return new Promise<void>((res, rej) => {
const suffix = serverNumber ? ` -- ${serverNumber}` : ''
- return exec('npm run clean:server:test' + suffix, err => {
- if (err) return rej(err)
+ return exec('npm run clean:server:test' + suffix, (err, _stdout, stderr) => {
+ if (err || stderr) return rej(err || new Error(stderr))
return res()
})