jest-config
Advanced tools
Package description
The jest-config package is used for configuring Jest, a popular JavaScript testing framework. It allows developers to programmatically access and manipulate Jest's configuration settings, making it easier to set up and customize tests for JavaScript projects. This package is particularly useful for complex setups or when integrating Jest into larger, automated workflows.
Accessing Default Configuration
This feature allows developers to access Jest's default configuration settings. It's useful for understanding the baseline configuration and for extending or customizing these defaults in a project.
const { defaults } = require('jest-config');
console.log(defaults);Generating a Custom Configuration
This feature enables the creation of a custom Jest configuration programmatically. It's particularly useful for dynamically generating configurations based on specific project requirements or environments.
const { makeConfig } = require('jest-config');
const customConfig = makeConfig({
rootDir: process.cwd(),
transform: {
'^.+\\.js$': 'babel-jest'
}
});
console.log(customConfig);Mocha is a feature-rich JavaScript test framework running on Node.js and in the browser, making asynchronous testing simple. While Mocha itself is not a configuration tool, it offers a flexible API and a variety of command-line options for configuring tests, similar to how jest-config allows for Jest test configuration.
Karma is a test runner for JavaScript that runs on Node.js. It is designed to work with any testing framework, such as Jasmine, Mocha, or QUnit. Karma itself is more about running tests in different environments rather than configuring a specific testing framework. However, it deals with the aspect of setting up testing environments, which can be seen as a parallel to configuring testing frameworks with jest-config.
AVA is a test runner for Node.js with a concise API, detailed error output, and process isolation that lets you develop with confidence. AVA's configuration approach is more direct and less flexible compared to jest-config, focusing on simplicity and convention over configuration.
Changelog
29.6.0
[jest-circus, jest-snapshot] Add support for snapshot matchers in concurrent tests (#14139)[jest-cli] Include type definitions to generated config files (#14078)[jest-snapshot] Support arrays as property matchers (#14025)[jest-core, jest-circus, jest-reporter, jest-runner] Added support for reporting about start individual test cases using jest-circus (#14174)[jest-circus] Prevent false test failures caused by promise rejections handled asynchronously (#14110)[jest-config] Handle frozen config object (#14054)[jest-config] Allow coverageDirectory and collectCoverageFrom in project config (#14180)[jest-core] Always use workers in watch mode to avoid crashes (#14059).[jest-environment-jsdom, jest-environment-node] Fix assignment of customExportConditions via testEnvironmentOptions when custom env subclass defines a default value (#13989)[jest-matcher-utils] Fix copying value of inherited getters (#14007)[jest-mock] Tweak typings to allow jest.replaceProperty() replace methods (#14008)[jest-mock] Improve user input validation and error messages of spyOn and replaceProperty methods (#14087)[jest-runtime] Bind jest.isolateModulesAsync to this (#14083)[jest-runtime] Forward wrapperLength to the Script constructor as columnOffset for accurate debugging (#14148)[jest-runtime] Guard _isMockFunction access with in (#14188)[jest-snapshot] Fix a potential bug when not using prettier and improve performance (#14036)[@jest/transform] Do not instrument .json modules (#14048)[jest-worker] Restart a shut down worker before sending it a task (#14015)[*] Update semver dependency to get vulnerability fix (#14262)[docs] Updated documentation for the --runTestsByPath CLI command (#14004)[docs] Updated documentation regarding the synchronous fallback when asynchronous code transforms are unavailable (#14056)[docs] Update jest statistics of use and downloads in website Index.FAQs
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The npm package jest-config receives a total of 18,507,233 weekly downloads. As such, jest-config popularity was classified as popular.
We found that jest-config demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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