[node:test] help using node api for node:test's run method with coverage report

[danehansen]

Node.js Version

v22.2.0

NPM Version

v10.7.0

Operating System

macOS 14.5

Subsystem

Other

Description

im looking for more help in using the run method from node:test than what the online documentation shows. for example, how can i enable coverage reporting? what would be the way to do the equivalent of --experimental-test-coverage when using the run method? thanks.

Minimal Reproduction

import _process from "node:process";
import { run } from "node:test";
import { tap } from "node:test/reporters";

import { glob } from "glob";

async function testSrc(watch: boolean): Promise {
const files = await glob(
["/*.test.ts", "/.test.tsx", "**/.test.js", "/*.test.jsx"],
{ ignore: ["node_modules/", "build/**"] },
);

await run({
files,
watch,
})
.on("test:coverage", (data:any) => {
// this never fires
console.log("test:coverage", { data });
})
.compose(tap)
.pipe(_process.stdout);
}

export default testSrc;

Output

No response

Before You Submit

• I have looked for issues that already exist before submitting this
• My issue follows the guidelines in the README file, and follows the 'How to ask a good question' guide at https://stackoverflow.com/help/how-to-ask

[RedYetiDev]

Coverage is currently not supported via the run API, but it's planned for the future.

nodejs/node#53924 has it listed in a roadmap, but if you'd like, you can open a feature request for it in the nodejs/node repository.

[RedYetiDev]

(Will be) fixed by #53937