Async/Await 在 Google 云函数中不起作用

Question

我在Firebase上使用google云功能和云消息。然而，当我尝试使用Async/Await函数时，我有一个错误:error Parsing error: Unexpected token =>我使用Node.js v16.

下面是我的代码:

const functions = require("firebase-functions");
// const mess = require("firebase/messaging");
const admin = require("firebase-admin");
exports.sendListenerPushNotificationProductUpdate = functions.database
.ref("Products/{product}/type/")
.onUpdate(async (snapshot, context) => {
...
const tokensSnapshot = await Promise.resolve(getDeviceTokensPromise);
console.log("TOKEN: " + JSON.stringify(tokensSnapshot));
// Check if there are any device tokens.
if (!tokensSnapshot.hasChildren()) {
return functions.logger.log(
"There are no notification tokens to send to."
);
}

...
// Listing all tokens as an array.
const tokens = Object.keys(tokensSnapshot.val());
// Send notifications to all tokens.
const response = await admin.messaging().sendToDevice(tokens, payload);
// For each message check if there was an error.
const tokensToRemove = [];
return Promise.all(tokensToRemove);
});

Answer 1

getDeviceTokensPromise是否返回Promise?如果是，那一行应该是

const tokensSnapshot = await getDeviceTokensPromise()