Huge News!Announcing our $40M Series B led by Abstract Ventures.Learn More
Socket
Sign inDemoInstall
Socket

jest-haste-map

Package Overview
Dependencies
Maintainers
2
Versions
273
Alerts
File Explorer

Advanced tools

Socket logo

Install Socket

Detect and block malicious and high-risk dependencies

Install

jest-haste-map

`jest-haste-map` is a module used by Jest, a popular JavaScript testing framework, to create a fast lookup of files in a project. It helps Jest efficiently locate and track changes in files during testing, making it particularly useful for large projects

  • 30.0.0-alpha.1
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
35M
decreased by-11.56%
Maintainers
2
Weekly downloads
 
Created

What is jest-haste-map?

The jest-haste-map npm package is a utility for building a Haste map, which is a mapping from module names to file paths. It is used by Jest to quickly resolve module dependencies for tests by keeping an in-memory map of all available modules. It can handle duplicate module names and provides a way to query the map for a specific module.

What are jest-haste-map's main functionalities?

Building a Haste Map

This code sample demonstrates how to create a new HasteMap instance with a configuration object, build the map, and then use it to get the module name for a specific file.

const HasteMap = require('jest-haste-map');
const config = {
  // These options are required:
  roots: ['/path/to/project'],
  extensions: ['js', 'json'],
  platforms: ['ios', 'android'],
  // You can provide additional options:
  computeSha1: true,
  // other options...
};
const hasteMap = new HasteMap(config);
hasteMap.build().then(map => {
  console.log(map.hasteFS.getModuleName('/path/to/project/file.js'));
});

Querying the Haste Map

This code sample shows how to query the built Haste map for the path of a module given its name, platform, and whether it supports the native platform.

hasteMap.build().then(map => {
  const modulePath = map.moduleMap.getModule('moduleName', 'platform', 'supportsNativePlatform');
  console.log(modulePath);
});

Other packages similar to jest-haste-map

FAQs

Package last updated on 30 Oct 2023

Did you know?

Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap
  • Changelog

Packages

npm

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc