Web-extension Packages

An in-memory implementation of webextension-polyfill for testing. Supports all test frameworks (Vitest, Jest, etc)

Isolate content script UI's styles from the parent page. Supports all browsers (Chrome, Firefox, Safari)

Schedule and run jobs in your background script

Utilities for working with match patterns.

Light weight, type-safe wrapper around the web extension messaging APIs. Supports all browsers (Chrome, Firefox, Safari)

A type-safe wrapper around the web extension messaging APIs that lets you call a function from anywhere, but execute it in the background. Supports all browsers (Chrome, Firefox, Safari, etc)

A type-safe, localStorage-esk wrapper around the web extension storage APIs. Supports all browsers (Chrome, Firefox, Safari, etc)

Web-extension Compat Data provides a way to generate and reference web-extension compatibility data in your apps or web-extensions.


A CLI tool to quickly scaffold Chrome extension projects with modern tooling

Bugsnag client for JS contexts without the 'window' global

A file loader module for webpack optimized for use in web extensions

A simple tool to get you started on building a browser extension.

Node and Browser env supported WebAssembly version of fastText: Library for efficient text classification and representation learning.