Mutex
A modern lightweight lib to control the promise mutex
Usage
The version of your node.js should be greater than v12
npm i -S js-mutexImporting library
import Mutex from 'js-mutex';
async function singleExecute() {
const mutex = new Mutex();
let cur = 0;
await mutex.lock();
cur = 1;
await mutex.unlock();
}
async function singleExecuteConcurrency() {
const mutex = new Mutex();
const result: number[] = [];
async function fn(i: number) {
await mutex.acquire(async () => {
await sleep(100);
result.push(i);
});
}
const promises = [];
for (let i = 0; i < 10; i += 1) {
promises.push(fn(i));
}
await Promise.all(promises);
}