Writing files with commas in the string - resulting file is truncated at the comma

$ ionic info

Ionic:

   ionic (Ionic CLI)             : 4.12.0 (C:\Users\dunca\AppData\Roaming\npm\node_modules\ionic)
   Ionic Framework               : @ionic/angular 4.3.1
   @angular-devkit/build-angular : 0.13.8
   @angular-devkit/schematics    : 7.3.8
   @angular/cli                  : 7.3.8
   @ionic/angular-toolkit        : 1.5.1

Capacitor:

   capacitor (Capacitor CLI) : 1.0.0-beta.22
   @capacitor/core           : 1.0.0-beta.22

Cordova:

   cordova (Cordova CLI) : 9.0.0 (cordova-lib@9.0.1)
   Cordova Platforms     : none
   Cordova Plugins       : no whitelisted plugins (1 plugins total)

System:

   NodeJS : v10.15.3 (C:\Program Files\nodejs\node.exe)
   npm    : 6.4.1
   OS     : Windows 10