React Native SectionList getItemLayout

This package provides a function that helps you construct the getItemLayout function for your SectionLists. For an explanation of why this exists, see this post. It's meant to be used like this:

``javascript
import sectionListGetItemLayout from 'react-native-section-list-get-item-layout'

class MyComponent extends React.Component {
constructor(props) {
super(props)

this.getItemLayout = sectionListGetItemLayout({
// The height of the row with rowData at the given sectionIndex and rowIndex
getItemHeight: (rowData, sectionIndex, rowIndex) => sectionIndex === 0 ? 100 : 50,

// These four properties are optional
getSeparatorHeight: () => 1 / PixelRatio.get(), // The height of your separators
getSectionHeaderHeight: () => 20, // The height of your section headers
getSectionFooterHeight: () => 10, // The height of your section footers
listHeaderHeight: 40, // The height of your list header
})
}

render() {
return (
{...otherStuff}
getItemLayout={this.getItemLayout}
/>
)
}
}
``