Thanks for sharing but it seems to be kinda outdated since Node.js versions 8+ are implementing es2017 features already

Hey man, how are you? You may try to call Date.now() on every tick within while loop and check against your target value like so: var td = { "setTimeout" : function ( callback, ms ) { var dt = new Date (); var i = dt.getTime(); var future = i + ms; while ( Date .now() <= future) { //do nothing - blocking } return callback(); } };