Used in agent projects
24
0.2% of 12,697 public repos built with AI coding agents
Rank in testing
#32 of 40
by use in those projects
Downloads
3.4M
npm, last 7 days, @stryker-mutator/core
GitHub stars
3,196
last push Oct 10, 2026
How Stryker is used
Stryker is a dependency in 24 of the 12,697 public GitHub projects set up for AI coding agents that we scanned (0.2%), #32 of 40 in testing. The most used alternative there is Vitest. Projects that use it most often also use Vitest (66.7%), Husky (50.0%), Knip (45.8%).
Often used with Stryker
| Vitest | 66.7% of Stryker projects · 5.5× more than average |
|---|---|
| Husky | 50.0% of Stryker projects · 8.0× more than average |
| Knip | 45.8% of Stryker projects · 38.8× more than average |
| Playwright (JavaScript) | 45.8% of Stryker projects · 5.2× more than average |
| fast-check | 41.7% of Stryker projects · 103.7× more than average |
| Prettier | 50.0% of Stryker projects · 2.9× more than average |
| TypeScript | 87.5% of Stryker projects · 1.6× more than average |
| jsdom | 33.3% of Stryker projects · 6.2× more than average |
By coding agent
| Claude Code | 0.6% of projects set up for it |
|---|---|
| OpenAI Codex | 2.4% of projects set up for it |
| GitHub Copilot | 0.4% of projects set up for it |
| Cursor | 0.4% of projects set up for it |
| Gemini CLI | 1.1% of projects set up for it |
Share of public repos configured for each agent that list Stryker as a dependency.
Install
| Package | npm install @stryker-mutator/core |
|---|---|
| Main stacks | TypeScript / JavaScript (20), Python (2), Next.js (2) |
| Example projects | handsontable/handsontable, kovrichard/catalyst, blockscout/frontend, MarcusXavierr/cata-centavo, OriginTrail/dkg |
Alternatives to Stryker
| Tool | Used in agent projects | Downloads / wk | GitHub stars | License |
|---|---|---|---|---|
| Vitest npm Next-generation testing framework powered by Vite with native ESM. |
1,549 (12.2%) | 123M | 17.2K | MIT |
| Playwright (JavaScript) npm Cross-browser automation library for end-to-end testing. |
1,117 (8.8%) | 74.2M | 97.4K | Apache-2.0 |
| Testing Library npm Testing utilities for React encouraging testing user behavior. |
915 (7.2%) | 68.7M | 19.7K | MIT |
| Jest npm Delightful JavaScript testing framework with minimal configuration. |
702 (5.5%) | 46.3M | 45.6K | MIT |
| jsdom npm JavaScript implementation of web standards for testing DOM interactions. |
681 (5.4%) | 112M | 21.7K | MIT |
| pytest pypi Simple, powerful Python testing framework with fixtures and plugins. |
330 (2.6%) | 196M | 14.6K | — |
| Chai npm BDD/TDD assertion library for Node.js and browsers with expressive syntax. |
305 (2.4%) | 14M | 8,265 | MIT |
| Mocha npm Feature-rich JavaScript test framework for Node.js and browsers. |
281 (2.2%) | 12.6M | 22.9K | MIT |