Test Director: Lightweight Unit Testing

test-director is an ultra-lightweight unit test director specifically designed for Node.js environments. Currently stable at version 11.0.0, the package maintains a steady release cadence with frequent updates to Node.js support and internal tooling. Its key differentiators include its minimal footprint, strict adherence to ECMAScript Modules (ESM) as its primary distribution format since v6, and its compatibility with any assertion library that throws errors (such as Node.js `assert` or `snapshot-assertion`). It leverages JSDoc for providing TypeScript type definitions, emphasizing a JavaScript-first, standards-compliant approach to testing without imposing specific assertion frameworks or runners.