Chaining Promise using async/await 2
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const state = {
isCoffeeMakerReady: true,
seedStocks: {
arabica: 250,
robusta: 60,
liberica: 80
}
}
const getSeeds = (type, miligrams) => {
return new Promise((resolve, reject) => {
if(state.seedStocks[type] >= miligrams) {
state.seedStocks[type] -= miligrams;
resolve("Biji kopi didapatkan!")
} else {
reject("Maaf stock kopi habis!")
}
});
}
const makeCoffee = seeds => {
return new Promise((resolve, reject) => {
if(state.isCoffeeMakerReady) {
resolve("Kopi berhasil dibuat!")
} else {
reject("Maaf mesin tidak dapat digunakan!");
}
})
}
const servingToTable = coffee => {
return new Promise(resolve => {
resolve("Pesanan kopi sudah selesai!")
})
}
async function reserveACoffee(type, miligrams) {
try {
const seeds = await getSeeds(type, miligrams);
const coffee = await makeCoffee(seeds);
const result = await servingToTable(coffee);
console.log(result);
} catch(rejectionReason) {
console.log(rejectionReason);
}
}
/* Silakan ubah tipe kopi dan kuantitasnya, untuk mendapatkan promise rejection*/
reserveACoffee("arabica", 300);
reserveACoffee("liberica", 80);
JavaScript
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