import * as i0 from "@angular/core";
/**
 * Base directive for accordion item components across different design systems.
 * Provides common functionality for accordion items.
 */
export declare class AccordionItemDirective {
    /** The unique identifier for the accordion item. This input is required. */
    readonly itemId: import("@angular/core").InputSignal<string>;
    /** The text displayed in the accordion item heading. This input is required. */
    readonly heading: import("@angular/core").InputSignal<string>;
    /** Optional summary text displayed below the heading. */
    readonly summary: import("@angular/core").InputSignal<string | undefined>;
    /** Whether the accordion item is expanded. Defaults to false. */
    readonly expanded: import("@angular/core").InputSignalWithTransform<boolean, unknown>;
    static ɵfac: i0.ɵɵFactoryDeclaration<AccordionItemDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<AccordionItemDirective, never, never, { "itemId": { "alias": "itemId"; "required": true; "isSignal": true; }; "heading": { "alias": "heading"; "required": true; "isSignal": true; }; "summary": { "alias": "summary"; "required": false; "isSignal": true; }; "expanded": { "alias": "expanded"; "required": false; "isSignal": true; }; }, {}, never, never, true, never>;
}