I solved the problem!
you need to logout `firebase logout` then log-in `firebase login` again or just refresh the token with `firebase login --reauth`

it seems that the expiry time of Firebase auth token is limited to max 1Hr



Use `firebase login --reauth`, that happened to me because an old `FIREBASE_TOKEN` was present while trying to exec `firebase init`

I solved it by manually deleting the `FIREBASE_TOKEN` from my environment variables, **THEN** issued a `firebase login --reauth`.

Note: I tried to re-authenticate without deleting the Firebase token first, but didn&#39;t work for me.

Had the same issue but with firebase hosting. For some reason only using sudo firebase &lt;command&gt; I managed to make it work

How these two data amounts, that are located at the bottom of Network Tab differ?

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/U6HcS.png

What is the difference between &quot;transferred&quot; and &quot;resources&quot; in Chrome DevTools Network tab?

I have an angular 5 component that needs to open a link in new tab, I tried the following:

    &lt;a href=&quot;www.example.com&quot; target=&quot;_blank&quot;&gt;page link&lt;/a&gt;
when I open the link, the application gets slow and opens a route like:

    localhost:4200/www.example.com

My question is:
What is the correct way to do this in angular?

How to open a link in new tab using angular?

I`m trying to set up firebase functions, but I get an error after running firebase init.

Error: HTTP Error: 401, Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/7CYWO.jpg

HTTP Error: 401 while setting up firebase cloud functions for android project

I`m trying to set up firebase functions, but I get an error after running firebase init.
Error: HTTP Error: 401, Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See <a href="https://developers.google.com/identity/sign-in/web/devconsole-project" target="_blank" rel="noopener noreferrer">https://developers.google.com/identity/sign-in/web/devconsole-project</a>.
<a href="https://i.stack.imgur.com/7CYWO.jpg" target="_blank" rel="noopener noreferrer"><img src="https://i.stack.imgur.com/7CYWO.jpg" alt="enter image description here"></a>

I&#39;m currently using `Math.floor(Date.now() / 1000)` to get the correct timestamp format to add into a document in Firebase, however, the timestamp gets inserted as a number, and not as a timestamp.

[![number][1]][1]

I would like to have it inserted as shown below (as a timestamp, not as a number).

[![enter image description here][2]][2]

Is this possible?

  [1]: https://i.stack.imgur.com/pE1ph.png
  [2]: https://i.stack.imgur.com/0JeaX.png

Convert date to timestamp for storing into firebase firestore in javascript

*Edit: This Question is outdated, and I am sure, new documentation and more recent answers are available as of now.*


I want to retrieve data of only a **single document** via its ID. My approach with example data of:

    TESTID1 {
         &#39;name&#39;: &#39;example&#39;, 
         &#39;data&#39;: &#39;sample data&#39;,
    }

was something like this:

    Firestore.instance.document(&#39;TESTID1&#39;).get() =&gt; then(function(document) {
        print(document(&#39;name&#39;));
    }

but that does not seem to be correct syntax.

I was not able to find *any detailed documentation on querying firestore* within flutter (dart) since the firebase documentation only addresses Native WEB, iOS, Android etc. but not Flutter. The documentation of cloud_firestore is also way too short. There is only one example that shows how to query multiple documents into a stream which is not what i want to do.

Related issue on missing documentation:
https://github.com/flutter/flutter/issues/14324

It can&#39;t be that hard to get data from a single document.

UPDATE:

    Firestore.instance.collection(&#39;COLLECTION&#39;).document(&#39;ID&#39;)
    .get().then((DocumentSnapshot) =&gt;
          print(DocumentSnapshot.data[&#39;key&#39;].toString());
    );

is not executed.



Query a single document from Firestore in Flutter (cloud_firestore Plugin)

today I was trying to update com.google.gms:google-services to 4.2.0 from 4.1.0 as it&#39;s the latest version and [recommended][1] by firebase. But I get this error:

    Could not find com.google.gms:google-services:4.2.0.
    Searched in the following locations:
        https://jcenter.bintray.com/com/google/gms/google-services/4.2.0/google-services-4.2.0.pom
        https://jcenter.bintray.com/com/google/gms/google-services/4.2.0/google-services-4.2.0.jar
        https://dl.google.com/dl/android/maven2/com/google/gms/google-services/4.2.0/google-services-4.2.0.pom
        https://dl.google.com/dl/android/maven2/com/google/gms/google-services/4.2.0/google-services-4.2.0.jar
        https://maven.fabric.io/public/com/google/gms/google-services/4.2.0/google-services-4.2.0.pom
        https://maven.fabric.io/public/com/google/gms/google-services/4.2.0/google-services-4.2.0.jar
    Required by:
        project :
And here is my project&#39;s build gradle:

    // Top-level build file where you can add configuration options common to all sub-projects/modules.
    buildscript {
        repositories {
            jcenter()
            google()
            maven {
                url &#39;https://maven.fabric.io/public&#39;
            }
        }
        dependencies {
            classpath &#39;com.android.tools.build:gradle:3.2.1&#39;
            classpath &#39;com.google.gms:google-services:4.2.0&#39;

            classpath &#39;com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.4&#39;
            classpath &#39;com.github.dcendents:android-maven-gradle-plugin:2.1&#39;
            // These docs use an open ended version so that our plugin
            // can be updated quickly in response to Android tooling updates

            // We recommend changing it to the latest version from our changelog:
            // https://docs.fabric.io/android/changelog.html#fabric-gradle-plugin
            classpath &#39;io.fabric.tools:gradle:1.27.0&#39;
        }
    }

    allprojects {
        repositories {
            jcenter()
            maven {
                url &#39;https://maven.google.com/&#39;
            }
            google()
        }
    }
**UPDATE:**

As Doug Stevenson said the dependency is now up and running so just use google() in your repositories.

If you have any problems with other google repositories (firebase, exoplayer) you can track the issue progress [here][2].


  [1]: https://firebase.google.com/docs/android/setup?authuser=0
  [2]: https://issuetracker.google.com/issues/120759347#comment30

Error: could not find com.google.gms:google-services:4.2.0

The dialog (Google form) for the credentials is opened successfully, but after I fill my credentials I&#39;m getting this error. I followed the instructions from [here][1]. Created a Firebase project, enabled the Google Drive API (that&#39;s what I need for now) from the Google APIs Console.

The code throwing the exception:

    final GoogleSignIn _googleSignIn = GoogleSignIn(
      scopes: [
        &#39;https://www.googleapis.com/auth/drive&#39;,
      ],
    );

    await _googleSignIn.signIn();

That&#39;s the stack trace:

    E/flutter ( 5068): [ERROR:flutter/shell/common/shell.cc(184)] Dart Error: Unhandled exception:
    E/flutter ( 5068): PlatformException(sign_in_failed, com.google.android.gms.common.api.ApiException: 10: , null)
    E/flutter ( 5068): #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:551:7)
    E/flutter ( 5068): #1      MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:292:18)
    E/flutter ( 5068): &lt;asynchronous suspension&gt;
    E/flutter ( 5068): #2      GoogleSignIn._callMethod (package:google_sign_in/google_sign_in.dart:226:58)
    E/flutter ( 5068): &lt;asynchronous suspension&gt;
    E/flutter ( 5068): #3      GoogleSignIn._addMethodCall (package:google_sign_in/google_sign_in.dart:268:20)
    E/flutter ( 5068): #4      GoogleSignIn.signIn (package:google_sign_in/google_sign_in.dart:339:48)
    E/flutter ( 5068): #5      ThatsMyComponentState.theSignInFuction.&lt;anonymous closure&gt; (package:my_app/widgets/my_file.dart:666:45)
    E/flutter ( 5068): &lt;asynchronous suspension&gt;
    E/flutter ( 5068): #6      _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:507:14)
    E/flutter ( 5068): #7      _InkResponseState.build.&lt;anonymous closure&gt; (package:flutter/src/material/ink_well.dart:562:30)
    E/flutter ( 5068): #8      GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:102:24)
    E/flutter ( 5068): #9      TapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:242:9)
    E/flutter ( 5068): #10     TapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:204:7)
    E/flutter ( 5068): #11     GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
    E/flutter ( 5068): #12     _WidgetsFlutterBinding&amp;BindingBase&amp;GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:184:20)
    E/flutter ( 5068): #13     _WidgetsFlutterBinding&amp;BindingBase&amp;GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:158:22)
    E/flutter ( 5068): #14     _WidgetsFlutterBinding&amp;BindingBase&amp;GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:138:7)
    E/flutter ( 5068): #15     _WidgetsFlutterBinding&amp;BindingBase&amp;GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:101:7)
    E/flutter ( 5068): #16     _WidgetsFlutterBinding&amp;BindingBase&amp;GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:85:7)
    E/flutter ( 5068): #17     _invoke1 (dart:ui/hooks.dart:168:13)
    E/flutter ( 5068): #18     _dispatchPointerDataPacket (dart:ui/hooks.dart:122:5)

The version of the [google_sign_in][1] plugin is 4.0.0.

That&#39;s the output of **flutter doctot -v**:

    [√] Flutter (Channel stable, v1.0.0, on Microsoft Windows [Version 10.0.17763.253], locale en-US)
    • Flutter version 1.0.0 at C:\src\flutter-0.7.3\flutter
    • Framework revision 5391447fae (10 weeks ago), 2018-11-29 19:41:26 -0800
    • Engine revision 7375a0f414
    • Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)

    [√] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    • Android SDK at C:\Users\myuser\AppData\Local\Android\Sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • ANDROID_HOME = C:\Users\myuser\AppData\Local\Android\Sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)
    • All Android licenses accepted.

    [√] Android Studio (version 3.3)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 32.0.1
    • Dart plugin version 182.5124
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)

    [!] IntelliJ IDEA Community Edition (version 2018.1)
    • IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2018.1.6
    X Flutter plugin not installed; this adds Flutter specific functionality.
    X Dart plugin not installed; this adds Dart specific functionality.
    • For information about installing plugins, see
      https://flutter.io/intellij-setup/#installing-the-plugins

    [!] VS Code, 64-bit edition (version 1.30.2)
    • VS Code at C:\Program Files\Microsoft VS Code
    • Flutter extension not installed; install from
      https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

    [√] Connected device (1 available)
    • Android SDK built for x86 • emulator-5554 • android-x86 • Android 8.1.0 (API 27) (emulator)

    ! Doctor found issues in 2 categories.

Any help will be much appreciated. Thanks!


  [1]: https://pub.dartlang.org/packages/google_sign_in

Flutter and google_sign_in plugin: PlatformException(sign_in_failed, com.google.android.gms.common.api.ApiException: 10: , null)

I&#39;m trying to rebuild a web app example that uses Firebase Cloud Functions and Firestore. When deploying a function I get the following error: 

    src/index.ts:45:18 - error TS2532: Object is possibly &#39;undefined&#39;.
    45     const data = change.after.data();
This is the function:

    export const archiveChat = functions.firestore
      .document(&quot;chats/{chatId}&quot;)
      .onUpdate(change =&gt; {
        const data = change.after.data();

        const maxLen = 100;
        const msgLen = data.messages.length;
        const charLen = JSON.stringify(data).length;

        const batch = db.batch();

        if (charLen &gt;= 10000 || msgLen &gt;= maxLen) {

          // Always delete at least 1 message
          const deleteCount = msgLen - maxLen &lt;= 0 ? 1 : msgLen - maxLen
          data.messages.splice(0, deleteCount);

          const ref = db.collection(&quot;chats&quot;).doc(change.after.id);

          batch.set(ref, data, { merge: true });

          return batch.commit();
        } else {
          return null;
        }
      });
I&#39;m just trying to deploy the function to test it. And already searched the web for similar problems, but couldn&#39;t find any other posts that match my problem. 

How can I solve the error &#39;TS2532: Object is possibly &#39;undefined&#39;?

I have a stripe webhook that call a Firebase function. In this function I need to verify that this request comes from Stripe servers. Here is the code :

```typescript
const functions = require(&#39;firebase-functions&#39;);
const bodyParser = require(&#39;body-parser&#39;);
const stripe = require(&quot;stripe&quot;)(&quot;sk_test_****&quot;);
const endpointSecret = &#39;whsec_****&#39;;
const app = require(&#39;express&#39;)();

app.use(bodyParser.json({
    verify: function (req, res, buf) {
        var url = req.originalUrl;
        if (url.startsWith(&#39;/webhook&#39;)) {
            req.rawBody = buf.toString()
        }
    }
}));

app.post(&#39;/webhook/example&#39;, (req, res) =&gt; {
    let sig = req.headers[&quot;stripe-signature&quot;];

    try {
        console.log(req.bodyRaw)
        let event = stripe.webhooks.constructEvent(req.body, sig, endpointSecret);
        console.log(event);
        res.status(200).end()

        // Do something with event
    }
    catch (err) {
        console.log(err);
        res.status(400).end()
    }
});

exports.app = functions.https.onRequest(app);
```

As mentioned in [Stripe Documentation][1], I have to use raw body to perform this security check.

I have tried with my current code and with :

```typescript
app.use(require(&#39;body-parser&#39;).raw({type: &#39;*/*&#39;}));
```

But I always get this error :

    Error: No signatures found matching the expected signature for payload. Are you passing the raw request body you received from Stripe? https://github.com/stripe/stripe-node#webhook-signing

  [1]: https://stripe.com/docs/webhooks/signatures

Stripe Error: No signatures found matching the expected signature for payload

We are using GCP&#39;s Firebase with Firestore for a new mobile app we are developing. As part of this effort we need to deploy a number of cloud functions which will act as Firestore triggers for doing some back end processing. 

Our intention is to keep the deploys encapsulated inside of Firebase by using the firebase cli tools. However when we attempt to initiate the Firebase project for functions using the &quot;firebase init functions&quot; call the only two language options are &quot;Javascript&quot; and &quot;Typescript&quot;, and the only deployable stack seems to be Node.js. 

On previous GCP projects we had deployed Python based cloud functions (using the gcloud cli) and ideally we&#39;d like to continue using Python for our Firebase cloud functions.  So my questions are:
 
1. is it possible to deploy Python-based Firebase cloud functions? If not:

2. can we simply go back to deploying Python-based GCP cloud functions using the gcloud cli and still have them work as Firestore triggers?

Thanks

Firebase cloud functions using Python?

I want to be able to run cloud functions locally and debug against a copy from the production data.
Is there a way to copy the data that is online to the local firestore emulator?

How to import data from cloud firestore to the local emulator?

I am attempting to write an onCall function for Firebase Cloud Functions that performs advanced querying tasks on a firestore database (i.e. checking a text query up against AutoML natural lang to get a category, etc) but I keep running into a problem trying to query the database from the function:

```
Error getting documents ::  Error: Could not load the default credentials. Browse to https://cloud.google.com/docs/authentication/getting-started for more information.
    at GoogleAuth.getApplicationDefaultAsync (/srv/node_modules/google-auth-library/build/src/auth/googleauth.js:161:19)
    at &lt;anonymous&gt;
    at process._tickDomainCallback (internal/process/next_tick.js:229:7)
```

Function:
```
const functions = require(&#39;firebase-functions&#39;);
const admin = require(&#39;firebase-admin&#39;);
admin.initializeApp();
const db = admin.firestore();

exports.query = functions.https.onCall((data, context) =&gt; {
    const text = data.text;
    var results = [];
    const promise = db.collection(&#39;providers&#39;).get()
    promise.then((snapshot) =&gt; {
        console.log(&#39;marker&#39;);
        snapshot.forEach((doc) =&gt; {
            results.push({id: doc.id, data: doc.data()});
        });
        console.log(&#39;yessir&#39;);
        return {results: results};
    }).catch((err) =&gt; {
        console.log(&#39;Error getting documents :: &#39;, err)
        console.log(&#39;nosir&#39;);
        return {results: &quot;no results&quot;};
    });
});
```

Longer output:
```
Function execution started
Function execution took 8ms, finished with status code: 200
Error getting documents :: (etc, same error)
nosir
```

Example 2 (no change in running):
```
Function execution started
Function execution took 1200 ms, finished with status code: 200
marker
yessir
```

I can&#39;t figure out where this problem is coming from or how to resolve it.
Any help?

Regards.

Error: Could not load the default credentials (Firebase function to firestore)

When i make my first deploy function I can&#39;t deploying Because I have Error Asks me to make Upgrade to my account to Blaze I need to Know Can i deploy Function when i use free account??

Output:

    i  deploying functions
    i  functions: ensuring required API cloudfunctions.googleapis.com is enabled...
    i  functions: ensuring required API cloudbuild.googleapis.com is enabled...
    !  functions: missing required API cloudbuild.googleapis.com. Enabling now...
    +  functions: required API cloudfunctions.googleapis.com is enabled
    
    Error: Cloud Functions deployment requires the pay-as-you-go (Blaze) billing plan. To upgrade your project, visit the following URL:
    
    https://console.firebase.google.com/project/institute-for-admin/usage/details
    
    For additional information about this requirement, see Firebase FAQs:
    
    https://firebase.google.com/support/faq#functions-runtime

Content Type	Original Author	Original Content on Stackoverflow
Question	M.Ali	View Question on Stackoverflow
Solution 1 - Firebase	M.Ali	View Answer on Stackoverflow
Solution 2 - Firebase	pixshatterer	View Answer on Stackoverflow
Solution 3 - Firebase	TheFabbius	View Answer on Stackoverflow
Solution 4 - Firebase	Mikhail Mazurovskiy	View Answer on Stackoverflow

HTTP Error: 401 while setting up firebase cloud functions for android project

Firebase Problem Overview

Firebase Solutions

Solution 1 - Firebase

Solution 2 - Firebase

Solution 3 - Firebase

Solution 4 - Firebase

How to open a link in new tab using angular?

What is the difference between "transferred" and "resources" in Chrome DevTools Network tab?

Attributions