promise-sequence.js

const actions = [
	() => Promise.resolve(0),
	() => Promise.resolve(1),
	() => Promise.resolve(2),
	() => Promise.resolve(3),
	() => Promise.reject(new Error('4')),
	() => Promise.resolve(5),
	() => Promise.reject(new Error('6')),
	() => Promise.reject(new Error('7'))
]


const process = (task) => {
	let ret = []
	return task.reduce((promised, task) => {
		return promised.then(task).then(value => {
			ret.push(value)
			return Promise.resolve(ret)
		})
	}, Promise.resolve())
}

process(actions)
	.then(() => console.log('做完了！'))
	.catch((err) => console.error(err.message, '炸掉啦'))