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import { dirname, resolve } from 'path';
import { readdir, stat } from 'fs';
import { promisify } from 'util';
const toStats = promisify(stat);
const toRead = promisify(readdir);
export default async function (start, callback) {
let dir = resolve('.', start);
let tmp, stats = await toStats(dir);
if (!stats.isDirectory()) {
dir = dirname(dir);
}
while (true) {
tmp = await callback(dir, await toRead(dir));
if (tmp) return resolve(dir, tmp);
dir = dirname(tmp = dir);
if (tmp === dir) break;
}
}
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