singleflight

   

> singleflight for js

Install

``sh
$ yarn add @zcong/singleflight


or npm


$ npm i @zcong/singleflight --save
`

Example

`ts
import { Singleflight } from '../src'

const sf = new Singleflight()

const delay = (n: number) => new Promise((resolve) => setTimeout(resolve, n))

const fn = async () => {
console.log('fn called')
await delay(1000)
return 'fn result'
}

const errFn = async () => {
console.log('err fn called')
await delay(2000)
throw new Error('panic')
}

Array(10)
.fill(null)
.forEach(() => {
sf.do('test', fn).then(console.log).catch(console.log)

sf.do('test-err', errFn)
.then(console.log)
.catch((err) => console.log(err: ${err.message}))
})
``

License

MIT © zcong1993