async/await 的使用

🌐 Usage with async/await

如果在异步函数中，只有一个 await 调用需要在某个上下文中运行，应使用以下模式：

🌐 If, within an async function, only one await call is to run within a context, the following pattern should be used:

async function fn() {
  await asyncLocalStorage.run(new Map(), () => {
    asyncLocalStorage.getStore().set('key', value);
    return foo(); // The return value of foo will be awaited
  });
} 拷贝

在这个例子中，该存储仅在回调函数以及 foo 调用的函数中可用。在 run 外部，调用 getStore 将返回 undefined。

🌐 In this example, the store is only available in the callback function and the functions called by foo. Outside of run, calling getStore will return undefined.