import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
import { LogEntry } from './log4a.service';
import { AbstractLogger } from './log4a.model';
export declare class ConsoleAppender extends AbstractLogger {
    log(entry: LogEntry): Observable<boolean>;
    clear(): Observable<boolean>;
}
export declare class LocalStorageAppender extends AbstractLogger {
    constructor();
    log(entry: LogEntry): Observable<boolean>;
    clear(): Observable<boolean>;
}
export declare class WebApiAppender extends AbstractLogger {
    private http;
    constructor(http: HttpClient);
    log(entry: LogEntry): Observable<boolean>;
    clear(): Observable<boolean>;
    private handleErrors;
}