install all packages again by running npm install. JEST: Cannot find module 'src/index from 'index.js' Resolver.resolveModule (node_modules/jest-resolve/build/index.js:276:11) node_modules index.js import { a } from 'src/index' 'src/index' import { a } from 'src/index' Kind of an old thread but recently, on top of the other suggestions of adding the paths on "moduleNameMapper": on jest.config.js and "paths": on tsconfig.json, I also had to include my test folder so the compiler could recognize it. Mutually exclusive execution using std::atomic? To learn more, see our tips on writing great answers. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Thanks for contributing an answer to Stack Overflow! Let's start from where we left it on the last article. Asking for help, clarification, or responding to other answers. And a drawback is that it's now easy to accidentally refer to a path that you shouldn't use in the lib (because the IDE now always uses all paths for code-assistance). For example, if you have paths in tsconfig.json defined as follows. Where does this (supposedly) Gibson quote come from? Asking for help, clarification, or responding to other answers. Let's see what solutions we have to apply module aliasing. How can I check before my flight that the cloud separation requirements in VFR flight rules are met? 22 Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2. Sign in to comment > jest FAIL test/userSelect.test.ts Test suite failed to run Cannot find module '../src/actions/selectUserById' from 'test/userSelect.test.ts' 8 | 9 | jest.mock ('mysql'); > 10 | jest.mock ('../src/actions/selectUserById'); 11 | 12 | const mockSelectUserById = selectUserById as jest.MockedFunction< 13 | typeof selectUserById at In case anyone else is troubleshooting a similar issue, Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2, Cannot find module jest-sequencer-@jest/test-sequencer, Find object by id in an array of JavaScript objects, Setting up Jest and Enzyme to test React 15 cannot find module react/lib/ReactTestUtils, Enzyme: Method text is only meant to be run on a single node. Asking for help, clarification, or responding to other answers. You can use this jest.config.js: module.exports = { preset: 'ts-jest', moduleNameMapper: { '^~/ (. Try the following steps: Delete the node_modules folder and install again. WebA Jest transformer with source map support that lets you use Jest to test projects written in TypeScript. Jest is throwing an error stating it cannot find the module specified by path in jest.mock(). .. If you have a monorepo where each project has its own tsconfig.json that extends from the base (root) tsconfig.json, and each project has its own jest.config.js, and you launch tests from the project root, you should add your moduleNameMapper to the jest.config.js in the project root. My configuration looks like this: *)$': '/$1', }, // etc }; 2 stevenpollack commented on Sep 14, 2021 any reason we can't have ts-jest resolve the tsconfig paths automatically? I have prediction that jsonld module is not in root directory but in js/ directory. Cannot find module '@reach/router' from 'node_modules/my_custom_module/dist/blah.js' At Resolver.resolveModule (node_modules/jest-runtime/node_modules/jest-resolve/build/index.js:306:11) at Object. (node_modules/my_custom_module/dist/blah.js:1:392) How do you get out of a corner when plotting yourself into a corner. I renamed a file, but somehow git didn't register it. It can be simplified by pathsToModuleNameMapper() method in ts-jest/utils. Does ZnSO4 + H2 at high pressure reverses to Zn + H2SO4? There are 3627 other projects in the npm registry using eslint-plugin-jest. The @ here is an arbitrary character to define the root project, you can define your own. *)$': '/$1', }, // etc }; 2 stevenpollack commented on Sep 14, 2021 any reason we can't have ts-jest resolve the tsconfig paths automatically? What is the difference between 'it' and 'test' in Jest? Also note that the APIs Jest uses to implement ESM support are still considered experimental by Node (as of version 18.8.0 ). Webwith the cloned version after upgrading the dependencies: see Update deps & Jest config for Windows ijdickinson/vue-cli-jest-problem#1 (needed to change the jest config for Windows following a fix in the jest generator which will be available in the next release). Replacing broken pins/legs on a DIP IC package. To learn more, see our tips on writing great answers. The difference between the phonemes /p/ and /b/ in Japanese. rev2023.3.3.43278. Start using eslint-plugin-jest in your project by running `npm i eslint-plugin-jest`. Why is this sentence from The Great Gatsby grammatical? Rather than copy those files into this post, you can see them, with the whole project directory, at the repo here: https://github.com/slutske22/react-esri-leaflet. Create a file, call it whatever you want, I called it vscode.js and copy this line. Refresh the page, check Medium s site status, or find something interesting to read. I used git mv to commit the case-sensitive filename, and this resolved my issue. Cannot find module '@reach/router' from 'node_modules/my_custom_module/dist/blah.js' At Resolver.resolveModule (node_modules/jest-runtime/node_modules/jest-resolve/build/index.js:306:11) at Object. (node_modules/my_custom_module/dist/blah.js:1:392) You can use this jest.config.js: module.exports = { preset: 'ts-jest', moduleNameMapper: { '^~/ (. I like the makeModuleNameMapper function, but I don't think we should do that honestly. Ref Pourya Da Feb 28, 2021 at 7:15 This time they will be imported using the relative paths. What's the difference between a power rail and a signal line? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. thanks, Cannot find module 'src/api/2 - services/services.module' from 'api/1 - controllers/wizard-controller/wizard.controller.spec.ts', And inside my package.json, in Jest config, I had the following property: The difference between the phonemes /p/ and /b/ in Japanese. Jest configuration / error - Cannot find module "" from "", TypeScript getting error TS2304: cannot find name ' require', Got "TS2300: Duplicate identifier 'Account'" error after upgraded to Typescript 2.9.1, Jest gives `Cannot find module` when importing components with absolute paths, Jest won't transform the module - SyntaxError: Cannot use import statement outside a module, Jest, ts-jest, typescript with ES Modules import : cannot find module, Typescript Module published in NPM Registry - Cannot find module when used in different project, Test unable to run test cases exits with TypeError: Jest: a transform must export a `process` function, "Cannot find module" (How to use Jest in a nested project that uses a shared folder), Cannot find module 'ts-jest/dist/config/config-set'. Got the idea from their docs https://docs.expo.dev/guides/testing-with-jest/. 4 comments AlCalzone commented on Nov 18, 2021 I'd be willing to implement a fix . There are 3627 other projects in the npm registry using eslint-plugin-jest. On the Gitlab-CI environment 2 of our Jest tests fail with Cannot find module. rev2023.3.3.43278. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If this happens to you in monorepo here's what fixed the problem for me: Adding the following to my jest config in package.json resolved this problem for me. Now my tests run. Whats the grammar of "For those whose stories they are"? To do so, well need to define moduleDirectories within the jest.config.js: jest.config.js const path = require("path") module.exports = { rootDir: ". Good lord thanks @RyanPWalker for the insight! Found this site which gave a clue about what could be done: to configure Jest's moduleNameMapper property. Why are physically impossible and logically impossible concepts considered separate in terms of probability? One of my test files, called Component.js, starts with some simple imports: When I run npm run test, I get this error: Even if I comment out the react import, I get this error: This is happening not just with react, but with any node modules imported in the test, or imported in any module that the test imports. If so, how close was it? You just need to add a resolve.alias property in your webpack configuration. Can Martian regolith be easily melted with microwaves? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Final step, go to your jest config, and define a module mapper like this. I'm using Nest. My configuration looks like this: Could this be one reason? Follow Up: struct sockaddr storage initialization by network format-string, Is there a solution to add special characters from software and how to do it. ", moduleDirectories: ["node_modules", path.join(__dirname, "./src/shared")], } How to resolve "Cannot use import statement outside a module" from Jest when running tests? Not the answer you're looking for? Do new devs get fired if they can't solve a certain bug? How to follow the signal when reading the schematic? Continuous learner. Is it possible to rotate a window 90 degrees if it has the same length and width? Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2, TypeScript getting error TS2304: cannot find name ' require'. Redoing the align environment with a specific formatting, Short story taking place on a toroidal planet or moon involving flying. What is the point of Thrower's Bandolier? Custom jest matchers to test the state of the DOM. Can Martian regolith be easily melted with microwaves? This one worked for me '^src/(. Find centralized, trusted content and collaborate around the technologies you use most. Exports and module factories and mock | by Tyler Hawkins | codeburst Write Sign up Sign In 500 Apologies, but something went wrong on our end. Did this satellite streak past the Hubble Space Telescope so close that it was out of focus? I am setting a configuration to run my tests in a create-react-app + typescript app (from which I have ejected). To subscribe to this RSS feed, copy and paste this URL into your RSS reader. There are 2991 other projects in This can also be caused by absolute imports present in the globalSetup file (or any files it references). You just need to add a resolve.alias property in your webpack configuration. I'm for convention over configuration, but this is the config file. Configuring Module Resolution On Typescript and Jest | by Gokul Chandrasekaran | Medium 500 Apologies, but something went wrong on our end. If you take a In tsconfig.json, find your absolute paths definition. How do I align things in the following tabular environment? Since it's looking into src directory you should use: import AppContainer from 'views/app'; Please note that this path is absolute to the src directory, you do not have to navigate to locate it as relative path. JEST: Cannot find module 'src/index from 'index.js' Resolver.resolveModule (node_modules/jest-resolve/build/index.js:276:11) node_modules index.js import { a } from 'src/index' 'src/index' import { a } from 'src/index' I'm trying to include jsonld module from https://github.com/types/jsonld and everything seems work fine, but when i run command yarn test i have error message Cannot find module 'jsonld' from 'DidDocument.ts'. My main file App.js which I am trying to test is within my src folder. So in your jest.config.js file: That's because jest doesn't recognize relative imports like src/views/app, Add a rootDir and a modulePaths in package.json, Make sure you have run npm i or npm install after update the package.json. To learn more, see our tips on writing great answers. ", moduleDirectories: ["node_modules", path.join(__dirname, "./src/shared")], } Are there tables of wastage rates for different fruit and veg? Adding this snippet to your package.json should allow you to take your custom name and map it to your actual folder: "moduleNameMapper": { "^@fooBar/ (. Start using ts-jest in your project by running `npm i ts-jest`. What is the correct way to screw wall and ceiling drywalls? Not the answer you're looking for? The strange thing is that it works on my local Win10 machine - even when I run the tests in a similar docker-container (node 12.12.0). where is the root of the directory containing your Jest config file or the package.json. https://facebook.github.io/jest/docs/en/configuration.html#modulenamemapper-object-string-string. just modify jest.config.js like this: in my case, I do not have any paths in tsconfig.json but I have baseUrl set to src. Linear Algebra - Linear transformation question. Test suite failed to run - Cannot find module, Cannot find module 'redux' from 'index.js', https://www.npmjs.com/package/jsdom-global, are you able to run jest test from command line?