '@milkdown/core' from 'src/MilkdownEditor. js' Nov 23, 2016 Author Richard-Cao commented Nov 23, 2016 • 5 I'm working on my first React Native project using React Native with Expo, and I'm encountering a frustrating issue. Whenever I tried to run jest I facing an error like this: Test Learn how to resolve the common Jest error when your React app tests cannot find modules due to misconfigured paths in your `tsconfig` and `jest` setups. This is causing the below error: bundle. a my dear groups mat, I have a problem in this material icons twice a day. The editor throws errors while importing every installed library like this: Cannot find module 'react' or its corresponding type It covers possible solutions such as checking the module name, verifying the module is installed, checking the module's installation location, cleaning the Node. js environment, which uses Node’s default module resolution. 0, when I run Jest tests I will get errors anywhere I was mocking a component or native module from React Native using the syntax where I mock the module/compone Trying to get Jest v12. I am using jest + enzyme. I am not sure if this has to do with the paths of the files. When I try to mock module I've error "Cannot find module 'react-native-image-picker' from 'test/mock-react-native-image-picker. I am trying to run react-native start and the following error appears "Cannot find module 'metro-core'. ---T After upgrading from 0. 60. It means your system can't locate the Jest testing fra Richard-Cao changed the title [React-Native]Cannot find module 'React' from 'ReactNativeDefaultInjection. I already tried below cases but still I got that issue. js' swsnu/swppfall2020#131 I’m trying to convert a project that currently uses karma for unit tests and I am running into an issue I believe is due to a module defined in aurelia. I Seen in my Metro Bundler console output: Error: Cannot find module 'jest-haste-map' at Function. js cache, reinstalling the module, updating Node. a. github. Testing React Native Apps At Facebook, we use Jest to test React Native applications. js' at Resolver. Jest Docs Webpack Here is a link to the docs that explains how to set up Jest with React Dec 1, 2025 · Babel: Use babel-plugin-module-resolver to map paths in Babel config. In my tsconfig. I am running a test for a component that needs to check if it has a particular CSS style. js' Asked 5 years, 8 months ago Modified 3 years, 1 month ago Viewed 5k times Updated: testPathIgnorePatterns to ignore all folders except "src" so we can remove roots: ["src"] which causes: "Cannot find module 'setupDevtools' from 'setup. But, if we’ve already configured our Typescript to use aliases, or we have a webpack config that has a resolve key for modules, then we’ll need to update our Jest configuration to understand how to resolve this path since by default Jest uses the same Node module resolution algorithm. 8. This is a common issue in Node. 1. Prior to getting are you using expo-cli or react-native-cli? if you using expo cli then no need to add dependency or if you using react-native-cli then you should import its package to the respective platform android or ios While I have the code/screens working, Jest is causing me issues after adding in the library by following the v4 docs. 1 working with React Native v0. 5 to 0. 59. // Required to correctly polyfill React-Native import { configure } from 'enzyme'; import Adapter from 'enz React Native Jest Error: Cannot find module 'warnOnce' from 'react-native-implementation. Module. Tests were working all fine until my PRs starting failing with npm ERR! npm ci can only install packages when your package. I want to running jest to test my component, I'm using React Native Testing Library to test and React Native Web to create an example. They are jest tests that have been running fine for some time on all my environments. json. Cannot find module '. jest. babelrc or jest. All the files below are I have the following setupJest. Try the following steps: Delete the node_modules folder and install again. Hi. test. It is resolving the base path to: . For example when importing the swr package: hello guys, im using react-native-linear-gradient, but i get an error, how can i fix it. Get a deeper insight into testing a working React Native app example by reading the following series: Part 1: Jest – Snapshot come into play and Part 2: Jest – Redux Snapshots for your Actions and Reducers. ts (2307) Getting issue when import the lucide-react library. js cannot locate a module you're trying to use in your code. _load (module. Cannot find module '~lib/dates' from This article outlines the steps you can take to troubleshoot and fix "Cannot find module" errors in your Node. , . json I have set baseUrl='. Setup Starting from react-native version 0. Hi I am trying to use Jest, but it keeps giving an error of cannot find module. I thought that will already solve my problem but unfortunately it still fails. /VideoTag' The three coponents are in the same directory that's why it actually works when I transpile it and see it in action in a browser but looks like Jest is having problems resolving those relative paths, this is the jest file: The app is working perfectly fine but Jest is giving me an error when I import the component. What is the current behavior? Throw Cannot find module 'react-native' from 'relayUnstableBatchedUpdates. This guide introduces React Native developers to the key concepts behind testing, how to write good tests, and what kinds of tests you can incorporate into your workflow. html I am using react-native 0. react-native or expo: "expo": "^33. js file that I use before running my React Native tests. js and npm, checking for typos or syntax errors, and consulting the module's documentation or community. I guess that Jest cannot get the paths included in index. Sometimes jest cannot find modules while running tests. The dependencies that jest couldn't find were all peerDependencies. ts'". js' Here's my package. I found the same issues here: mobxjs/mobx-react#844, but there is no working solution and the problem has been around for about a year. I have reinstall nodejs, create-react-app again and install packages, material icons, material icons show in Not sure if this is the issue, but there should be a preset: "react-native" part in your jest config, like stated here facebook. For those who are building something from scratch with Webpack and Babbel. 2 I have react application that use Milkdown editor. js:417:25) at Module. 38, a Jest setup is included by default when running Jul 28, 2024 · This issue arises because Jest tests run in a Node environment, which does not support native modules used in a React Native application. native. (This was something that solved my issue). 5, I did not reset . Description Cannot find module 'lucide-react' or its corresponding type declarations. When I'm trying to run tests: FAIL src/components/Button/tests/Button. If I were to run my package through travisci, it would run npm install and npm test, and it would never install these dependencies or be able to use them in the tests. it's totally random module each time, not the same one. tsx' I think the problem is related to the fact that @milkdown/core is an esm module. json for module resolution. j The "Old Version" label will be removed automatically once you edit your original post with the results of running react-native info on a project using the latest release. 2 I'm getting this error when run npm test: Error: Cannot find module 'ErrorUtils' from 'env. That module is using other external modules and jest is having a hard time resolving them. By aligning Jest’s module resolution with your project’s path conventions, you’ll enjoy clean, maintainable imports in both development and testing. Feel free to close my issue, I will keep that open in case that helps sol I created a new project using create-react-app and yarn 2 in vs code. mock('Dimensions'), jest. req I saw in the docs its possible to include bable in ts-jest because I'm using bable to import the 'module:react-native-dotenv', as plugin. resolv hy00nc mentioned this on Oct 11, 2020 [HW3] Cannot find module 'react' from 'react-router. js manually, I just installed the dependencies. Node looks for modules in node_modules/ or relative to the test file (e. I must have missed that when creating this issue. 61. Run CLI with --verbose flag for more details. _resolveFilename (module. 0-alpha. I would like to test this application using jest. As the React Native Testing Library doesn't have this function by default, I installed the @testing-library Trang chủ » Jest Cannot Find Module: Troubleshooting And Solutions Jest Cannot Find Module: Troubleshooting And Solutions by Hoàng Diệp July 7, 2023 I have been working on a React Typescript repo and have been running into an annoying issue where in jest is not able to resolve imports relative to root dir. json and package-lock. js'" I'm trying to build a mobile application with typescript, react-native, expo and jest. fgvj, 3x1vbi, oqbg, zunk, vzr4j1, u6h2, ah7n, tqnyuv, inst, jzibl5,