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@reactsg/googlemaps

v24.7.10

Published

React.js Google Maps

Downloads

292

Readme

@reactsg/googlemaps

logo

npm package npm downloads npm bundle size Join the community on Spectrum DeepScan grade

@reactsg/googlemaps

This library requires React v16.6 or later. To use the latest features (including hooks) requires React v16.8+. If you need support for earlier versions of React, you should check out react-google-maps

This is complete re-write of the (sadly unmaintained) react-google-maps library. We thank tomchentw for his great work that made possible.

@reactsg/googlemaps provides very simple bindings to the google maps api and lets you use it in your app as React components.

Here are the main additions to react-google-maps that were the motivation behind this re-write

Install @reactsg/googlemaps

with NPM

$ npm i @reactsg/googlemaps
<!-- or -->
$ yarn add @reactsg/googlemaps
import React from 'react';
import { GoogleMap, useJsApiLoader } from '@reactsg/googlemaps';

const containerStyle = {
  width: '400px',
  height: '400px',
};

const center = {
  lat: -3.745,
  lng: -38.523,
};

function MyComponent() {
  const { isLoaded } = useJsApiLoader({
    id: 'google-map-script',
    googleMapsApiKey: 'YOUR_API_KEY',
  });

  const [map, setMap] = React.useState(null);

  const onLoad = React.useCallback(function callback(map) {
    // This is just an example of getting and using the map instance!!! don't just blindly copy!
    const bounds = new window.google.maps.LatLngBounds(center);
    map.fitBounds(bounds);

    setMap(map);
  }, []);

  const onUnmount = React.useCallback(function callback(map) {
    setMap(null);
  }, []);

  return isLoaded ? (
    <GoogleMap
      mapContainerStyle={containerStyle}
      center={center}
      zoom={10}
      onLoad={onLoad}
      onUnmount={onUnmount}
    >
      {/* Child components, such as markers, info windows, etc. */}
      <></>
    </GoogleMap>
  ) : (
    <></>
  );
}

export default React.memo(MyComponent);

Migration from [email protected]

if you need an access to map object, instead of ref prop, you need to use onLoad callback on <GoogleMap /> component.

Before:

// before - don't do this!
<GoogleMap
  ref={map => {
    const bounds = new window.google.maps.LatLngBounds();

    map.fitBounds(bounds);
  }}
/>

After:

<GoogleMap
  onLoad={map => {
    const bounds = new window.google.maps.LatLngBounds();
    map.fitBounds(bounds);
  }}
  onUnmount={map => {
    // do your stuff before map is unmounted
  }}
/>

If you want to use window.google object, you need to extract GoogleMap in separate module, so it is lazy executed then google-maps-api script is loaded and executed by <LoadScript />. If you try to use window.google before it is loaded it will be undefined and you'll get a TypeError.

Main features

  • Simplified API
  • Uses the new Context API
  • Supports async React (StrictMode compliant)
  • Removes lodash dependency => smaller bundle size 12.4kb gzip, tree-shakeable https://bundlephobia.com/result?p=@reactsg/googlemaps
  • forbids loading of Roboto fonts, if you set property preventGoogleFonts on <LoadScript preventGoogleFonts /> component

Examples

Updating soon:

Advice

Using the examples requires you to generate a google maps api key. For instructions on how to do that please see the following guide