import * as i0 from "@angular/core";
export declare class SdInvalidDirective {
    invalidMessage: import("@angular/core").InputSignal<string>;
    constructor();
    static ɵfac: i0.ɵɵFactoryDeclaration<SdInvalidDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<SdInvalidDirective, "[sd-invalid]", never, { "invalidMessage": { "alias": "sd-invalid"; "required": true; "isSignal": true; }; }, {}, never, never, true, never>;
}