import * as i0 from "@angular/core";
export declare class DetailsDirective {
    /** The text shown in the details summary element. This input is required. */
    readonly summary: import("@angular/core").InputSignal<string>;
    static ɵfac: i0.ɵɵFactoryDeclaration<DetailsDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<DetailsDirective, never, never, { "summary": { "alias": "summary"; "required": true; "isSignal": true; }; }, {}, never, never, true, never>;
}