Simple async semaphore

Usage no npm install needed!

<script type="module">
  import seangenabeSemaphore from 'https://cdn.skypack.dev/@seangenabe/semaphore';



Simple async semaphore

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import { Semaphore } from "@seangenabe/semaphore"

const semaphore = new Semaphore(64)

;(async () => {
  const release = await semaphore.wait()
  // ...

const semaphore = new Semaphore(initialSize)


  • initialSize - the maximum number of claims allowed. Must be a positive integer or Infinity.

Creates a new semaphore with the specified size.

semaphore.wait(): Promise<() => void>

Returns: Promise<() => void>

Waits for other claims on this semaphore, then resolves with a function that can be called to release the claim on this semaphore.

semaphore.size: number

Read-only access to the remaining number of claims that can be taken.