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Data Theft Repackaged: A Case Study in Malicious Wrapper Packages on npm
The Socket Research Team breaks down a malicious wrapper package that uses obfuscation to harvest credentials and exfiltrate sensitive data.
jest-haste-map
Advanced tools
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.
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);
});
Metro is a JavaScript bundler for React Native applications. It includes a Haste map implementation similar to jest-haste-map, but it is tailored specifically for React Native and includes additional features for bundling and transforming code.
Webpack is a powerful module bundler for JavaScript applications. While it does not use a Haste map, it provides a similar functionality through its own resolution mechanism, which can handle complex dependency graphs and offers a wide range of plugins for different tasks.
Browserify is a tool for bundling JavaScript files for usage in the browser. Like webpack, it does not use a Haste map, but it allows developers to require modules in the browser by bundling up all dependencies. It's simpler than webpack and may be more suitable for smaller projects.
29.7.0
[create-jest]
Add npm init
/ yarn create
initialiser for Jest projects (#14465)[jest-validate]
Allow deprecation warnings for unknown options (#14499)[jest-resolver]
Replace unmatched capture groups in moduleNameMapper
with empty string instead of undefined
(#14507)[jest-snapshot]
Allow for strings as well as template literals in inline snapshots (#14465)[@jest/test-sequencer]
Calculate test runtime if perStats.duration
is missing (#14473)[@jest/create-cache-key-function]
Cache access of NODE_ENV
and BABEL_ENV
(#14455)[jest-cli]
Move internal config initialisation logic to the create-jest
package (#14465)FAQs
Unknown package
The npm package jest-haste-map receives a total of 29,430,113 weekly downloads. As such, jest-haste-map popularity was classified as popular.
We found that jest-haste-map demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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