Print command output and get the output in results

[gperdomor]

Hi all... Thank you for this lib :D...

I ha ve doubt, how can I run a long run command, for example docker build, print the logs on terminal but at the same time getting the complete output to be evaluated later?...

Case 1:
const result = await exec('docker', ['buildx', 'build', '....'])
This works fine and I get the stderr, stdout, and exitCode inside result variable, and I can do a console log to print the output using console.log, but because the command takes a while, it's a bad experience because the user can't see the progress while the command runs...

Case 2:
const res = await exec('docker', ['buildx', 'build', '....'], {nodeOptions: { stdio: 'inherit' }})
With stdio: 'inherit' I can see the progress in realtime but stderr and stdout are always empty strings in the result variable, so cannot be used for extra analysis of the output...

I want to print the progress in realtime but also get the complete output in the result variable... How can I do that?

[43081j]

you could possibly just loop over the output:

const proc = exec('docker', ['buildx', ...]);

for await (const line of proc) {
  // `line` is a line of output
}