ractive/src/utils/hashmapContentsMatch.js

Next-generation DOM manipulation

import isObject from 'utils/isObject';
import 'legacy';

export default function hashmapContentsMatch ( a, b ) {
	var aKeys, bKeys;

	if ( !isObject( a ) || !isObject( b ) ) {
		return false;
	}

	if ( a === b ) {
		return true;
	}

	aKeys = Object.keys( a );
	bKeys = Object.keys( b );

	if ( aKeys.length !== bKeys.length ) {
		return false;
	}

	return aKeys.every( function ( key ) {
		return a[ key ] === b[ key ];
	});
}