@types/karma

What is @types/karma?

@types/karma provides TypeScript type definitions for the Karma test runner, which is a tool that allows you to run JavaScript tests in multiple real browsers. This package helps TypeScript developers by providing type definitions that ensure type safety and better development experience when working with Karma.

What are @types/karma's main functionalities?

Configuration

This feature allows you to define the configuration for Karma using TypeScript. The type definitions ensure that the configuration object adheres to the expected structure, providing type safety and autocompletion.

const karmaConfig: Karma.Config = {
  frameworks: ['jasmine'],
  files: ['src/**/*.spec.ts'],
  preprocessors: {
    'src/**/*.spec.ts': ['webpack']
  },
  browsers: ['Chrome'],
  singleRun: true
};

Karma Server

This feature allows you to create and start a Karma server programmatically using TypeScript. The type definitions ensure that the server and configuration objects are correctly typed.

import { Server, ConfigOptions } from 'karma';

const config: ConfigOptions = { /* Karma configuration */ };
const server = new Server(config, (exitCode) => {
  console.log('Karma has exited with ' + exitCode);
  process.exit(exitCode);
});

server.start();

Custom Launchers

This feature allows you to define custom browser launchers using TypeScript. The type definitions ensure that the custom launcher objects adhere to the expected structure.

const customLaunchers: { [key: string]: Karma.CustomLauncher } = {
  ChromeHeadless: {
    base: 'Chrome',
    flags: ['--headless', '--disable-gpu', '--remote-debugging-port=9222']
  }
};

Other packages similar to @types/karma

@types/jest

@types/jest provides TypeScript type definitions for Jest, a popular JavaScript testing framework. While Karma is primarily used for running tests in real browsers, Jest is often used for running tests in a Node.js environment. Jest also includes features like snapshot testing and a built-in mocking library.

@types/mocha

@types/mocha provides TypeScript type definitions for Mocha, a feature-rich JavaScript test framework running on Node.js and in the browser. Mocha allows you to use any assertion library and provides a flexible way to structure your tests. Unlike Karma, Mocha does not run tests in real browsers by default but can be integrated with other tools to do so.

@types/jasmine

@types/jasmine provides TypeScript type definitions for Jasmine, a behavior-driven development framework for testing JavaScript code. Jasmine is often used with Karma as the testing framework, but it can also be used independently. Jasmine provides a clean syntax for writing tests and includes built-in assertion functions.

README

Installation

npm install --save @types/karma

Summary

This package contains type definitions for karma (https://github.com/karma-runner/karma).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/karma.

Additional Details

• Last updated: Tue, 01 Feb 2022 21:01:26 GMT
• Dependencies: @types/log4js, @types/node
• Global values: none

Credits

These definitions were written by Tanguy Krotoff, James Garbutt, Yaroslav Admin, and Piotr Błażejewicz.