error building `ionic-angular` app with `capacitor` - ionic-framework

Question

I'm trying to follow this tutorial: https://www.joshmorony.com/using-google-maps-and-geolocation-in-ionic-with-capacitor/
If I use the following steps to create the project
ionic start gmap3 blank --type=ionic-angular --no-link && cd ./gmap3
npm install #types/googlemaps --save-dev
ionic generate component GoogleMaps
npm run build # OK
# install capacitor
npm install --save #capacitor/cli #capacitor/core
# npm uninstall --save cordova-plugin-splashscreen
npx cap init gmap com.example.gmap
npm run build # ERROR after adding #capacitor/core
I get the following error AFTER I add capacitor the the project:
[11:19:12] transpile started ...
[11:19:16] typescript: node_modules/#types/node/index.d.ts, line: 194
Subsequent variable declarations must have the same type. Variable 'process' must be of type '{ env: { [key:
string]: string; }; }', but here has type 'Process'.
L193: interface RequireResolve {
L194: (id: string, options?: { paths?: string[]; }): string;
L195: paths(request: string): string[] | null;
[11:19:16] ionic-app-script task: "build"
[11:19:16] Error: Failed to transpile program
Error: Failed to transpile program
at new BuildError (/dev/ionic3/gmap3/node_modules/#ionic/app-scripts/dist/util/errors.js:16:28)
at /dev/ionic3/gmap3/node_modules/#ionic/app-scripts/dist/transpile.js:159:20
at new Promise (<anonymous>)
at transpileWorker (/dev/ionic3/gmap3/node_modules/#ionic/app-scripts/dist/transpile.js:107:12)
at Object.transpile (/dev/ionic3/gmap3/node_modules/#ionic/app-scripts/dist/transpile.js:64:12)
at /dev/ionic3/gmap3/node_modules/#ionic/app-scripts/dist/build.js:109:82
at <anonymous>
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! gmap3#0.0.1 build: `ionic-app-scripts build`
npm ERR! Exit status 1
But I can clone a github repo (modified with the same package.json) and it builds fine. see: https://github.com/mixuala/ionic3-gmaps.git
git clone https://github.com/mixuala/ionic3-gmaps.git gmap3.2
cd gmap3.2
npm install
npm run build
why is that???
Here is the package.json:
"dependencies": {
"#angular/animations": "5.2.11",
"#angular/common": "5.2.11",
"#angular/compiler": "5.2.11",
"#angular/compiler-cli": "5.2.11",
"#angular/core": "5.2.11",
"#angular/forms": "5.2.11",
"#angular/http": "5.2.11",
"#angular/platform-browser": "5.2.11",
"#angular/platform-browser-dynamic": "5.2.11",
"#capacitor/cli": "^1.0.0-beta.7",
"#capacitor/core": "^1.0.0-beta.7",
"#ionic-native/core": "~4.12.0",
"#ionic-native/splash-screen": "~4.12.0",
"#ionic-native/status-bar": "~4.12.0",
"#ionic/storage": "2.1.3",
"ionic-angular": "3.9.2",
"ionicons": "3.0.0",
"rxjs": "5.5.11",
"sw-toolbox": "3.6.0",
"zone.js": "0.8.26"
},
"devDependencies": {
"#ionic/app-scripts": "^3.2.0",
"#types/googlemaps": "^3.30.12",
"typescript": "~2.6.2"
},

Answer 1

This is a known issue in the #ionic/cli repo. Please see #3541.
It can be solved adding "types": [] to the "compilerOptions" parameter of the file tsconfig.json.