How to create a sleep/delay in nodejs that is Blocking?

Question

I\'m currently trying to learn nodejs and a small project I\'m working is writing an API to control some networked LED lights.

The microprocessor controlling the LED

Answer 1

Just use child_process.execSync and call the system's sleep function.

//import child_process module
const child_process = require("child_process");
// Sleep for 5 seconds
child_process.execSync("sleep 5");

// Sleep for 250 microseconds
child_process.execSync("usleep 250");

// Sleep for a variable number of microseconds
var numMicroSeconds = 250;
child_process.execFileSync("usleep", [numMicroSeconds]);

I use this in a loop at the top of my main application script to make Node wait until network drives are attached before running the rest of the application.