How promise.all rejection works

promise.all.js

const resolvable200 = () => new Promise((resolve, reject) => {
  console.log('resolvable200 begin')
  resolve(200)
  console.log('resolvable200 end')
})

const rejectable400 = () => new Promise((resolve, reject) => {
  console.log('rejectable400 begin')
  reject(400)
  console.log('rejectable400 end')
})

const rejectable500 = () => new Promise((resolve, reject) => {
  console.log('rejectable500 begin')
  reject(500)
  console.log('rejectable500 end')
})

Promise.all([resolvable200(), rejectable400(), rejectable500()])
  .then((data) => {
    console.log('then')
    console.log('data', data)
  })
  .catch((error) => {
    console.log('catch')
    console.log('error', error)
  })

/*
Only the first error get's on `catch`, but every promise is executed till it's end.

Logs:

➤ node promise.all.js                                              10:34:01
resolvable200 begin
resolvable200 end
rejectable400 begin
rejectable400 end
rejectable500 begin
rejectable500 end
catch
error 400
*/