sort()

in js/controllers/fragments.js [99:144]

• 28 lines of code
• 4 McCabe index (conditional complexity)

	sort( fragments, grouped = false ) {

		fragments = Array.from( fragments );

		let ordered = [],
			unordered = [],
			sorted = [];

		// Group ordered and unordered elements
		fragments.forEach( fragment => {
			if( fragment.hasAttribute( 'data-fragment-index' ) ) {
				let index = parseInt( fragment.getAttribute( 'data-fragment-index' ), 10 );

				if( !ordered[index] ) {
					ordered[index] = [];
				}

				ordered[index].push( fragment );
			}
			else {
				unordered.push( [ fragment ] );
			}
		} );

		// Append fragments without explicit indices in their
		// DOM order
		ordered = ordered.concat( unordered );

		// Manually count the index up per group to ensure there
		// are no gaps
		let index = 0;

		// Push all fragments in their sorted order to an array,
		// this flattens the groups
		ordered.forEach( group => {
			group.forEach( fragment => {
				sorted.push( fragment );
				fragment.setAttribute( 'data-fragment-index', index );
			} );

			index ++;
		} );

		return grouped === true ? ordered : sorted;

	}