@1771technologies/lytenyte-pro/dist/cell-selection/is-overlapping-rect.js

Blazingly fast headless React data grid with 100s of features.

export function isOverlappingRect(a, b) {
    const rowsOverlap = a.rowStart < b.rowEnd && b.rowStart < a.rowEnd;
    const columnsOverlap = a.columnStart < b.columnEnd && b.columnStart < a.columnEnd;
    return rowsOverlap && columnsOverlap;
}