/**
 * A function that returns a boolean.
 */
export type BooleanReturnFunction = (...args: any[]) => boolean;
/**
 * Inverts the output of an arbitrary boolean-returning function.
 *
 * @param decisionFn - The function whose boolean return value to invert
 * @param invert - Whether to apply the inversion (defaults to true)
 * @returns The inverted function, or the original if invert is false
 */
export declare function invertBooleanReturnFunction<F extends BooleanReturnFunction>(decisionFn: F, invert?: boolean): F;