react-height 
Component-wrapper to determine and report children elements height
Goals
react-heightkeeps things simple, therefore it does not support nested height change, it only checks immediate children change- not based on specific browser APIs, so can be used in other environments too
Demo
https://nkbt.github.io/react-height
Codepen demo
https://codepen.io/nkbt/pen/NGzgGb
Installation
NPM
npm install --save react-height
yarn
yarn add react-height
1998 Script Tag:
<script src="https://unpkg.com/react/umd/react.production.min.js"></script>
<script src="https://unpkg.com/react-height/build/react-height.js"></script>
(Module exposed as `ReactHeight`)
Usage
import {ReactHeight} from 'react-height';
<ReactHeight onHeightReady={height => console.log(height)}>
<div>Random content</div>
</ReactHeight>
Options
onHeightReady: PropTypes.func.isRequired
Callback, invoked when height is measured (and when it is changed).
getElementHeight: PropTypes.func
Function to measure your element. It receives the element as argument and defaults to el => el.clientHeight.
children: PropTypes.node.isRequired
One or multiple children with static, variable or dynamic height.
<ReactHeight onHeightReady={height => console.log(height)}>
<p>Paragraph of text</p>
<p>Another paragraph is also OK</p>
<p>Images and any other content are ok too</p>
<img src="nyancat.gif" />
</ReactHeight>
hidden: PropTypes.bool (default: false)
ReactHeight can render to null as soon as height is measured.
<ReactHeight hidden={true} onHeightReady={height => console.log(height)}>
<div>Will be removed from the DOM when height is measured</div>
</ReactHeight>
Pass-through props
All other props are applied to a container that is being measured. So it is possible to pass style or className, for example.
<ReactHeight onHeightReady={height => console.log(height)}
style={{width: 200, border: '1px solid red'}}
className="myComponent">
<div>
Wrapper around this element will have red border, 200px width
and `class="myComponent"`
</div>
</ReactHeight>
Development and testing
Currently is being developed and tested with the latest stable Node on OSX.
To run example covering all ReactHeight features, use yarn start, which will compile example/index.js
git clone git@github.com:nkbt/react-height.git
cd react-height
yarn install
yarn start
# then
open http://localhost:8080
Tests
# to run ESLint check
yarn lint
# to run tests
yarn test
License
MIT