@ttoss/google-maps

@ttoss/google-maps provides a concise, opinionated way to use Google Maps in React apps. This guide covers setup, usage, and key API features so you can get started quickly.

Installing

Install the package:

pnpm add @ttoss/google-maps

For TypeScript support:

pnpm add -D @types/google.maps

Add this to a declaration file (e.g., typings.d.ts):

/// <reference types="google.maps" />

Getting Started

Set up GoogleMapsProvider at your app root to provide the Google Maps context. This enables all child components to access the Google Maps API.

import { GoogleMapsProvider } from '@ttoss/google-maps';

const App = ({ children }) => (
  <GoogleMapsProvider apiKey={process.env.GOOGLE_MAPS_API_KEY}>
    {children}
  </GoogleMapsProvider>
);

Rendering the Map

Use the useMap hook to render a map in your component. Define height and width for the map container:

import { Box, Text } from '@ttoss/ui';
import { useMap } from '@ttoss/google-maps';
import * as React from 'react';

const height = 400;
const width = '100%';

const MyComponent = () => {
  const { ref, map } = useMap();

  React.useEffect(() => {
    if (map) {
      map.setOptions({
        center: { lat: -34.397, lng: 150.644 },
        zoom: 8,
      });
    }
  }, [map]);

  return (
    <Box>
      <Text>My Map</Text>
      <Box ref={ref} sx={{ height, width }} />
    </Box>
  );
};

Accessing the google.maps Object

Use the useGoogleMaps hook to access the google.maps object for advanced API usage:

import { useGoogleMaps } from '@ttoss/google-maps';

const MyComponent = () => {
  const { google } = useGoogleMaps();
  return <Text>{google.maps.version}</Text>;
};

Advanced Usage

Using with Next.js

If you use Next.js, pass the Next.js Script component to GoogleMapsProvider:

import { GoogleMapsProvider } from '@ttoss/google-maps';
import Script from 'next/script';

const App = ({ children }) => (
  <GoogleMapsProvider apiKey={process.env.GOOGLE_MAPS_API_KEY} Script={Script}>
    {children}
  </GoogleMapsProvider>
);

Reusing the map Object

Use MapProvider to share the map object between components:

import { MapProvider, useMap } from '@ttoss/google-maps';

const ChildComponent = () => {
  const { map } = useMap();
  React.useEffect(() => {
    if (map) {
      map.setOptions({
        center: { lat: -34.397, lng: 150.644 },
        zoom: 8,
      });
    }
  }, [map]);
  return null;
};

const ParentComponent = () => {
  const { ref, map } = useMap();
  const height = 400;
  const width = '100%';
  return (
    <MapProvider map={map} ref={ref}>
      <Box>
        <Text>My Map</Text>
        <Box ref={ref} sx={{ height, width }} />
        <ChildComponent />
      </Box>
    </MapProvider>
  );
};

Adding a Marker

To use markers, include the marker library in GoogleMapsProvider:

<GoogleMapsProvider
  apiKey={process.env.GOOGLE_MAPS_API_KEY}
  libraries={['marker']}
>
  {children}
</GoogleMapsProvider>

Add a marker using google.maps.marker.AdvancedMarkerElement:

import { useMap, useGoogleMaps } from '@ttoss/google-maps';
import React from 'react';

const height = 400;
const width = '100%';

const MyMapWithMarker = ({ location }) => {
  const { ref, map } = useMap();
  const { google } = useGoogleMaps();
  const markerRef = React.useRef(null);

  React.useEffect(() => {
    if (map) {
      map.setOptions({
        center: {
          lat: location.latitude,
          lng: location.longitude,
        },
        zoom: location.zoom || 13,
      });
    }
    if (google?.maps && map && location) {
      const marker = new google.maps.marker.AdvancedMarkerElement({
        position: {
          lat: location.latitude,
          lng: location.longitude,
        },
        map,
        title: location.name,
      });
      markerRef.current = marker;
    }
  }, [map, location, google]);

  return <div ref={ref} style={{ height, width }} />;
};

Error Handling

You can handle script loading errors using the onError prop in GoogleMapsProvider:

<GoogleMapsProvider
  apiKey={process.env.GOOGLE_MAPS_API_KEY}
  onError={(error) => {
    // Handle error
    console.error(error);
  }}
>
  {children}
</GoogleMapsProvider>

API

GoogleMapsProvider

• apiKey: string - Google Maps API key.
• libraries: string[] - Libraries to load.
• language: string - Language.
• Script: React.ComponentType - Custom Script component to use.
• onError: (error: Error) => void - Callback to handle script loading errors.

MapProvider

• map: google.maps.Map | null - Google Maps object.
• children: React.ReactNode - Children to render.
• ref: React.RefObject<HTMLDivElement> - Reference to the map container.

useMap

Returns:

• ref: React.RefObject<HTMLDivElement> - Reference to the map container.
• map: google.maps.Map | null - Google Maps object.

useGoogleMaps

Returns:

• google: typeof google - google.maps object.
• status: 'idle' | 'error' | 'loading' | 'ready' - Status of the script loading.
• isReady: boolean - Whether the script is ready (status === 'ready').

For more on product development principles that guide our approach, see Product Development Principles.