stryker-mutation

Overview

Per stryker-intro:

"Stryker started as a pure JavaScript mutation testing framework" and now "supports most JavaScript projects, including TypeScript, React, Angular, VueJS, Svelte, and NodeJS."

Mutation testing introduces small bugs (mutants) into the production code; if tests still pass, the test suite is too weak. A green suite with high mutation-survival rate is the bug coverage hides.

When to use