I want to publish my Svelte web app to GitHub pages and based my application on the template https://github.com/sveltejs/template. When I run npm run build, public/build/bundle.js is created but no index.html. All the tutorials I found talk about how to deploy Sapper projects, or to use external tools like Vercel and Surge, but is it possible to just build Svelte without any external tools? All I want is a static HTML page that I can copy to GitHub pages.
Edit: See the accepted answer for the general approach, however for non-root-directory-deployment, you still need to make the paths relative. I created a pull request at https://github.com/sveltejs/template/pull/239.
In svelte, index.html is a static file which will import your bundle.js and run it.
index.html is located at /public/index.html while your bundle.js is located at /public/build/bundle.js
in svelte template, index.html imports /build/bundle.js using a script tag to initialize the application.
while deploying, you just need to upload the whole /public folder and everything should be operational.
I can't load network images in flutter web from other domains with API calls. getting this error
Trying to load an image from another domain? Find answers at:
https://flutter.dev/docs/development/platform-integration/web-images
ImageCodecException: Failed to load network image.
any help?
For being able to display your images from any other Domain or from Firebase Storage on a Flutter web page you have to configure your data for CORS.
Open the GCP console, select your project and start a cloud terminal session by clicking the >_ icon button in the top navbar.
Click the open editor button (pencil icon), then create the cors.json file.
The cors.json file should look like this:
[
{
"origin": ["*"],
"method": ["GET"],
"maxAgeSeconds": 3600
}
]
I set the origin to * which means that every website can display your images. But you can also insert the domain of your website there to restrict access.
Run gsutil cors set cors.json gs://your-bucket
If you need more information: https://cloud.google.com/storage/docs/configuring-cors
There are two ways to resolve this either run your app using HTML renderer or set up the CORS configuration.
1. Using HTML renderer
Taken from the docs
CORS is a mechanism that browsers use to control how one site accesses the resources of another site. It is designed such that, by default, one web-site is not allowed to make HTTP requests to another site using XHR or fetch. This prevents scripts on another site from acting on behalf of the user and from gaining access to another site’s resources without permission
When using <img>, <picture>, or <canvas>, the browser automatically blocks access to pixels when it knows that an image is coming from another site and the CORS policy disallows access to data.
Flutter has two renderers for web, canvaskit and html
When you run/build app on the flutter web it uses renderers based on the device where its running.
HTML renderer: when the app is running in a mobile browser.
CanvasKit renderer: when the app is running in a desktop browser.
auto (default) - automatically chooses which renderer to use.
The HTML renderer can load cross-origin images without extra configuration.
so you could use these commands to run and build the app.
flutter run -d chrome --web-renderer html // to run the app
flutter build web --web-renderer html --release // to generate a production build
source: https://docs.flutter.dev/development/tools/web-renderers
2. Setup CORS Configuration
Download the Google-cloud-sdk which contains a tool called gsutil
In your flutter project create a file called cors.json and add this json file which will remove all domain restrictions.
[
{
"origin": ["*"],
"method": ["GET"],
"maxAgeSeconds": 3600
}
]
Run gcloud init (located in google-cloud-sdk/bin)
Authenticate yourself by clicking the link and choose the project in the console.
finally execute gsutil cors set cors.json gs://<your-bucket-name>.appspot.com You can find your bucket name in firebase storage.
I have documented this entire process in github gists
i solve this issue by using html renderer
flutter build web --release --web-renderer html
or
flutter run --web-renderer html
for me flutter run -d chrome --web-renderer html worked.
Simply.. in your flutter (web/index.html) add this:
If you use firebase storage just follow these steps:
Open Google Cloud Console at your project
Click on console icon in top right corner
Click Open editor
Click File->New->cors.json
Place code below
[
{
"origin": ["*"],
"method": ["GET"],
"maxAgeSeconds": 3600
}
]
Then Run in console
**
gsutil cors set cors.json gs://bucket-name
**
bucket-name is the name of the storage bucket which you can find on your firebase project above the folders in the storage section
Add this code in your web/index.html file
<script type="text/javascript">
window.flutterWebRenderer = "html";
</script>
To debug quickly, instead of flutter run -d chrome --web-renderer html running from the terminal you can also add the arguments --web-renderer html on your run config. On the menu bar, navigate through Run > Edit Configurations
If you can't update CORS settings or add proxy, prefer CanvasKit (has better performance) over HTML renderer - could display image with platform view:
import 'dart:html';
import 'package:flutter/material.dart';
import 'dart:ui' as ui;
class MyImage extends StatelessWidget {
#override
Widget build(BuildContext context) {
String imageUrl = "image_url";
// https://github.com/flutter/flutter/issues/41563
// ignore: undefined_prefixed_name
ui.platformViewRegistry.registerViewFactory(
imageUrl,
(int _) => ImageElement()..src = imageUrl,
);
return HtmlElementView(
viewType: imageUrl,
);
}
}
just add cors.json in web folder
[
{
"origin": ["*"],
"method": ["GET"],
"maxAgeSeconds": 3600
}
]
After creating cors.json and running the commands, nothing worked!
Finally what worked was adding a script into index.html inside your web folder.
<script type="text/javascript">window.flutterWebRenderer = "html";</script>
Reference Image:
it seems it solved my issue by running flutter run --web-renderer html
This official solution worked for me on Chrome only (Source). But I had to run it first every time.
flutter run -d chrome --web-renderer html
And disabling web security also worked (Source). But the browsers will show a warning banner.
But In case you are running on a different browser than Chrome (e.g. Edge) and you want to keep 'web security' enabled.
You can change the default web renderer in settings in VS Code
File ==> Preferences ==> Settings ==> Enter 'Flutter Web' in the Search Bar ==> Set the default web renderer to html
For someone who uses Slim Framework, just create a .htaccess file on that folder for storing images and put this line of code
Header set Access-Control-Allow-Origin *
There is a two way to solve this issue :
1- Just run your flutter web with flutter run -d chrome --web-renderer html
But there is one problem when you renderer your canvas view to HTML view. So your all views like images, text, etc gone blurry(bad quality). If you sacrifice the quality so go on with the first solution.
If you don't sacrifice quality so you need to add some code to your backend site I have done with node js you can use with yours.
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers",
"Origin, X-Requested-With, Content-Type, Accept"
);
next();
});
So, I chose the second solution because I don't sacrifice quality. So I provide you with my backend screenshot for better understanding hope you found your solution.
I had an issue while loading content from other domains which I don't have control over to change the cors settings from the server-side. I have found a work around for this problem.
STEP 1: go to C:\src\flutter\packages\flutter_tools\lib\src\web or navigate from your flutter root directory to flutter\packages\flutter_tools\lib\src\web.
STEP 2: open chrome.dart in your text editor.
STEP 3: add '--disable-web-security' under the like '--disable-extensions' as save the file.
STEP 4: run flutter clean in your project folder and run the app.
Hope this works for you.
I haven't tested my application in production yet. Adding this flag might also cause some security issues.
The Ultimate Solution
Use this package instead of flutter's NetworkImage.
https://pub.dev/packages/image_network
Tested on Flutter web with Canvas renderer and it works like a charm!
Verified answer is correct, Upvoted you man. Here's how I did it
I am trying to deploy next.js app on Firebase hosting. But I don't understand which files to push to the server. When I run npm run build and pushed the build folder to firebase. But gives error that No index.html file found.
Here is the image of output of build folder. I have just created a simple component for testing purposes.
Output of build command
Check this out first. This is the official example provided by the Next.js team in their GitHub repo.
The idea behind the example:
The goal is to host the Next.js app on Firebase Cloud Functions with Firebase Hosting rewrite rules so our app is served from our Firebase Hosting URL. Each individual page bundle is served in a new call to the Cloud Function which performs the initial server render.
This is based off of the work at https://github.com/geovanisouza92/serverless-firebase and https://github.com/jthegedus/firebase-functions-next-example as described here.
PS : I know posting links as answers is not the best way, but my rep power is not enough to put this as a comment.
On package.json you need to add npm scripts for building and exporting like.
"scripts": {
"dev": "next",
"build": "next build",
"start": "next start",
"export": "next export"
},
And then you can run
npm run build && npm run export
Next build will build your project for shipping and export will put your files ready for hosting on a static hosting server (like firebase hosting).
npm run export
will create an out/ directory and place all your files there ready for uploading.
Note:
If your app needs to generate dynamic pages at the runtime, you can't
deploy it as a static app.
Read more
On package.json you need to modify build scripts.
"build": "next build && next export",
and on next.config.js you need to modify
/** #type {import('next').NextConfig} */
module.exports = {
images: {
loader: "imgix",
path: "https://noop/",
},
reactStrictMode: true,
}
execute npm run build and generate folder /out
Its a little long and messy process as everyone answered above.
I have requested firebase for Next JS integration here.
https://firebase.google.com/support/troubleshooter/report/features
If we all send request, then firebase will soon include react, next js ONE CLICK DEPLOY feature.
Thus we don't need to go to GitHub & Vercel & Firebase for one project.
I had an ionic 4 beta project of --type=angular that was loading at any path without issue.
Periodically, i have been updating my packages by running an npm update and am currently at:
"#ionic/angular": "^4.0.2"
as well as updated installs for the ionic cli, and am currently at:
CLI 4.10.3
I am not sure when this app loading issue started, but i suspect it was after running the last npm update or update install of the cli.
When running ionic serve my application loads correctly, and i am able to navigate to all sub paths without any issues.
However, when:
• refreshing the browser while viewing a sub path
• attempting to enter a url with a sub path
• live reloading while viewing a sub path
the app attempts to load all js files relative to the sub path and fails to run like so:
http://localhost:8100/page/sub/path
fails to load because the app attempts to load runtime.js here:
http://localhost:8100/page/sub/path/runtime.js
my base href is currently set to ./
When i inspect the html source, the script tags are formatted as follows:
<script type="text/javascript" src="runtime.js"></script>
If i attempt to load a page directly at the root, the application loads ok without issue like so:
http://localhost:8100 loads OK
http://localhost:8100/page loads OK
So again to recap, the app only fails to load the js assets at a sub path.
Any idea where to begin troubleshooting?
For anyone running into this same problem, i have the answer.
I am not sure when or why, but my base href was set incorrectly and this was the problem.
I changed my base href from ./ to / and this solved my problem.
I've a custom control in my app. It runs as a standalone web application fine. But when I'm launching it from the Fiori Launchpad (FLP), it logs an error in the console. I've registered my control in my index.html file:
<script>
sap.ui.localResources("sap.custom");
sap.ui.localResources("sap.ui.codetools");
sap.ui.localResources("libs");
</script>
The structure of file directory is:
If I remove my custom control, then I can run my app in the launchpad. Do I need to add some settings in my manifest file? What could be the reason for this error?
The common configuration for a Fiori tile is to point to the Component file. So the index.html file is not deployed together with the app. If it's absolutely necessary to register additional module paths, do it in manifest.json instead.
{
"sap.ui5": {
"resourceRoots": {
"sap.ui.codetools": "sap/ui/codetools"
}
}
}
Documentation: Descriptor for Applications, Components, and Libraries (See resourceRoots).
The common configuration for a Fiori tile is to point to the Compopent.js file. So the index.html is not called. The FioriLaunchpad.html plays the role of the index.html and the ComponentContainer is defined there.
Try to register your custom control somewhere else within the app.
Activate the APP Node on SICF( node Name is same as App)