fast-level-equal

This is a fork of fast-deep-equal

I made this because React's shouldComponentUpdate implementation for PureComponent is too shallow. It's common for me to pass style={{...styleDefs}}, and this create a new object every time, thus PureComponent would still update because this.props.style !== nextProps.style.

Since this.props.style is usually an object that goes one level deep. Now with this package, I can prevent update on when style didn't change without doing a deep search in case there is a large, deeply nested object.

Usage

import levelEqual from 'fast-level-equal'

const depth = 2

shouldComponentUpdate(nextProps) {
  return !levelEqual(this.props, nextProps, depth)
}