const executorFunction = (resolve, reject) => { const isEnginesReady = true; if(isEnginesReady) { resolve("Mesin Dinyalakan"); } else { reject("Mesin Stop") } } const handlerSuccess = engine => { console.log(engine); } const handlerRejected = engineStop => { console.log(engineStop); } const startEngines = new Promise(executorFunction); startEngines.then(handlerSuccess, handlerRejected);