Promise with callback in each step.
npm i tvrcgo/promise
promise()then()catch()
promise(function(done, reject){
console.log('init');
done(3);
}).then(function(result, done, reject){
console.log('next 1', result); // result=3
done(2);
}).then(function(result, done, reject){
console.log('next 2', result); // result=2
}).catch(function(err){
console.error(err);
})MIT