import { USWDSBaseComponent } from '@uswds-wc/core';
/**
 * USA Date Picker Web Component
 *
 * Minimal wrapper around USWDS date picker functionality.
 * All date picker behavior and calendar popup is managed by USWDS JavaScript.
 *
 * **MANDATORY INITIAL VALUE PATTERN**:
 * This component uses USWDS-native `data-default-value` pattern for initial value persistence.
 * DO NOT create custom restoration logic. See docs/USWDS_INITIAL_VALUE_PATTERN.md
 *
 * @element usa-date-picker
 * @fires date-change - Dispatched when the date value changes
 *
 * @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
 * @see ../../docs/USWDS_INITIAL_VALUE_PATTERN.md - MANDATORY initial value pattern
 *
 * @uswds-js-reference https://github.com/uswds/uswds/tree/develop/packages/usa-date-picker/src/index.js
 * @uswds-css-reference https://github.com/uswds/uswds/tree/develop/packages/usa-date-picker/src/styles/_usa-date-picker.scss
 * @uswds-docs https://designsystem.digital.gov/components/date-picker/
 * @uswds-guidance https://designsystem.digital.gov/components/date-picker/#guidance
 * @uswds-accessibility https://designsystem.digital.gov/components/date-picker/#accessibility
 */
export declare class USADatePicker extends USWDSBaseComponent {
    static styles: import('lit').CSSResult;
    value: string;
    name: string;
    inputId: string;
    label: string;
    hint: string;
    placeholder: string;
    disabled: boolean;
    required: boolean;
    readonly: boolean;
    minDate: string;
    maxDate: string;
    error: string;
    errorState: boolean;
    private cleanup?;
    connectedCallback(): void;
    firstUpdated(changedProperties: Map<string, any>): Promise<void>;
    updated(changedProperties: Map<string, any>): void;
    disconnectedCallback(): void;
    private handleInputChange;
    private handleKeydown;
    private renderLabel;
    private renderHint;
    private renderError;
    render(): import('lit-html').TemplateResult<1>;
    focus(): void;
    clear(): void;
    toggleCalendar(): void;
    isValid(): boolean;
}
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