1import tmpdir from '../../../common/tmpdir.js'; 2import { setTimeout } from 'node:timers/promises'; 3import fs from 'node:fs/promises'; 4import path from 'node:path'; 5 6await fs.writeFile(path.resolve(tmpdir.path, 'test-runner-concurrency'), 'a.mjs'); 7while (true) { 8 const file = await fs.readFile(path.resolve(tmpdir.path, 'test-runner-concurrency'), 'utf8'); 9 if (file === 'b.mjs') { 10 break; 11 } 12 await setTimeout(10); 13} 14