from where cordova plugin facebook pick facebook application Id ?

Question

i just run

 ionic cordova run ios

and got this in my package.json file there is some long integral key in APP_ID in place of "someKey" . my question is from where facebook plugin pick this app id ?

  "cordova": {
       "plugins": {
         "cordova-plugin-facebook4": {
            "APP_ID": "someKey",
            "APP_NAME": "myapp"
        },
        "cordova-plugin-device": {},
        "cordova-plugin-console": {},
        "cordova-plugin-whitelist": {},
        "cordova-plugin-splashscreen": {},
        "cordova-plugin-statusbar": {},
        "ionic-plugin-keyboard": {}
    },

Answer 1

cordova plugin picked the facebook application Id and secret key from config.xml file. it already saved there