it doesn't work with warning messages, but only errors.

[lucamjj]

Is there a way I can pass this as a config param?

[royriojas]

Hi @lucamjj

This module uses the exit code of the process, so if the task you're executing can be configured to consider warnings as errors and exit with a code different than 0, then this will work.

Alternatively you can wrap the tool in a small wrapper and check if warnings were printed and then exit with non zero in that case. Something like the following:

import { exec } from 'child_process';

// exec a verify task in your package json
exec('npm run verify', (err, stdout, stderr) => {
     // check here if stdout has warnings
     if (stdout.match(/warning/) || err) { 
       process.exit(1);
       return;
     }
     process.exit(0); // all other cases
});

Then you can use that as your prepush task