升级到 Cloud Functions v1.0，我破坏了一切

Question

尝试按照本页上的说明进行操作，但我不知道如何简单地获取 DocumentSnapshot 中的数据。

他们并没有真正解释更新 onCreate，只是说它与 onDelete 相同，但我无法让它工作。

 exports.mFoo = functions.firestore
    .document('foos/{key}')
    .onCreate((snap, context) => { 

      const bar = snap.data(); // <-- DOESN'T WORK
      console.log(bar); // <-- DOESN'T WORK

    return Promise;
});

我收到以下错误：

类型错误：snap.data 不是exports.mFoo.functions.firestore.document.onCreate 中的函数

我确信这非常简单，但我不太理解这些东西，而且我尝试了很多东西的组合，但没有任何效果。

Answer 1

Turns out I ran into the same problem that I have before.

Before doing any of these types of updates:

npm install firebase-functions@latest --save
npm install firebase-admin@5.11.0 --save
npm install -g firebase-tools

First I have to open my package.json file and delete any dependencies that are going to be updated.

These were what I found there:

 "dependencies": {
    "firebase-admin": "~5.8.1",
    "firebase-functions": "^0.8.1"
  },

After leaving the dependencies empty and rerunning those commands to install, these showed up:

 "dependencies": {
    "firebase-admin": "^5.11.0",
    "firebase-functions": "^1.0.1"
  },

Apparently installs and upgrades won't fix these dependencies but they will add them if they aren't there. Maybe it is possible to fix it by typing those in but I wouldn't have had a clue what version numbers to put there.

Now the (modified) code works:

 exports.mFoo = functions.firestore
    .document('foos/{key}')
    .onCreate((snap, context) => { 

      const bar = snap.data(); // now this works
      console.log(bar.baz); // <-- before I wasn't referring to anything in the snapshot

    return Promise; // I. Promised. Nothing.
});

Thanks @Todd Kerpelman for pointing me in the right direction and @Bob Snyder because the same answer from the other post worked for me here also.