export function sortByFrontmatter()

in _includes/queries.ts [104:135]

• 30 lines of code
• 7 McCabe index (conditional complexity)

export function sortByFrontmatter(
	items: EleventyCollectionItem[],
	sortByOption?: string
) {
	if (!sortByOption) {
		return;
	}

	let sortOrder = 1;
	if (sortByOption[0] === "-") {
		sortOrder = -1;
		sortByOption = sortByOption.substring(1);
	}

	switch (sortByOption) {
		case "title":
			items.sort((a, b) => {
				const aTitle = a.data.title.toLowerCase();
				const bTitle = b.data.title.toLowerCase();
				return (aTitle > bTitle ? -1 : bTitle > aTitle ? 1 : 0) * sortOrder;
			});
			break;
		case "date":
			items.sort((a, b) => {
				let result = a.page.date.getTime() - b.page.date.getTime();
				return result * sortOrder;
			});
			break;
		default:
			break;
	}
}