Javascript Firebase HttpScalable仿真器在React Native中阻止未处理的承诺拒绝

我有一个Firebase函数，可以通过uid搜索用户：

export const findUserByUid = functions.https.onCall(async (data, context) => {

    const foundUser = await admin.auth().getUser(data.uid);

    if (foundUser) {
        return {user: foundUser.email};
    }

    return {user: null};
});

这些函数由以下命令提供：

npm run build&&firebase仿真器：start--only函数

在React Native中，我以以下方式初始化Firebase：

import "firebase/firestore";
import "firebase/functions";
import firebase from "firebase";

let firebaseConfig: Object = {
   ...
};

const firebaseApp = firebase.initializeApp(firebaseConfig)

const firebaseStore = firebaseApp.firestore();
const firebaseAuth = firebaseApp.auth();
const firebaseFunction = firebaseApp.functions();

if (__DEV__) {
    console.log("Initialize emulator for cloud functions");
    firebaseFunction.useEmulator('localhost', 5001);
    console.log(firebaseFunction)
}

export {firebaseStore, firebaseAuth, firebaseFunction};

调用firebase函数：

const findUser = async (): Promise<void> => {
        const findUserByUid = await firebaseFunction.httpsCallable('findUserByUid')({uid: "mock"});
        const result = findUserByUid.data;
        console.log(result)
}

我做错了什么？firebase emulator套件中也没有任何记录

更新：Firebase功能

export const findUserByUid = functions.https.onCall(async (data, context) => {
    try {
        const foundUser = await admin.auth().getUser(data.uid);
        if (foundUser) {
            return {user: foundUser.email};
        }
    } catch (error) {
        return new https.HttpsError("not-found", error);
    }
    return {user: null};
});

---

您是否为emulator设置了凭据，以便它可以与AdminSDK交互？如果直接在仿真器中调用函数会发生什么？您可以运行

firebase functions:shell

，然后直接在@ThomasKuhlmann处执行该函数，如果我直接在shell中调用该函数，则会得到响应，但也会出现以下错误：（节点：6820）未经处理的Promisejection警告：错误[ERR_HTTP_HEADERS_SENT]：无法在发送到客户端>的ServerResponse.setHeader（_http_outgoing.js:558:11）后设置头。在云函数中使用try/catch并正确记录错误时会发生什么？您可以稍后使用httpsErrors返回一个更有意义的响应@ThomasKuhlmann Yes然后我从shell中没有得到错误，但是通过调用firebaseFunction.httpscalable上的函数仍然没有成功

export const findUserByUid = functions.https.onCall(async (data, context) => {
    try {
        const foundUser = await admin.auth().getUser(data.uid);
        if (foundUser) {
            return {user: foundUser.email};
        }
    } catch (error) {
        return new https.HttpsError("not-found", error);
    }
    return {user: null};
});