codekingpro/portable-devtools

1const is = require('./is.js')
2const { dirname } = require('path')
3
4module.exports = async ({ cwd = process.cwd(), root } = {}) => {
5  while (true) {
6    if (await is({ cwd })) {
7      return cwd
8    }
9    const next = dirname(cwd)
10    if (cwd === root || cwd === next) {
11      return null
12    }
13    cwd = next
14  }
15}
16