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mutation-testing-js

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Reveal weak JS tests with mutation testing.

Software Engineering#typescript#javascript#code-review#mutation-testing#test-quality#stryker#branch-analysis
Authoreferro
Version1.0.0
Installs0

System Documentation

What problem does it solve?

Mutation testing answers the question: "Are my tests actually catching bugs?" This skill helps you assess test effectiveness for JavaScript and TypeScript projects by introducing mutants and evaluating whether tests kill them.

Core Features & Use Cases

  • Systematic mutation analysis to identify weak tests on changed code.
  • Guidance on applying mutation operators (arithmetic, conditional, logical, etc.) to JS/TS.
  • Integration with Stryker for automated mutation testing and incremental branch analysis.
  • Practical workflow for evaluating mutants (Killed, Survived, No Coverage, etc.) and actionable improvements.

Quick Start

Install Stryker in your project and run mutation testing against your source files. For example: npx stryker run

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

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Please help me install this Skill:
Name: mutation-testing-js
Download link: https://github.com/eferro/augmentedcode-skills/archive/main.zip#mutation-testing-js

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
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