monitor bash processes via rxjs

rx.monitor.ps.js

// this GIST is available under the conditions of
// https://creativecommons.org/licenses/by/4.0/

const psList = require('ps-list');
const { interval, from } = require('rxjs');
const { switchMap, filter, map } = require('rxjs/operators');


interval(500)
        .pipe(  switchMap(() => psList()),
                switchMap(e => from(e)),
                filter(e => e.name === 'bash'),
        )
        .subscribe(console.log);