无法将异步功能部署到Google Cloud Functions [英] Can not deploy async function to Google Cloud Functions

问题描述

我正在使用最新版本的Node v8.9.1，但是在部署以下代码时出现此错误:

I am using the newest version of Node, v8.9.1, but I get this error when deploying the code below:

Function load error: Code in file index.js can't be loaded.
Is there a syntax error in your code?
Detailed stack trace: /user_code/index.js:550
  async function deleteQueryBatch(db, query, batchSize, results) {
        ^^^^^^^^

SyntaxError: Unexpected token function

代码(需要使用虚函数来获取错误):

Code (dummy function is needed to get the error):

const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
const db = admin.firestore()

exports.some = functions.firestore.document('x/{x}').onCreate(event => {

})

function deleteCollectionAndReturnDeletedDocs(db, collectionRef, batchSize) {
    return deleteQueryBatch(db, collectionRef.limit(batchSize), batchSize, []);
  }
  async function deleteQueryBatch(db, query, batchSize, results) {
    const snapshot = await query.get();
    if (snapshot.size > 0) {
      let batch = db.batch();
      snapshot.docs.forEach(doc => {
        if (doc.exists) {
          results.push(doc.data())

        };
        batch.delete(doc.ref);
      });
      await batch.commit();
    }
    if (snapshot.size >= batchSize) {
      return deleteQueryBatch(db, query, batchSize, results);
    } else {

      return results;
    }
  }

如何部署异步功能?我在Evennode的服务器上没有收到此错误.

How can I deploy the async function? I do not get this error on a server on Evennode.

推荐答案

云函数当前运行的是Node 6 LTS ，这意味着它本身不支持异步/等待.如果要使用某种形式的异步/等待，则必须将ES7或TypeScript转换为ES6，以便它可以在Cloud Functions提供的Node容器中运行.转译器应使用Promise将async/await转换为等效代码.

Cloud Functions currently runs Node 6 LTS, which means it doesn't support async/await natively. If you want to use some form of async/await, you'll have to transpile your ES7 or TypeScript into ES6 so it can run in the Node container provided by Cloud Functions. The transpiler should convert async/await into equivalent code using promises.

团队正在研究还提供Node 8 LTS.

The team is looking into also providing Node 8 LTS.

这篇关于无法将异步功能部署到Google Cloud Functions的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！