"use strict"; const Gpio = require('../onoff').Gpio; for (let i = 1; i <= 1000000; i += 1) { const led = new Gpio(17, 'out'); led.writeSync(led.readSync() ^ 1); led.unexport(); if (i % 10 === 0) { console.log(i); } } console.log('ok - ' + __filename);