App Size too heavy

Appflow
1

Hello everyone,

after having optimized my images and my assets folder (40mb now), my application still seems too heavy ( < 400 mb)
and i don’t understand why, is it the node_modules folder?
this my ionic info :


Ionic:

   ionic (Ionic CLI)  : 4.9.0 (/usr/local/lib/node_modules/ionic)
   Ionic Framework    : ionic-angular 3.9.2
   @ionic/app-scripts : 3.2.2

Cordova:

   cordova (Cordova CLI) : 8.0.0
   Cordova Platforms     : ios 4.5.5
   Cordova Plugins       : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 3.1.2, (and 24 other plugins)

System:

   ios-deploy : 1.9.2
   NodeJS     : v8.11.2 (/usr/local/bin/node)
   npm        : 6.7.0
   OS         : macOS High Sierra
   Xcode      : Xcode 10.1 Build version 10B61

i tried to make a ionic cordova build --prod but i got this error for somes pages ( i dont use lazy loading)

typescript error 
            Type ...
            is part of the declarations of 2 modules: AppModule in 
            ... and ComponentsModule in 
            /Users/.../components.module.ts!

thx a lot