与 async/await 一起使用

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\Usage with async/await

如果在异步函数中,只有一个 await 调用在上下文中运行,则应使用以下模式:

\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
 });
}

本例中 store 只在回调函数和 foo 调用的函数中可用。在 run 之外,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.