Function isPair

src/sort.ts:58–68

@internal

(t: Sort)

/** @internal */
function isPair(t: Sort): t is readonly [string, SortDirection] {
  if (Array.isArray(t) && t.length === 2) {
    try {
      prepareDirection(t[1]);
      return true;
    } catch {
      return false;
    }
  }
  return false;
}

function isDeep(t: Sort): t is ReadonlyArray<readonly [string, SortDirection]> {
  return Array.isArray(t) && Array.isArray(t[0]);