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Below error shows when I tried ionic cordova build android --prod

I have done this and did many times.

I am trying to build my ionic project for production, by using the following command. ionic cordova build android --prod --release, but i always have this error : JavaScript heap out of memory, so i looked on the web and i tried the following solution : the adding of node --max_old_space_size=4096 in my ionic.cmd file, but it did not worked. As i use firebase, i tried to downgrade firebase using this command :

I'm trying to load a pdf from the assets folder in ionic or to download one. I've watched some tutorials but all of them are giving me the same error.

Ionic:

• ionic (Ionic CLI) : 4.1.2 (C:\Users\hanna\node_modules\ionic)
• Ionic Framework : ionic-angular 3.9.3
• @ionic/app-scripts : 3.2.1

Cordova:

• cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
• Cordova Platforms : android 6.4.0, browser 5.0.4
• Cordova Plugins : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 3.1.2, (and 7 other plugins)

System:

• NodeJS : v9.4.0 (C:\Program Files\nodejs\node.exe)
• npm : 5.6.0
• OS : Windows 10

The code :

I need to integrate videogular2 on my Ionic 3 app. So I have done these things:

I have a huge issue with Webview 3. One of our dev upgraded it to webview 3 without using Ionic native webview plugin and it is working fine at the moment on Ionic 3 app. According to the doc it has breaking change like so

Replace any usages of window.Ionic.normalizeURL() with window.Ionic.WebView.convertFileSrc()

But that dev didn't do that too. But camera functionality is also working fine. i.e.

imageURI = normalizeURL(imageURI) is working fine on webview 3. Can you tell me what was this behavior? What kind of issues will this app have in the future?

This is his files:

package.json

I have used this CLI:

the app works fine but to get in the home page takes like 10 sc. I believe that the problem is that i cant run ionic cordova build ios/android build --prod to minimize the code or bundels

it gives me this error

I'm working on a widget library so that a customer only has to import a single javascript file in the of their document. After that file has been loaded, the user should be able to use custom elements that were loaded from that single script loaded in the head.
The trouble is I need to use the WebComponents polyfill because not all of the clients use browsers that support Custom Elements.
My current "solution" (which isn't consistent) is that I have my own bundle which:

1. Dynamically includes the WebComponents bundle by inserting the script to load it in the .
   • I would like to use the WebComponents-Loader which would make additional calls to only get the polyfills that are needed.
2. Loads up my code which includes the custom elements.

The result should be that the customer can use any of our custom elements on their page. The problem is that when I dynamically insert the web components polyfill, it seems that the browser just keeps on going, and if the DOM is ready before the browser has finished loading/executing the web components polyfill, then the web components on the screen won't work.

Here's an example of what I'm trying to do.

I tried to work with ionic/cordova plugin here.

So I put this code in my Page: