@esutils/async-semaphore

A minimal async semaphore library that implemented in typescript

This async semaphore library can be used by es module, commonjs module and typescript module

Examples

Usage in typescript module, file with .ts extension

import { AsyncSemaphore } from '@esutils/async-semaphore';

const semaphore = new AsyncSemaphore(1);
const steps: string[] = [];

async function operation1() {
  steps.push('operation1.1');
  await semaphore.acquire();
  steps.push('operation1.2');
  await semaphore.release();
}

async function operation2() {
  steps.push('operation2.1');
  await semaphore.acquire();
  steps.push('operation2.2');
  await semaphore.release();
}

async function demo() {
  await Promise.all([operation1(), operation2()]);
  console.log(steps);
}
demo();