Thanks to all.
I agree, Visual Studio Code have to be closed, it try to update typescript analysis meanwhile npm is installing.
But was not the case. And I’m sure Node_modules has been deleted (with Total Commander).
I had to uninstall an reinstall Ionic and Cordova, then npm install had run correctly.
This in situation now (ionic info):
@ionic/cli-utils : 1.4.0
Cordova CLI : 7.0.1
Ionic CLI : 3.4.0
@ionic/app-scripts : 1.3.8
@ionic/cli-plugin-cordova : 1.4.0
@ionic/cli-plugin-ionic-angular : 1.3.1
Cordova Platforms : android 6.2.3
Ionic Framework : ionic-angular 3.4.2
Node : v6.11.0
OS : Windows 10
Xcode : not installed
ios-deploy : not installed
ios-sim : not installed
npm : 5.0.4
Why 3.4.2? Latest is 3.5 or not?? So I did again:
npm install email@example.com --save --save-exact
npm install @ionic/app-scripts@latest --save-dev
Ionic framework now is:
Ionic Framework : ionic-angular 3.5.0
@ionic/app-scripts : 1.3.12
I expected 1.3.9 !! However Ionic serve OK.
About build or running on Emulator/Devices I’m still facing the problem:
Error: Could not find an installed version of Gradle either in Android Studio,
or on your system to install the gradle wrapper. Please include gradle
in your path, or install Android Studio
I had immediately after upgrade to 3.4, but there are a lot of threads about it (none resolve…)