import { type Falsy, type Truthy } from '@augment-vir/assert';
/**
 * Checks an input for truthiness then calls the respective callback, returning the callback's
 * output.
 *
 * @category Function
 * @category Package : @augment-vir/common
 * @example
 *
 * ```ts
 * import {ifTruthy} from '@augment-vir/common';
 *
 * const result1 = ifTruthy(
 *     true,
 *     () => 1,
 *     () => 2,
 * ); // result1 is `1`
 * const result2 = ifTruthy(
 *     false,
 *     () => 1,
 *     () => 2,
 * ); // result2 is `2`
 * ```
 *
 * @returns The called callback's output.
 * @package [`@augment-vir/common`](https://www.npmjs.com/package/@augment-vir/common)
 */
export declare function ifTruthy<const InputType, IfTruthyType, IfFalsyType>(checkThis: InputType, ifTruthyCallback: (truthyInput: Truthy<InputType>) => IfTruthyType, ifFalsyCallback: (truthyInput: Falsy<InputType>) => IfFalsyType): IfTruthyType | IfFalsyType;