异步方可以在任何时候添加到队列中，队列会按照添加的顺序依次执行。
注意：方法必须返回一个 Promise。
This is a single async task queue manager for nodejs, you can add async functions to the TaskQueue at any time. Functions will run one by one.
function f1() {
return new Promise((resolve, reject) => {
setTimeout(() => {
console.log("f1 done");
try {
a(); // error
resolve();
} catch (e) {
reject(e);
}
}, 1000);
});
}
function f2() {
return new Promise(resolve => {
setTimeout(() => {
console.log("f2 done");
resolve();
}, 700);
});
}
function f3() {
return new Promise(resolve => {
setTimeout(() => {
console.log("f3 done");
resolve();
}, 500);
});
}
const AsyncTaskQueue = require("@wolfx/async-task-queue");
const asyncTaskQueue = new AsyncTaskQueue();
asyncTaskQueue
.add(f1)
.add(f2)
.add(f3);
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