Stryker mutation-testing plugins for Effect-TS — ignore equivalent mutants on Effect Schema declarations (brands, TaggedClass/TaggedError tags) so the score reflects behaviour, not data.

An utility script that runs Stryker mutation testing on files diff between current git working branch and default one.

Mutation testing for LLM eval suites — measure whether your evals would actually catch a regression. JS/TS port in progress; Python package available now.

A mutation testing tool for Ethereum smart contracts

Mutation testing for JavaScript/TypeScript with an embedded-in-source manifest. A faithful JS/TS port of unclebob/mutate4go.

A mutation testing tool for Ethereum smart contracts

KodeMutator mutation testing framework

JavaScript Mutation Testing. Tests your tests by mutating the code.

The api for the extendable JavaScript mutation testing framework Stryker

GateTest — 120-module QA gate with MCP. Eyes (screenshot live pages), ears (production errors), hands (verify fixes worked). Security, supply chain, AI safety, mutation testing. Iterative Claude fix loop. Replaces SonarQube + Snyk + ESLint + 10 others.

Convert Stryker mutation testing JSON reports to GitHub Actions summary markdown

Ignore the standard console statements (log|warn|debug|error) from mutation testing.

Deterministic trust for TypeScript changes in agent-built systems: mutation testing, invariants, governance, and attestable authorization.

Lightweight AST-based mutation testing for JavaScript

mutation testing framework

Schema validation for the mutation server protocol (MSP).

A mutation testing tool for Ethereum smart contracts

Core engine for Tautest, a PR-focused mutation testing workflow layer on top of StrykerJS

A plugin to use the karma test runner in Stryker, the JavaScript mutation testing framework

Contains utilities for Stryker, the mutation testing framework for JavaScript and friends