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promise-over

A promise extension for over duration, timeout, and expiration.

Install

npm i promise-over
# or using yarn 
yarn add promise-over

CDN:

<script src="https://unpkg.com/promise-over/dist/promiseOver.umd.min.js"></script>

Notice that promise-finally polyfill is required if you want to support browsers not supporting promise-finally.

Usage

Essential

// es5
var promiseOver = require('promise-over')
// es6+
import promiseOver from 'promise-over'
// tree shaking(babel is required)
import promiseOver from 'promise-over/src/promise-over'
import expire from 'promise-over/src/expire'
import over from 'promise-over/src/over'
import timeoutExpire from 'promise-over/src/timeout-expire'
import timeout from 'promise-over/src/timeout'
 
promiseOver.over(asyncMethod, 5000).then(() => {
  // this will be called after over 5 seconds
})
 
promiseOver.timeout(asyncMethod, () => {
  // This would be called if `asyncMethod` was not resolved(or rejected) yet in 5 seconds
}, 5000)
 
promiseOver.expire(asyncMethod, 5000, new Error('Expired!!!'))
// An error with message `Expired!!!` would be thrown if `asyncMethod` was not resolved(or rejected) yet in 5 seconds

Advanced

// promiseOver = over + timeout + expire
promiseOver(asyncMethod, overDelay, [timeoutFunction, timeoutDelay], [expireDelay[, thrownOnExpired]])
 
promiseOver(getPeople(), 1000)
// the same as promiseOver.over(getPeople(), 1000)
 
promiseOver(getPeople(), 1000, () => showWaitingMessage(), 1000, 5000)
 
// timeoutExpire = timeout + expire
promiseOver.timeoutExpire(asyncMethod, timeoutFunction, timeoutDelay, [expireDelay[, thrownOnExpired])
 
promiseOver.timeoutExpire(getPeople(), () => showWaitingMessage(), 1000)
// the same as promiseOver.timeout(getPeople(), () => showWaitingMessage(), 1000)
 
// example:
promiseOver.timeoutExpire(getPeople(), () => showWaitingMessage(), 1000, 5000)
  .catch(err => {
    if (promiseOver.isExpireError(err)) {
      showExpiredMessage()
    }
  )
 
// with async / await
try {
  await promiseOver(getPeople(), () => showWaitingMessage(), 1000, 5000)
} catch(err) {
  if (promiseOver.isExpireError(err)) {
    showExpiredMessage()
  }
}

Demo

Check timeline here.