const util = require('util');
const exec = util.promisify(require('child_process').exec);

async function processChild() {
    try {
            const { stdout, stderr } = await exec('ls');
            if(stdout){
              console.log('stdout: ', stdout);
            } 

            if(stderr){
              console.log('stderr:', stderr);
            }            
    } catch (e) {
        console.error(e);
    }
};

processChild();