import { USWDSBaseComponent } from '@uswds-wc/core';
export interface TimeChangeDetail {
    value: string;
    displayValue: string;
}
/**
 * USA Time Picker Web Component
 *
 * Minimal wrapper around USWDS time picker functionality.
 * All time option generation, filtering, and dropdown behavior is managed by USWDS JavaScript.
 *
 * @element usa-time-picker
 * @fires time-change - Dispatched when time value changes (via USWDS)
 *
 * @see README.mdx - Complete API documentation, usage examples, and implementation notes
 * @see CHANGELOG.mdx - Component version history and breaking changes
 * @see TESTING.mdx - Testing documentation and coverage reports
 *
 * @uswds-js-reference https://github.com/uswds/uswds/tree/develop/packages/usa-time-picker/src/index.js
 * @uswds-css-reference https://github.com/uswds/uswds/tree/develop/packages/usa-time-picker/src/styles/_usa-time-picker.scss
 * @uswds-docs https://designsystem.digital.gov/components/time-picker/
 * @uswds-guidance https://designsystem.digital.gov/components/time-picker/#guidance
 * @uswds-accessibility https://designsystem.digital.gov/components/time-picker/#accessibility
 */
export declare class USATimePicker extends USWDSBaseComponent {
    static styles: import('lit').CSSResult;
    value: string;
    name: string;
    inputId: string;
    listId: string;
    label: string;
    hint: string;
    placeholder: string;
    disabled: boolean;
    required: boolean;
    minTime: string;
    maxTime: string;
    step: string;
    error: string;
    errorState: boolean;
    private cleanup?;
    private valueObserver?;
    private internalInput?;
    private valueChangeHandler?;
    connectedCallback(): void;
    firstUpdated(changedProperties: Map<string, any>): Promise<void>;
    /**
     * Set up observer to sync internal USWDS value changes back to component property
     * USWDS combo-box updates the internal input/select without dispatching events we can catch
     */
    private setupValueObserver;
    disconnectedCallback(): void;
    /**
     * Format time value for display (convert 24-hour to 12-hour with AM/PM if needed)
     * USWDS time-picker expects 12-hour format like "2:30pm"
     */
    private formatTimeForDisplay;
    private handleTimeChange;
    private renderError;
    private renderRequiredIndicator;
    private renderHint;
    private renderInput;
    render(): import('lit-html').TemplateResult<1>;
    show(): void;
    hide(): void;
    updateOptions(): void;
}
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