export type RowMap<V = any> = Record<string, V>;
export type RowHashArray<V = any> = [string, V][];
export type RowArray = string[];
export type Row = RowArray | RowHashArray | RowMap;
export type RowTransformCallback<R extends Row> = (error?: Error | null, row?: R) => void;
export type SyncRowTransform<I extends Row, O extends Row> = (row: I) => O;
export type AsyncRowTransform<I extends Row, O extends Row> = (row: I, cb: RowTransformCallback<O>) => void;
export type RowTransformFunction<I extends Row, O extends Row> = SyncRowTransform<I, O> | AsyncRowTransform<I, O>;
export declare const isSyncTransform: <I extends Row, O extends Row>(transform: RowTransformFunction<I, O>) => transform is SyncRowTransform<I, O>;