import { ChangeDetectorRef, OnChanges, SimpleChanges, TemplateRef, ViewContainerRef } from '@angular/core';
import { Method } from '@rxap/pattern';
import * as i0 from "@angular/core";
export interface IfTruthyDirectiveTemplateContext<Data> {
    $implicit: Data;
}
export declare class IfTruthyDirective<Data, Parameters = any> implements OnChanges {
    private readonly templateRef;
    private readonly viewContainerRef;
    private readonly cdr;
    method: Method<Data, Parameters>;
    parameters: Parameters;
    trackBy: (data: Data) => any;
    private _last?;
    constructor(templateRef: TemplateRef<IfTruthyDirectiveTemplateContext<Data>>, viewContainerRef: ViewContainerRef, cdr: ChangeDetectorRef);
    /**
     * Asserts the correct type of the context for the template that `NgForOf` will render.
     *
     * The presence of this method is a signal to the Ivy template type-check compiler that the
     * `NgForOf` structural directive renders its template with a specific context type.
     */
    static ngTemplateContextGuard<T>(dir: IfTruthyDirective<T>, ctx: any): ctx is IfTruthyDirectiveTemplateContext<T>;
    ngOnChanges(changes: SimpleChanges): void;
    protected execute(): Promise<void>;
    protected hasChanged(current: Data): boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<IfTruthyDirective<any, any>, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<IfTruthyDirective<any, any>, "[rxapIfTruthy]", never, { "method": { "alias": "rxapIfTruthy"; "required": false; }; "parameters": { "alias": "rxapIfTruthyParameters"; "required": false; }; "trackBy": { "alias": "rxapIfTruthyTrackBy"; "required": false; }; }, {}, never, never, true, never>;
}