import { TimeFormat } from '../types';
/**
 * Options for auto-rounding functionality.
 */
export interface AutoRoundingOptions {
    /** Whether auto-rounding is enabled. */
    autoround: boolean;
    /** Time increment in minutes. */
    step?: number;
    /** Time format (12 or 24 hour). */
    format: TimeFormat;
}
/**
 * Gets the next future step for a given time based on the step increment.
 *
 * @param time - The current time string
 * @param step - The step increment in minutes
 * @param format - The time format (12 or 24 hour)
 * @returns The next step time string
 */
export declare function getNextFutureStep(time: string, step: number, format: TimeFormat): string;
/**
 * Handles auto-rounding of time values based on step intervals.
 *
 * @param time - The time to potentially auto-round
 * @param options - Auto-rounding configuration options
 * @returns The rounded time or the original time if no rounding is needed
 */
export declare function handleAutoRounding(time: string | null, options: AutoRoundingOptions): string | null;
/**
 * Generates AM/PM variants for 12-hour format auto-rounding when user hasn't specified AM/PM.
 *
 * @param currentTime - The current time string
 * @param step - Step increment in minutes
 * @param inputValue - Original user input to check for AM/PM specification
 * @returns Array of time options (AM only, PM only, or both)
 */
export declare function generateAmPmVariants(currentTime: string, step: number, inputValue: string): string[];
/**
 * Tries to generate PM interpretation options for ambiguous input.
 *
 * @param currentTime - The current time string
 * @param step - Step increment in minutes
 * @param inputValue - Original user input
 * @returns Array of PM time options or empty array
 */
export declare function generatePmInterpretation(currentTime: string, step: number, inputValue: string): string[];
/**
 * Gets auto-rounding options for dropdown suggestions when no matches are found.
 *
 * @param currentTime - The current parsed time
 * @param step - Step increment in minutes
 * @param format - Time format (12 or 24 hour)
 * @param inputValue - Original user input
 * @param min - Minimum time constraint
 * @returns Array of auto-rounded time options
 */
export declare function getAutoRoundingOptions(currentTime: string | null, step: number, format: TimeFormat, inputValue: string, min?: string): string[];