Table of Contents What is it ? Specs await/async function a function

A promise is not - a function

const aPromise = {
  then: (onFulfilled, onRejected)=>{ onFulfilled({ name: 'toto'})},
};

Idea: https://dorp.io/posts/railway-oriented-programming/

Specs

• as text: https://promisesaplus.com/#notes
• as test :https://github.com/promises-aplus/promises-tests/blob/master/lib/tests/2.1.2.js

const x = await v
v['then'] {return v.then((r)=>{ const x = r }

hashPassword: (password) => {
  const foo = bcrypt.hash(password, NUMBER_OF_SALT_ROUNDS);
  return foo.then((value)=>{return value;});
}

hashPassword.then((..));

Same as

hashPassword: async (password) => {
  const foo = await bcrypt.hash(password, NUMBER_OF_SALT_ROUNDS);
},

Same as

hashPassword: (password) => {
  return bcrypt.hash(password, NUMBER_OF_SALT_ROUNDS);
},

const f = () => { a() };
f.foo  =  () => { b()) };

Implemented as
f = {
  _prototype : Function.prototype,
  _body: { a() },
  foo : { b() },
}

f()     => a()
f.foo() => a()

An object with an operator ()