Typescript function to get address components from a google place result. Some aliases thrown in for help

getFromGPlace.ts

class Utils {

  placeAddressComponents = {
    street_number: {
      selector: 'street_number',
      defaultName: 'long_name',
    },
    route: {
      selector: 'route',
      defaultName: 'short_name',
    },
    neighborhood: {
      selector: 'neighborhood',
      defaultName: 'long_name',
    },
    locality: {
      selector: 'locality',
      defaultName: 'long_name',
    },
    administrative_area_level_1: {
      selector: 'administrative_area_level_1',
      defaultName: 'short_name',
    },
    administrative_area_level_2: {
      selector: 'administrative_area_level_2',
      defaultName: 'long_name',
    },
    country: {
      selector: 'country',
      defaultName: 'short_name',
    },
    city: {
      selector: 'locality',
      defaultName: 'long_name',
    },
    postal_code: {
      selector: 'postal_code',
      defaultName: 'short_name',
    },
    zip: {
      selector: 'postal_code',
      defaultName: 'short_name',
    },
    street: {
      selector: 'route',
      defaultName: 'short_name',
    },
    county: {
      selector: 'administrative_area_level_2',
      defaultName: 'long_name',
    },
    state: {
      selector: 'administrative_area_level_1',
      defaultName: 'short_name',
    },
    nation: {
      selector: 'country',
      defaultName: 'long_name',
    },
  };
  
  constructor () { }

  /** Gets an address component from a google place result */
  public getFromGPlace(item: string, place: google.maps.places.PlaceResult, nameType?: string): string | null {
    if (item === 'streetAddress' || item === 'street_address') {
      return this.getFromGPlace('street_number', place) + ' ' + this.getFromGPlace('route', place);
    }
    let type = this.placeAddressComponents[item];
    if (!type) throw new Error('Not a valid address component: ' + item);
    if (nameType) {
      type.defaultName = nameType;
    }
    for (let comp of place.address_components) {
      if (comp.types.indexOf(type.selector) >= 0) {
        return comp[type.defaultName];
      }
    }
    return null;
  }
}