All files / Paginator Paginator.selectors.ts

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import _ from 'lodash';
 
export function totalPagesSelector({
	pageSizeOptions,
	selectedPageSizeIndex,
	totalCount,
	totalPages,
}: {
	pageSizeOptions: number[];
	selectedPageSizeIndex: number;
	totalCount: number;
	totalPages: number;
}) {
	const pageSize = pageSizeOptions[selectedPageSizeIndex];
	return _.isNumber(totalPages)
		? totalPages
		: totalCount <= pageSize
		? 1
		: Math.floor(totalCount / pageSize) + _.clamp(totalCount % pageSize, 0, 1);
}
 
export default {
	totalPages: totalPagesSelector,
};