I have project angular-cli
~root~/src/typings.json
{ \"globalDevDependencies\": { \"angular-protractor\": \"registry:dt/angula
In IONIC 4 I fixed it by installing @types/google-maps not @types/googlemaps
just run this
npm install @types/google-maps --save
and import google in your component using
import { google } from "google-maps";