import { Subscription } from "rxjs/Subscription";
import { ProtocolClient, Content, Form, SecurityScheme } from "@node-wot/core";
import { NodeIdLike } from "node-opcua-nodeid";
export type Command = "Read" | "Write" | "Subscribe";
export interface NodeByBrowsePath {
    root: NodeIdLike;
    path: string;
}
export type NodeIdLike2 = NodeIdLike & {
    root: undefined;
    path: undefined;
};
export interface FormPartialNodeDescription {
    "opcua:nodeId"?: NodeIdLike | NodeByBrowsePath;
}
export interface OPCUAForm extends Form, FormPartialNodeDescription {
}
export declare class OPCUAProtocolClient implements ProtocolClient {
    #private;
    private _connections;
    private _securityMode;
    private _securityPolicy;
    private _useAutoChannel;
    private _userIdentity;
    get connectionCount(): number;
    private _createConnection;
    private _withConnection;
    private _withSession;
    private _getNamespaceArray;
    private _withSubscription;
    private _resolveNodeId3;
    private _resolveNodeId2;
    static getNodeId(form: OPCUAForm): NodeIdLike | NodeByBrowsePath;
    private _resolveNodeId;
    private _predictDataType;
    private _resolveMethodNodeId;
    readResource(form: OPCUAForm): Promise<Content>;
    writeResource(form: OPCUAForm, content: Content): Promise<void>;
    invokeResource(form: OPCUAForm, content: Content): Promise<Content>;
    subscribeResource(form: OPCUAForm, next: (content: Content) => void, error?: (error: Error) => void, complete?: () => void): Promise<Subscription>;
    private _unmonitor;
    unlinkResource(form: OPCUAForm): Promise<void>;
    requestThingDescription(uri: string): Promise<Content>;
    start(): Promise<void>;
    stop(): Promise<void>;
    setSecurity(securitySchemes: SecurityScheme[], credentials?: unknown): boolean;
    private _monitoredItems;
    private _dataValueToContent;
    private _contentToDataValue;
    private _contentToVariant;
    private _findBasicDataType;
    private _resolveInputArguments;
    private _resolveOutputArguments;
}