`ionic capacitor build` produces source maps

[avalanche1]

Description:

Running the ionic capacitor build command produces source maps in build/static folder. I do not specify the --source-map option. With or without the --prod option. According to the docs, source maps must only be produced when --source-map is specified. As you can see from the --verbose output, source maps are being generated by default.

Steps to Reproduce:

See Description

Output:

See attached file log.txt

My ionic info:

[WARN] Error loading @capacitor/ios package.json: Error: Cannot find module '@capacitor/ios/package'
       
       Require stack:
       - /usr/local/lib/node_modules/@ionic/cli/lib/project/index.js
       - /usr/local/lib/node_modules/@ionic/cli/lib/index.js
       - /usr/local/lib/node_modules/@ionic/cli/index.js
       - /usr/local/lib/node_modules/@ionic/cli/bin/ionic

Ionic:

   Ionic CLI       : 6.16.1 (/usr/local/lib/node_modules/@ionic/cli)
   Ionic Framework : @ionic/react 5.6.12

Capacitor:

   Capacitor CLI      : 3.1.2
   @capacitor/android : 3.1.2
   @capacitor/core    : 3.1.2
   @capacitor/ios     : not installed

Utility:

   cordova-res : not installed globally
   native-run  : 1.4.0

System:

   NodeJS : v16.1.0 (/usr/local/bin/node)
   npm    : 7.11.2
   OS     : macOS Mojave