import { BehaviorSubject } from 'rxjs';
import * as i0 from "@angular/core";
export declare class MessageService {
    messages$: BehaviorSubject<Array<any>>;
    constructor();
    updateMessages(messages: Array<any>): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<MessageService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<MessageService>;
}
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