@exodus/test is a universal test runner that executes test suites written for node:test, Jest, or tape on top of Node’s native test API and a wide range of JavaScript runtimes (Node, Deno, Bun, browsers, and many embeddable engines). It lets developers run existing tests unchanged across environments, with built‑in Jest‑compatible globals, snapshot and mock support, TypeScript/Babel transpilation, coverage, and CI‑ready reporting—ideal for teams that need cross‑runtime confidence without rewriting their test code.