0.0.5 • Published 5 years ago

async-singleton v0.0.5

Weekly downloads
155
License
MIT
Repository
github
Last release
5 years ago

async-singleton

make async/promise function execute only one at a time.

CircleCI

Usage

singleton

const asyncSingleton = require('async-singleton')

const delay = msec => new Promise(resolve => setTimeout(resolve, msec))

async function countUp (n = 0) {
  for (let i = 0; i < 5; i++) {
    console.log(n + i)
    await delay(100)
  }
}
const singleCountUp = asyncSingleton(countUp)

singleCountUp(0) // run
singleCountUp(10) // skip this
await singleCountUp(20) // skip this, but wait for "singleCountUp(0)" to finish

singleCountUp(30) // run this

result

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trailing

When the function being executed is finished, it is executed only once at the last.

const singleCountUp = asyncSingleton(countUp, {trailing: true})

singleCountUp(0) // run
singleCountUp(10) // skip
singleCountUp(20) // skip
singleCountUp(30) // run, but wait for "sinleCountUp(0)" to finish

result

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0.0.5

5 years ago

0.0.4

6 years ago

0.0.3

6 years ago

0.0.2

6 years ago

0.0.1

6 years ago