index.ts

import type { CalculatedColumnOrColumnGroup, Maybe } from '../types';

export * from './colSpanUtils';
export * from './domUtils';
export * from './eventUtils';
export * from './keyboardUtils';
export * from './renderMeasuringCells';
export * from './selectedCellUtils';
export * from './styleUtils';

export const { min, max, floor, sign, abs } = Math;

export function assertIsValidKeyGetter<R, K extends React.Key>(
  keyGetter: Maybe<(row: NoInfer<R>) => K>
): asserts keyGetter is (row: R) => K {
  if (typeof keyGetter !== 'function') {
    throw new Error('Please specify the rowKeyGetter prop to use selection');
  }
}

export function getHeaderCellRowSpan<R, SR>(
  column: CalculatedColumnOrColumnGroup<R, SR>,
  rowIdx: number
) {
  return column.parent === undefined ? rowIdx : column.level - column.parent.level;
}