import { Observable } from 'rxjs';
import { ObserveBaseDirective } from './observe-base.directive';
import { ObservableMap, EmittedMapOf, ObserveMapContext } from './types/maps';
import * as i0 from "@angular/core";
/**
 * The base class for `*observe` directives combining observables using a map of observable values (i.e. { x: x$, y: y$ }).
 *
 * Emitted values will be available as the implicit context values but will also be spread into the context by key.
 * Meaning, this would work:
 * ```html
 * <div *observeXXX="{ x: x$, y: y$ } as result">{{result.x}}</div>
 * ```
 *
 * And this also:
 * ```
 * <div *observeXXX="{ x: x$, y: y$ }; let x = x">{{x}}</div>
 * ```
 *
 * @export
 * @abstract
 * @class ObserveMapDirective
 * @extends {ObserveBaseDirective<TInput, EmittedMapOf<TInput>, TContext>}
 * @template TInput The type of observable map.
 * @template TContext The the of context the directive will provide to the view.
 */
export declare abstract class ObserveMapDirective<TInput extends ObservableMap, TContext extends ObserveMapContext<TInput>> extends ObserveBaseDirective<TInput, EmittedMapOf<TInput>, TContext> {
    protected createViewContext(data: {
        value?: EmittedMapOf<TInput> | null;
        source?: Observable<EmittedMapOf<TInput>>;
    }): TContext;
    static ɵfac: i0.ɵɵFactoryDeclaration<ObserveMapDirective<any, any>, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ObserveMapDirective<any, any>, never, never, {}, {}, never, never, false>;
}