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QUESTION
I am working on React + WASM + FFmpeg app following this tutorial
On Chrome, I got the error Uncaught (in promise) ReferenceError: SharedArrayBuffer is not defined error.
I followed the doc reference, and it says the below, which I don't understand.
Cross-origin isolation overviewYou can make a page cross-origin isolated by serving the page with these headers:
...ANSWER
Answered 2021-Aug-02 at 05:51Let's start off by saying what serving the pages with these headers means.
If you have ever built an API with Express.js for example, you'll be familiar with this. Essentially, it means that when the user makes a GET request to see the web page, you will have to send some additional information in the form of HTTP headers.
Specifically, the first header prevents your page from loading any cross-origin resources that don't explicitly grant permission. The second one means that you can't share a browsing context group with any cross-origin documents. Both of these are used as safety measures to prevent cross-origin attacks. Even though you may not be requesting anything, you have to apply them.
Now onto your problem, I would recommend installing the Chrome extension CORS. I don't know exactly how it works, but I have used it in the past and it will be a temporary solution. I skimmed through the tutorial you're following and I didn't see a server setup (as in Express.js/Node's http for instance). If you had any of these you could pass the headers as arguments to the servers.
To check if the CORS settings are working as intended, add the following code to your app:
QUESTION
I am attempting to share a string between two sibling components within Angular, but it does not appear to be working for me.
I have two components, auth.component.ts and update.component.ts. I then have a service called shared.service.ts.
EDIT 2: I am including the entire shared.services.ts file as per the recommendation in the comments.
shared.service.ts
...ANSWER
Answered 2021-Oct-30 at 13:36Well, I checked your code and the problem may caused by lots of reasons but I think the problem is that you provided this service in multiple modules.
Make sure that you only provide this service in one module that declared both components or in the app.module.ts
My suggestion is to create a components.module.ts and declare all your components there so you can import it where ever you want.
I also recommend you to declare a public variable in the service instead of this confusing setters and getters so you can update it every where and it will update in other places.
QUESTION
I have a list of people with all their personal information (name, first name, date of birth, email, etc.).I want to send to each of these people an email with a link allowing them, once clicked, to be directly connected on our website. Without having to type a password.
I followed the Firebase procedure for passwordless authentication:
- from the back back in Python. Generate email link for connexion
- for the front in Angular Js. Completing signin in a web page
- Fireship.io tutorial
But most of the examples don't quite fit my use case.
Most of the examples:
- User comes to your website, asks for passwordless authentication, types in his email, (the email is stored in
window.location.href) - User receives an email with a link to log in, he clicks on it
- User is on your website, logged in (thanks to his email stored in
window.location.href).
My use case:
- None. I already have the email of my user, so I send him directly the link to connect.
- User receives an email with a link to log in, he clicks on it
- User is on my website, but has to type his e-mail again in the prompt (because it is obviously not stored in
window.location.href).
In my case the window.location.href variable will never be used. And I don't want my user to have to retype his email once the link is clicked. Since I already have his email, why ask him again?
So how can I skip this step? Is there any security risk in doing so?
This is my code so far:
Back:
...ANSWER
Answered 2021-Aug-09 at 11:47There's no security risk asking the user to type his/her email versus storing it in the window storage, and one could argue that it's actually more secure to do so. That said, how you can go about doing this:
- Make sure you have enabled email passwordless authentication.
- Using the admin SDK, add each email address to your auth table (though I wouldn't set
emailVerified: true- that will happen when they click the magic link and verify themselves on login. - Again using the admin SDK, generate a magic link for each user and send it to them.
- On your login page (where the magic link takes them), prompt them for their email address and then use that along with the magic link to authenticate. The sample code provided from Firebase shows you how to do this in the
if(!email){ ... }part of the code where it uses a window prompt to collect the user's email in case the user clicked the link on a separate device or the browser didn't/couldn't store the email address.
QUESTION
I'm learing flutter and I tried to recreate this from fireship.io.
I copied the code and I get this Error:
...ANSWER
Answered 2021-Aug-05 at 18:14try this way
QUESTION
Im trying to create a Google SignIn with Firestorm. But to many things have chanced since the creation of the guide and i cant find an answer :(
So the Problem is:
...ANSWER
Answered 2021-Jan-25 at 22:12In your method you can possibly return null so you to have declare the user$ Observable as possibly null or undefined as well
QUESTION
I'm trying to set up google maps in flutter following this tutorial, but I'm running into some issues. My app runs but I'm seeing a white screen without anything happening and the following error is printed to the terminal:
...ANSWER
Answered 2021-Apr-16 at 09:15You used the wrong AndroidManifest.xml. Please use the AndroidManifest.xml in the app directory, not in the debug directory. The debug Manifest is only used for flutter itself. The right one should be in this location:
QUESTION
I'm trying to set up FCM for my iOS flutter app and followed the guide by flutter and even the guide from Fireship.io
I was working with an older version of FCM before I updated the dependencies and now there are methods that are deprecated or just plainly left out. I am unsure of which methods to replace these and I was unable to find resources on what exactly changed in between versions.
Below is my code from FCM 7.0.0
Code:
...ANSWER
Answered 2021-Apr-01 at 19:24Simple Google searches yielded the following results, perhaps you can try a bit harder before posting a question next time:
onIosSettingsRegistered is deprecated
Usage of the IosNotificationSettings class is now deprecated (currently used with the now deprecated requestNotificationPermissions() method).
Instead of this class, use named arguments when calling requestPermission() and read the permissions back via NotificationSettings.
requestNotificationPermissions deprecated too
DEPRECATED: requestNotificationPermissions() has been deprecated in favor of requestPermission().
QUESTION
I'm trying to share a value between 2 components. I have a ProjectView component that renders a ProjectViewBudget component as a "child"(it is generated inside a dynamic tab component with ComponentFactoryResolver) by using a simple service. The child changes this value, the parent only subscribes to it. For now I only used it in the child, to see it working, but i get this error, why?
[ Service ]
...ANSWER
Answered 2021-Jan-28 at 14:24Did you add service to any module?
Otherwise you might want to add providedIn root to service:
QUESTION
I have followed this tutorial: https://fireship.io/lessons/basics-reactive-forms-in-angular/ In order to learn more about reactive forms. I have generated a nested form just like in the video and tried to make an formarray which is generated on button click. But nothing happenes when I click on my Button there are no errors too but my inputs do not come, I double checked several times but the video and what I have are identical could someone maybe from here look and tell me where my mistake is?
Code to generate form in typescript:
...ANSWER
Answered 2021-Jan-28 at 13:54You are pushing an empty form group into the form array. Thus, when the template is looking for the control by name, it can find the property in the group, but there is no control under that property for it to access. You may want to push this instead: {name: this.fb.control()}. Be sure to only push the actual ReactiveForm type that you want in the array. Currently, your pattern will add a form group to the form array, rather than a form control. That is a valid pattern AFAIK, but it may not be what you want.
QUESTION
I'm building an app which works like this: the user of the app is the manager of a team, he/she asks some questions to the team and collects the data in the app. Monthly, a report is generated by using this data. There is no use case/scenario where user will need to see all data at once, i.e. not filtered by month.
That being said, I thought about modelling the data this way:
...ANSWER
Answered 2021-Jan-21 at 15:13- Firestore charges for the number of documents read, and the bandwidth consumed; it does explicitly not charge for the number of documents it has to search through. If you can write a query to get exactly the documents you need from the combined collection, then the cost will be exactly the same between these two operations. More uniquely: so will the performance, as Firestore's performance depends only on the amount of data you retrieve and not on the size of the collection.
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