import { useMemo } from 'react'; /** * Get sticky column offset width */ function useStickyOffsets(colWidths, columnCount, direction) { var stickyOffsets = useMemo(function () { var leftOffsets = []; var rightOffsets = []; var left = 0; var right = 0; for (var start = 0; start < columnCount; start += 1) { if (direction === 'rtl') { // Left offset rightOffsets[start] = right; right += colWidths[start] || 0; // Right offset var end = columnCount - start - 1; leftOffsets[end] = left; left += colWidths[end] || 0; } else { // Left offset leftOffsets[start] = left; left += colWidths[start] || 0; // Right offset var _end = columnCount - start - 1; rightOffsets[_end] = right; right += colWidths[_end] || 0; } } return { left: leftOffsets, right: rightOffsets }; }, [colWidths, columnCount, direction]); return stickyOffsets; } export default useStickyOffsets;