Advanced wait group for JS/TS (with types)

Installation

``shell
npm i advanced_waitgroup_js
`

Usage

$3

`typescript
import WaitGroup from 'advanced_waitgroup_js'

const wg = new WaitGroup()

wg.add(2)

const p = wg.wait()

setTimeout(() => {
wg.done()
}, 5000)

setTimeout(() => {
wg.done()
}, 3000)

await p
`

$3

`typescript
import WaitGroup from 'advanced_waitgroup_js'

const wg = new WaitGroup()

wg.add(2)

const p = wg.wait()

setTimeout(() => {
wg.ultimatum()
}, 3000)

await p
`

$3

`typescript
import WaitGroup from 'advanced_waitgroup_js'

const wg = new WaitGroup()

console.log(new Date())
wg.add(0, 20, alert('time passed for wait group'))
await wg.wait()
console.log(new Date())
``