Runs a script file in a real browser: bundles it with esbuild, serves it from a localhost origin, evaluates it as a module in the page, and streams its console output to this terminal. Resolves once the script's top level — including any top-level await — settles.

The browser is the whole point. Running the file in Node would be node, which qunitx adds nothing to; running it in Chrome gives it a DOM, fetch against a real origin, and the same TypeScript/JSX bundling the test runner uses.

import * as Script from './run.ts';

import type { ScriptConfig } from './run.ts';

// Defined, not invoked: launches a real browser and binds a real port.
async function seed() {
  const outcome = await Script.run('seed.ts', { browser: 'firefox' });
  return outcome.exitCode; // 0, or whatever the script assigned to globalThis.exitCode
}