import { type Factory, type GetterOrValue } from '../getter/getter';
export type NumberFactory = Factory<number>;
/**
 * incrementingNumberFactory() configuration.
 */
export interface IncrementingNumberFactoryConfig {
    /**
     * Value to start at. Defaults to 0.
     */
    startAt?: number;
    /**
     * Getter to increase by. Defaults to 1.
     */
    increaseBy?: GetterOrValue<number>;
}
/**
 * Creates a factory that returns sequentially increasing numbers, starting from a configurable value and incrementing by a configurable step.
 *
 * @param config - Configuration with optional `startAt` (default 0) and `increaseBy` (default 1)
 * @returns A factory function that returns the next number in the sequence on each call
 *
 * @example
 * ```ts
 * const factory = incrementingNumberFactory({ startAt: 10, increaseBy: 5 });
 * factory(); // 10
 * factory(); // 15
 * factory(); // 20
 * ```
 */
export declare function incrementingNumberFactory(config?: IncrementingNumberFactoryConfig): NumberFactory;