# @react-google-maps/api
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@react-google-maps/api
> 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](https://github.com/tomchentw/react-google-maps)
This is complete re-write of the (sadly unmaintained) `react-google-maps` library. We thank [tomchentw](https://github.com/tomchentw/) for his great work that made possible.
@react-google-maps/api 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 @react-google-maps/api
with NPM
```#!/bin/bash
npm i -S @react-google-maps/api
```
or Yarn
```#!/bin/bash
yarn add @react-google-maps/api
```
```jsx
import React from 'react'
import { GoogleMap, LoadScript } from '@react-google-maps/api';
const containerStyle = {
width: '400px',
height: '400px'
};
const center = {
lat: -3.745,
lng: -38.523
};
function MyComponent() {
const [map, setMap] = React.useState(null)
const onLoad = React.useCallback(function callback(map) {
const bounds = new window.google.maps.LatLngBounds();
map.fitBounds(bounds);
setMap(map)
}, [])
const onUnmount = React.useCallback(function callback(map) {
setMap(null)
}, [])
return (
{ /* Child components, such as markers, info windows, etc. */ }
<>
)
}
export default React.memo(MyComponent)
```
## Migration from react-google-maps@9.4.5
if you need an access to map object, instead of `ref` prop, you need to use `onLoad` callback on `` component.
Before:
```jsx
// before - don't do that!
{
const bounds = new window.google.maps.LatLngBounds();
map.fitBounds(bounds);
}}
/>
```
After:
```jsx
{
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 ``. 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=@react-google-maps/api](https://bundlephobia.com/result?p=@react-google-maps/api)
- forbids loading of Roboto fonts, if you set property preventGoogleFonts on `` component
## Examples
Examples can be found in two places:
1. [Official docs](https://react-google-maps-api-docs.netlify.app/) (powered by [react-styleguidist](https://github.com/styleguidist/react-styleguidist).
2. A Gatsby app including some examples. See the [examples](https://github.com/JustFly1984/react-google-maps-api/tree/master/packages/react-google-maps-api-gatsby-example/src/examples) folder
3. [Gatsby.js Demo](https://react-google-maps-api-gatsby-demo.netlify.app/)
## 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](https://developers.google.com/maps/documentation/embed/get-api-key)
## Community Help Resource
You can join the community at [Spectrum.chat](https://spectrum.chat/react-google-maps) to ask questions and help others with your experience or join our [Slack channel](https://join.slack.com/t/react-google-maps-api/shared_invite/enQtODc5ODU1NTY5MzQ4LTBiNTYzZmY1YmVjYzJhZThkMGU0YzUwZjJkNGJmYjk4YjQyYjZhMDk2YThlZGEzNDc0M2RhNjBmMWE4ZTJiMjQ)
## Contribute
Maintainers and contributors are very welcome! See [this issue](https://github.com/JustFly1984/react-google-maps-api/issues/18) to get started.
## How to test changes locally
When working on a feature/fix, you're probably gonna want to test your changes. This workflow is a work in progress. Please feel free to improve it!
1. In the file `packages/react-google-maps-api/package.json` change `main` to `"src/index.ts"`
2. In the same file, delete the `module` field
3. You can now use the package `react-google-maps-api-gatsby-example` to test your changes. Just make sure you change the import from `@react-google-maps/api` to `../../../react-google-maps-api`
Since 1.2.0 you can use onLoad and onMount props for each @react-google-maps/api component, ref does not contain API methods anymore.
Since version 1.2.2 We added useGoogleMap hook, which is working only with React@16.8.1 and later versions.
## Websites made with @react-google-maps-api
[DriveFromTo.com](https://www.drivefromto.com/en) Transfer Booking service PWA.
[Shipwrecks.cc](https://shipwrecks.cc/) Shipwrecks from Wikipedia visualized on the map [(Github)](https://github.com/lauriharpf/shipwrecks)
[nycmesh.net](https://nycmesh.net) Network topography visualized on the map [(Github)](https://github.com/meshcenter/network-map)
add your website by making PR!