import { StorageService } from '../../storage/services/storage.service';
import { ChannelPropertyEntity } from '../entities/devices.entity';
import { PropertyValueState } from '../models/property-value-state.model';
export declare class PropertyValueService {
    private readonly storageService;
    private readonly logger;
    private valuesMap;
    private recentValuesMap;
    constructor(storageService: StorageService);
    write(property: ChannelPropertyEntity, value: string | boolean | number | null): Promise<boolean>;
    readLatest(property: ChannelPropertyEntity): Promise<PropertyValueState | null>;
    delete(property: ChannelPropertyEntity): Promise<void>;
    private computeTrend;
    private isNumericDataType;
    private validateValue;
    private isInvalidValue;
}