Ionic-app-scripts: [SOLVED]Error Can't resolve './app.module.ngfactory' product error TS18003 in ngc

[dbarrecoquel]

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Short description of the problem:

Running the cli : ionic cordova run android --prod

What behavior are you expecting?

Error: ./src/app/main.ts
Module not found: Error: Can't resolve './app.module.ngfactory' in 'C:\my_project_path\src\app'
resolve './app.module.ngfactory' in 'C:\my_project_path\src\app'
using description file: C:\my_project_path\package.json (relative path: ./src/app)
Field 'browser' doesn't contain a valid alias configuration
after using description file: C:\my_project_path\package.json (relative path: ./src/app)
using description file: C:\my_project_path\package.json (relative path: ./src/app/app.module.ngfactory)
no extension
Field 'browser' doesn't contain a valid alias configuration
C:\my_project_path\src\app\app.module.ngfactory doesn't exist
.ts
Field 'browser' doesn't contain a valid alias configuration
C:\my_project_path\src\app\app.module.ngfactory.ts doesn't exist
.js
Field 'browser' doesn't contain a valid alias configuration
C:\my_project_path\src\app\app.module.ngfactory.js doesn't exist
.json
Field 'browser' doesn't contain a valid alias configuration
C:\my_project_path\src\app\app.module.ngfactory.json doesn't exist
as directory
C:\my_project_path\src\app\app.module.ngfactory doesn't exist
[C:\my_project_path\src\app\app.module.ngfactory]
[C:\my_project_path\src\app\app.module.ngfactory.ts]
[C:\my_project_path\src\app\app.module.ngfactory.js]
[C:\my_project_path\src\app\app.module.ngfactory.json]
[C:\my_project_path\src\app\app.module.ngfactory]
@ ./src/app/main.ts 2:0-60
at new BuildError (C:\my_project_path\node_modules\@ionic\app-scripts\dist\util\errors.js:16:28)
at callback (C:\my_project_path\node_modules\@ionic\app-scripts\dist\webpack.js:121:28)
at emitRecords.err (C:\my_project_path\node_modules\webpack\lib\Compiler.js:269:13)
at Compiler.emitRecords (C:\my_project_path\node_modules\webpack\lib\Compiler.js:375:38)
at emitAssets.err (C:\my_project_path\node_modules\webpack\lib\Compiler.js:262:10)
at applyPluginsAsyncSeries1.err (C:\my_project_path\node_modules\webpack\lib\Compiler.js:368:12)
at next (C:\my_project_path\node_modules\tapable\lib\Tapable.js:218:11)
at Compiler.compiler.plugin (C:\my_project_path\node_modules\webpack\lib\performance\SizeLimitsPlugin.js:99:4)
at Compiler.applyPluginsAsyncSeries1 (C:\my_project_path\node_modules\tapable\lib\Tapable.js:222:13)
at Compiler.afterEmit (C:\my_project_path\node_modules\webpack\lib\Compiler.js:365:9)

Steps to reproduce:

1. run the cli command above
2. got this error
3. ngc give me : error :TS18003

Which @ionic/app-scripts version are you using?

  @ionic/app-scripts : 3.1.2,
  typescript : 2.4.2

Other information: (e.g. stacktraces, related issues, suggestions how to fix, stackoverflow links, forum links, etc)

   error :TS18003: No inputs were found in config file 'tsconfig.json'. 
  Specified 'include' paths were '["**/*"]' and 'exclude' paths were   
  '["node_modules","bower_components","jspm_packages"]'.

ionic info :
cli packages: (C:\Users\me\AppData\Roaming\npm\node_modules)

@ionic/cli-utils  : 1.19.0
ionic (Ionic CLI) : 3.19.0

global packages:

cordova (Cordova CLI) : 7.1.0

local packages:

@ionic/app-scripts : 3.1.2
Cordova Platforms  : android 6.3.0
Ionic Framework    : ionic-angular 3.9.2

System:

Node : v8.9.1
npm  : 5.5.1
OS   : Windows 10

Environment Variables:

ANDROID_HOME : "C:\sdk_path"

Dependencies :

   @angular/common: 5.0.2,
   @angular/compiler: 5.0.2,
   @angular/compiler-cli: 5.0.2,
   @angular/core: 5.0.2,
   @angular/forms: 5.0.2,
   @angular/http: 5.0.2,
   @angular/platform-browser: 5.0.2,
@angular/platform-browser-dynamic: 5.0.2,
@ionic-native/core: 4.4.0,
@ionic-native/native-storage: ^4.4.2,
@ionic-native/splash-screen: 4.4.0,
@ionic-native/sqlite: ^4.4.2,
@ionic-native/sqlite-porter: ^4.4.2,
@ionic-native/status-bar: 4.4.0,
@ionic/storage: 2.1.3,
cordova-android: 6.3.0,
cordova-plugin-device: ^1.1.4,
cordova-plugin-ionic-webview: ^1.1.16,
cordova-plugin-nativestorage: ^2.2.2,
cordova-plugin-splashscreen: ^4.0.3,
cordova-plugin-whitelist: ^1.3.1,
cordova-sqlite-storage: ^2.1.2,
ionic-angular: 3.9.2,
ionic-plugin-keyboard: ^2.2.1,
ionicons: 3.0.0,
rxjs: 5.5.2,
uk.co.workingedge.cordova.plugin.sqliteporter: ^1.0.2,
zone.js: 0.8.18

[dbarrecoquel]

problem solved, it was a missing import component in a module... but the output error is not clear.

I found the error with this step :

• back to ionic-angular 3.8.0 and @angular/common,compiler..:4.4.4.
• Tried a build : failed with a comprehensible output error
  
  
  
  • Correct it and update to 3.9.2 and that passed
  
  

[MarcioQuimbundo]

In my case, I updated @ionic/app-scripts to version 3.1.2 and works perfectly.

[MarcioQuimbundo]

or
(cmd) on windows:
C:your_app_path> npm install @ionic/[email protected]