await-lock:互斥锁用于异步功能

等候锁 互斥锁用于异步功能 用法 import AwaitLock from 'await-lock' ; let lock = new AwaitLock ( ) ; async function runSerialTaskAsync ( ) { await lock . acquireAsync ( ) ; try { // IMPORTANT: Do not return a promise from here because the finally clause // may run before the promise settles, and the catch clause will not run if // the promise is rejected } finally { lock . release ( ) ; }