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@webext-core/fake-browser

An in-memory implementation of web extension APIs for testing. Supports all test frameworks (Vitest, Jest, etc)

v2.0.1, 26 Jul 2026MITESM onlyTypes: BundledTesting
$ npm install @webext-core/fake-browser
npmGitHubHomepage

Key numbers

As of 25 Sept 2026
Weekly downloads
434.4k
- over 12 months
Gzip bundle size
-
No Bundlephobia data
Dependencies
2
Direct, from package.json
Last release
2 months ago
v2.0.1
GitHub stars
332
40 forks
Open issues / PRs
4 / 1
Contributors
-
Commits, last 52 weeks
105

Downloads

No weekly download data in the snapshot.

434,398 downloads last week, 2,020,685 in the last month. No 52-week series has been fetched yet.

Maintenance

Releases, last 12 months
820 in total
Latest version
2.0.1, 26 Jul 20262 months ago
First published
7 Nov 2022
Last push to GitHub
8 Aug 202647 days before the snapshot
Repository archived
No
Open issues
4
Open pull requests
1
Commits, last 52 weeks
105
Dependents on npm
9

Major versions

  1. v2 first release 2.0.0, 25 Jul 2026
  2. v1 first release 1.0.0, 7 Nov 2022

Recent releases

VersionPublished
2.0.126 Jul 2026
2.0.025 Jul 2026
1.5.21 Jun 2026
1.5.128 May 2026
1.5.020 May 2026
1.4.119 May 2026
1.4.018 May 2026
1.3.416 Dec 2025
1.3.211 Dec 2024
1.3.113 Nov 2023
1.3.03 Nov 2023
1.2.220 Mar 2023
1.2.12 Mar 2023
1.2.02 Mar 2023

Compatibility

Module format
ESM onlyFrom package.json type, main and exports fields
TypeScript types
Bundled
Node.js engine range
*
Runtimes
-
Unpacked size (npm)
144 kB
Dependencies (2)
lodash.merge@wxt-dev/browser

Install

npm install @webext-core/fake-browser

CDN

  • jsDelivrhttps://cdn.jsdelivr.net/npm/@webext-core/fake-browser@2.0.1/
  • unpkghttps://unpkg.com/@webext-core/fake-browser@2.0.1/
  • esm.shhttps://esm.sh/@webext-core/fake-browser@2.0.1
Sources: npm registry, GitHub API. Data fetched 25 Sept 2026.

Indexability: Indexed.