I'm setting up the tests for my web application, which works with the Vue framework with TypeScript, using the Jest framework. Everything seems to work alright, except with the @ symbol in my impor...

I'm getting an error when trying to run my test file (I'm using react typescript) ● Test suite failed to run Jest encountered an unexpected token Jest failed to parse a file. This happens e.g....

I have spent a long time looking at other questions about this and looking at other projects on Github but none of the answers seem to work for me. I am loading a third party library in my project...

I have the following line that executes correctly in browser eval(Babel.transform(template, { presets: ['react'] }).code); but when I run jest tests I am getting ReferenceError: React is not defi...

I'm having the follow error when running my tests with jest. console.error Error: Could not parse CSS stylesheet at exports.createStylesheet ([PERSONAL_PATH]/node_modules/jsdom/lib/jsdom/living/...

This error is coming up when I am making a pull request. There is a GitHub workflow audit that runs checks on the pull request and it loads the test file from another repository. - name: Run Audits...

I have a React application (not using Create React App) built using TypeScript, Jest, Webpack, and Babel. When trying to run yarn jest, I get the following error: I have tried removing all package...

I couldn't get rid of this SyntaxError: Cannot use import statement outside a module error no matter what I have tried and it got so frustrating. Is there anybody out here solved this issue? I have...

I want to test some code which uses the newly added decorators in TypeScript 5.0 (not experimental decorators), how can I make Jest interpret that code? I get SyntaxError: Invalid or unexpected tok...

I'm running into the following error when testing my application using jest: FAIL ● Test suite failed to run Cannot create styled-component for component: undefined. 30 | 31 | > 32 | e...

I'm working on a Ruby on Rails 7 app with a few JS web components written using lit element. I'm trying to add Jest to the project so we can unit test our web components. Not using Typescript, just...

I'm trying to write tests for my web components projects in jest. I already use babel with es2015 preset. I'm facing an issue while loading the js file. I have followed a piece of code where docume...

I am working on a Next.js project using TypeScript and for testing I use Jest and React Testing Lib. However, I encounter a SyntaxError: Cannot use import statement outside a module for components ...

If I use import/export from ES6 then all my Jest tests fail with error: Unexpected reserved word I convert my object under test to use old school IIFE syntax and suddenly my tests pass. Or, take ...

I'm trying to integrate Jest, (ts-jest) into my typescript project which uses styled-components/macros. But for some reason, Jest is complaining with the following error: ts-jest[versions] (WARN) V...

I am trying to run a test with Jest and I'm currently using jsx and tsx (changing from js to ts) in my react app but when I run my tests, all jsx tests are successful except those in tsx with optio...

I have a very simple test: describe('sanity', () => { it('sanity', () => { expect(true).toBeTruthy() }) }) And I'm receiving the following error: FAIL spec/javascript/sanity_test.js ...

Every time I run jest it never runs anything. I have let the counter go arbitrarily high. I have run jest with --no-cache jest --debug output is as follows: { "configs": [ { "automock": fals...

we were using jest from unit testing in react-native. It was working well. We just deleted npm and installed it again and then when we tried to run unit test(npm test) we are getting following erro...

i don't know why this is suddenly not working but this is my jest.config.js: module.exports = { preset: 'react-native', verbose: true, moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'n...

Issue Unable to transpile external package exported in ESM syntax Jest Version 29.5.0 Steps to reproduce Clone my repo at https://github.com/paulwongx/turborepo-jest-issue Install packages yarn wo...

While I am writing test case for my react component I am getting TypeError: Cannot assign to read only property 'x' of object '#' wherein while the application run it does not throw similiar err...

Several of my unit tests are failing to run with the following error: Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e.g. i...

In my react native project, I have recently installed node module react-native-async-storage as I received warnings about the native package from 'react-native' being deprecated and moved out to an...

Relatively new to Vuejs and testing its components. Using vue-test-utils and jest for testing. Getting following error test log The .vue file consists of template, component and styling. Below is...