/**
 * Williams Accumulation/Distribution (WAD).
 * Accumulates the money flow based on price movement using either a dense
 * fast-path or a NaN-aware path depending on `skipna` and input contents.
 * @param high High price series
 * @param low Low price series
 * @param close Close price series
 * @param skipna Whether to ignore NaNs (default: true)
 * @returns Float64Array of WAD values (NaN where undefined)
 */
export declare function wad(high: ArrayLike<number>, low: ArrayLike<number>, close: ArrayLike<number>, skipna?: boolean): Float64Array;