gistfile1.txt

function promise1() {
	return new Promise((resolve, reject) => {
		console.log(1)
		return resolve();
	})
}

function promise2() {
	return new Promise((resolve, reject) => {
		console.log(2)
		return resolve();
	})
}


function promise3() {
	return new Promise((resolve, reject) => {
		console.log(3)
		return resolve();
	})
}


function promise4() {
	return new Promise((resolve, reject) => {
		console.log(4)
		return resolve();
	})
}


function promise5() {
	return new Promise((resolve, reject) => {
		console.log(5)
		return resolve();
	})
}

promise1()
    .then(() => promise2())
    .then(() => promise3())
    .then(() => promise4())
    .then(() => promise5())