ts-jest | A Jest transformer with source map support that lets you use Jest to test projects written in TypeSc | Frontend Framework library

by kulshekhar TypeScript Version: 29.1.4 License: MIT

X-Ray Key Features Code Snippets(2)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | ts-jest Summary

ts-jest is a TypeScript library typically used in User Interface, Frontend Framework, React, Jest applications. ts-jest has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript.

Support

Quality

Security

License

Reuse

Support

ts-jest has a medium active ecosystem.

It has 6552 star(s) with 438 fork(s). There are 34 watchers for this library.

There were 2 major release(s) in the last 6 months.

There are 54 open issues and 878 have been closed. On average issues are closed in 88 days. There are 4 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of ts-jest is 29.1.4

Quality

ts-jest has 0 bugs and 0 code smells.

Security

ts-jest has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

ts-jest code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

ts-jest is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

ts-jest releases are available to install and integrate.

Installation instructions are available. Examples and code snippets are not available.

It has 234 lines of code, 0 functions and 256 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of ts-jest

Get all kandi verified functions for this library.

ts-jest Key Features

No Key Features are available at this moment for ts-jest.

ts-jest Examples and Code Snippets

Can not run tests with Jest on NestJS

Lines of Code : 8

License : Strong Copyleft (CC BY-SA 4.0)

Copy

yarn ts-jest config:init

module.exports = {
   preset: 'ts-jest',
   testEnvironment: 'node',
   modulePaths: ['/src'],
}

Cannot find module @ionic/angular (ionic 4) from test-file

Lines of Code : 37

License : Strong Copyleft (CC BY-SA 4.0)

Copy

// jest.config.js
module.exports = {
  globals: {
    // jest-preset-angular sets ts-jest tsConfigFile as "src/tsconfig.spec.json". This overwrites
    // it to use the default `tsconfig.json`. You can change this to your preferred config.

Community Discussions

Trending Discussions on ts-jest

Nest.js - "Invalid command: start"

Installed NPM Package is Missing TypeScript Compiled JS Files and Declaration Files

Errors running tests using Angular v13 + Jest + ESM + NGXS

This file is being treated as an ES module because it has a '.js' file extension

An unhandled exception occurred: The requested module 'sourcemap-codec' does not provide an export named 'decode'

Jest Coverage shows me code coverage report already compiled

Babel error while running Jest/Enzyme tests on React Native

Vue 2 based , vue-cli, vue-property-decorator, vue-class-component, Vuetify, project migration to Vue 3

React slick compatibility with Nextjs

Jest encountered an unexpected token - SyntaxError: Unexpected token 'export'

QUESTION

Nest.js - "Invalid command: start"

Asked 2022-Apr-07 at 18:09

This app worked for a long time in docker container and recently it even doesn't launch.

In docker container I've this error:

...

ANSWER

Answered 2022-Apr-07 at 18:09

The @nestjs/cli dev dependency should be up on version 8 with the rest of the @nestjs/ dependencies. @nestjs/cli v5 doesn't have a start command

Source https://stackoverflow.com/questions/71783092

QUESTION

Installed NPM Package is Missing TypeScript Compiled JS Files and Declaration Files

Asked 2022-Mar-24 at 02:31

I've published a TypeScript library onto NPM. On GitHub the dist (Link to Repository Folder) directory contains all the compiled JavaScript and d.ts files. However when running npm i the result is a module with a dist folder only containing an index.js, the src folder is still present with the TypeScript files. The dist/src folder along with it's JavaScript and d.ts files are not found on the installed package consequently my module is not recognized or typed in Vanilla JavaScript projects.

Library tsconfig.json:

...

ANSWER

Answered 2022-Mar-24 at 02:31

To publish the types, you will need to explicitly include the dist directory in the files field of your package.json. Merely specifying the file in types won't actually include it. For main this is different, as it will automatically include the specified file. According to the npm package.json docs:

Certain files are always included, regardless of settings:

package.json

README

LICENSE / LICENCE

The file in the "main" field

To easily verify which files are included, npm pack --dry-run is handy.

Source https://stackoverflow.com/questions/71595780

QUESTION

Errors running tests using Angular v13 + Jest + ESM + NGXS

Asked 2022-Mar-07 at 15:08

The migration from Angular v12 to v13 has been tough and while the app functions perfectly, the tests are still a problem on our side.

We have been running v12 tests using Jest with ESM (because we have a WebWorker and the import.meta.url requires ESM since v12) successfully as of now.

But now that v13 ships with only ES Modules it breaks in some third party libraries requiring angular code.

Now that the jest-preset-angular supports running v13 + ESM with a working example app I thought I'd give it another try. This is also being discussed in NGXS's slack.

My current very basic config is the following:

...

ANSWER

Answered 2022-Mar-07 at 15:08

I couldn't make it work while preserving the import.meta.url syntax with Jest which requires Node to be run with the --experimental-vm-modules flag.

I noticed that I could run my test using a classic ESM config as long as the node flag wasn't there.

So I resorted to transforming the import.meta.url syntax back to CommonJS in my test config using this babel plugin

Source https://stackoverflow.com/questions/70822764

QUESTION

This file is being treated as an ES module because it has a '.js' file extension

Asked 2022-Mar-04 at 02:27

Now I want to use jtest to do a unit test in the typescript (Node version v16.13.2)project, first I install the jtest "jest": "^27.5.1". Add jest.config.js file:

...

ANSWER

Answered 2022-Mar-04 at 02:27

You probably have "type": "module" in your package.json file. If you remove that it will fix this.

Alternatively, if you want to keep your "type": "module" you could convert your jest.config.js to be jest.config.json (and/or if you have a babel.config.js you will need to convert that one to be babel.config.json as well). Note that you will actually have to convert it to be in JSON format (so, remove module.exports = from it, etc).

This example project goes way more in depth on all this

Source https://stackoverflow.com/questions/71321728

QUESTION

An unhandled exception occurred: The requested module 'sourcemap-codec' does not provide an export named 'decode'

Asked 2022-Mar-03 at 14:48

On Upgrading, to angular 13, My build step on pipeline is failing. My initial version was 11, on upgrading to 12 the build worked fine but on upgrading from 12 to 13, it started giving me this error on pipeline. The build is running fine on local but failing on pipeline.

I have also added the package.json file code and dependencies and also added the image that displays error.

...

ANSWER

Answered 2022-Mar-03 at 14:48

I was facing the same issue which is why I stumbled across this post.

My issue was I was using the wrong node version. I faced a similar issue after upgrading to Angular 13 but I was using node version v14.2.0.

I changed the node version to v14.15.0 and it worked.

nvm use v14.15.0

PS: NVM manages multiple nodejs versions.

Source https://stackoverflow.com/questions/71331825

QUESTION

Jest Coverage shows me code coverage report already compiled

Asked 2022-Mar-02 at 20:23

I'm using React and when I run the unit tests with "jest --coverage", the coverage report shows me the already compiled code (attached image).

It should show me in the report the component as I wrote it (I attach the code of my component).

Here the versions of the dependencies:

...

ANSWER

Answered 2022-Mar-02 at 20:23

I found the solution, it was just in the file jest.tsconfig.json change the field "sourceMap" to true:

Source https://stackoverflow.com/questions/71302217

QUESTION

Babel error while running Jest/Enzyme tests on React Native

Asked 2022-Mar-02 at 16:48

After a huge package upgrade, when running Jest tests on our application, we have this error :

...

ANSWER

Answered 2022-Mar-02 at 16:48

Updating Jest and Babel (and all our modules) fixed the bug...

Source https://stackoverflow.com/questions/71292944

QUESTION

Vue 2 based , vue-cli, vue-property-decorator, vue-class-component, Vuetify, project migration to Vue 3

Asked 2022-Feb-18 at 14:50

I am working on project upgrade from Vue 2 to Vue 3. The code base changed according to Vue migration documents: https://v3.vuejs.org/guide/migration/introduction.html#overview. I have mismatch of above mentioned libraries. Does somebody has a running project and would share their working library versions

Current mismatch error is :

...

ANSWER

Answered 2022-Feb-18 at 14:50

My colleague solved it by moving to Vite. My suggestion would be to drop webpack and use Vite instead.

Migration guide for Vue 2 to 3 here: https://v3-migration.vuejs.org/ Vuetify migration guide: https://next.vuetifyjs.com/en/getting-started/upgrade-guide

Source https://stackoverflow.com/questions/70909114

QUESTION

React slick compatibility with Nextjs

Asked 2022-Jan-29 at 13:37

I am planning to add React-slick library into my nextjs project for image slider, but getting an issue

Tries installing "react-slick" and "slick-carousel" as mentioned in the docs by