import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class TreeNode<T> {
    readonly treeNodeType: import("@angular/core").InputSignal<T | T[] | Observable<T[]>>;
    static ngTemplateContextGuard<T>(directive: TreeNode<T>, context: any): context is {
        $implicit: T;
        expanded: boolean;
        canExpand: boolean;
        selected: boolean;
    };
    static ɵfac: i0.ɵɵFactoryDeclaration<TreeNode<any>, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<TreeNode<any>, "[treeNode]", never, { "treeNodeType": { "alias": "treeNodeType"; "required": false; "isSignal": true; }; }, {}, never, never, true, never>;
}