@eva-ics/webengine/dist/webengine.es.d.ts

EVA ICS HMI Web Engine

import { Logger } from "bmat/log";
import { SubMap } from "submap";
declare enum SerializationKind {
    JSON = "json",
    MsgPack = "msgpack"
}
declare enum EvaErrorKind {
    NOT_FOUND = -32001,
    ACCESS_DENIED = -32002,
    SYSTEM_ERROR = -32003,
    OTHER = -32004,
    NOT_READY = -32005,
    UNSUPPORTED = -32006,
    CORE_ERROR = -32007,
    TIMEOUT = -32008,
    INVALID_DATA = -32009,
    FUNC_FAILED = -32010,
    ABORTED = -32011,
    ALREADY_EXISTS = -32012,
    BUSY = -32013,
    METHOD_NOT_IMPLEMENTED = -32014,
    TOKEN_RESTRICTED = -32015,
    IO = -32016,
    REGISTRY = -32017,
    EVAHI_AUTH_REQUIRED = -32018,
    ACCESS_DENIED_MORE_DATA_REQUIRED = -32022,
    PARSE = -32700,
    INVALID_REQUEST = -32600,
    METHOD_NOT_FOUND = -32601,
    INVALID_PARAMS = -32602,
    INTERNAL_RPC = -32603,
    BUS_CLIENT_NOT_REGISTERED = -32113,
    BUS_DATA = -32114,
    BUS_IO = -32115,
    BUS_OTHER = -32116,
    BUS_NOT_SUPPORTED = -32117,
    BUS_BUSY = -32118,
    BUS_NOT_DELIVERED = -32119,
    BUS_TIMEOUT = -32120,
    BUS_ACCESS = -32121
}
declare enum EventKind {
    HeartbeatSuccess = "heartbeat.success",
    HeartbeatError = "heartbeat.error",
    LoginSuccess = "login.success",
    LoginFailed = "login.failed",
    LoginOTPRequired = "login.otp_required",
    LoginOTPInvalid = "login.otp_invalid",
    LoginOTPSetup = "login.otp_setup",
    WsEvent = "ws.event",
    ServerReload = "server.reload",
    ServerRestart = "server.restart",
    LogRecord = "log.record",
    LogPostProcess = "log.postprocess",
    WASMError = "wasm.error"
}
declare enum StateProp {
    Status = "status",
    Value = "value",
    Any = "any"
}
interface EvaConfig {
    engine?: EvaEngineConfig;
}
interface EvaEngineConfig {
    api_uri?: string;
    apikey?: string;
    debug?: boolean | number;
    login?: string;
    password?: string;
    set_auth_cookies?: boolean;
    state_updates?: boolean | Array<string>;
    wasm?: boolean | string;
    ws_mode?: boolean;
    log_params?: LogParams;
    interval: {
        [key in IntervalKind]: number;
    };
}
interface OTPParams {
    size?: number;
    issuer?: string;
    user?: string;
    xtr?: string;
}
interface HiQRParams {
    size?: number;
    url?: string;
    user?: string;
    password?: string;
}
interface LogRecord {
    dt: string;
    h: string;
    l: number;
    lvl: string;
    mod: string;
    msg: string;
    t: number;
    th: string | null;
}
interface SvcMessage {
    kind: string;
    svc: string;
    message?: string;
    value?: string;
}
interface JsonRpcRequest {
    jsonrpc: string;
    method: string;
    params?: object;
    id: number;
}
interface External {
    fetch?: any;
    WebSocket?: any;
    QRious?: any;
    msgpack?: any;
}
interface ActionResult {
    elapsed: number;
    exitcode: number | null;
    finished: boolean;
    node: string;
    oid: string;
    params: any;
    priority: number;
    status: string;
    svc: string;
    time: any;
    uuid: string;
    out: null | string;
    err: null | string;
}
interface LogParams {
    level: number;
    records: number;
}
interface ItemState {
    act?: number;
    connected?: boolean;
    enabled?: boolean;
    ieid?: Array<number>;
    meta?: object;
    node?: string;
    oid?: string;
    status?: number | null;
    t?: number;
    value: any;
}
interface Watcher {
    func: (state: ItemState) => void;
    prot: boolean;
}
declare enum IntervalKind {
    AjaxReload = "ajax_reload",
    AjaxLogReload = "log_reload",
    ActionWatch = "action_watch",
    Heartbeat = "heartbeat",
    Reload = "reload",
    Restart = "restart",
    WSBufTTL = "ws_buf_ttl"
}
declare class EvaError {
    code: number;
    message?: string;
    data?: any;
    constructor(code: number, message?: string, data?: any);
}
declare class EvaBulkRequestPartHandler {
    fn_ok?: (result: any) => void;
    fn_err?: (result: any) => void;
    constructor();
    then(fn_ok: (result: any) => void): this;
    catch(fn_err: (err: any) => void): this;
}
declare class EvaBulkRequest {
    requests: Map<number, EvaBulkRequestPartHandler>;
    payload: Array<any>;
    eva: Eva;
    constructor(eva: Eva);
    /**
     * Prepare API function call for bulk calling
     *
     * Calls any available SFA API function
     *
     * @param p1 item OID (if required) or API call params
     * @param p2 extra call params or empty object
     * @param fn_ok function which is executed on successfull call
     * @parma fn_err function which is executed on error
     *
     * @returns Part handler object
     */
    prepare(method: string, p1: string | object, p2?: object): EvaBulkRequestPartHandler;
    /**
     * Perform bulk API call
     */
    call(): Promise<boolean>;
}
declare class Eva_ACTION {
    eva: Eva;
    constructor(eva: Eva);
    /**
     * Call unit action with value=1
     *
     * @param oid {string} unit OID
     * @param wait {boolean} wait until the action is completed (default: true)
     */
    start(oid: string, wait?: boolean): Promise<ActionResult>;
    /**
     * Call unit action with value=0
     *
     * @param oid {string} unit OID
     * @param wait {boolean} wait until the action is completed (default: true)
     */
    stop(oid: string, wait?: boolean): Promise<ActionResult>;
    /**
     * Call unit action to toggle its value
     *
     * @param oid {string} unit OID
     * @param wait {boolean} wait until the action is completed (default: true)
     */
    toggle(oid: string, wait?: boolean): Promise<ActionResult>;
    /**
     * Call unit action
     *
     * @param oid {string} unit OID
     * @param params {object} action params
     * @param wait {boolean} wait until the action is completed (default: true)
     */
    exec(oid: string, params: object, wait?: boolean): Promise<ActionResult>;
    /**
     * Terminate all unit actions
     *
     * @param oid {string} unit OID
     */
    kill(oid: string): Promise<void>;
    /**
     * Terminate a unit action
     *
     * @param uuid {string} action uuid
     */
    terminate(uuid: string): Promise<void>;
    /**
     * Run lmacro
     *
     * @param oid {string} lmacro oid
     * @param params {object} call params
     * @param wait {boolean} wait until completed (default: true)
     */
    run(oid: string, params?: object, wait?: boolean): Promise<ActionResult>;
    _act(method: string, oid: string, params?: object, wait?: boolean): Promise<ActionResult>;
}
declare class Eva_LVAR {
    eva: Eva;
    constructor(eva: Eva);
    /**
     * Reset lvar (set status to 1)
     *
     * @param oid {string} lvar oid
     */
    reset(oid: string): Promise<void>;
    /**
     * Clear lvar (set status to 0)
     *
     * @param oid {string} lvar oid
     */
    clear(oid: string): Promise<void>;
    /**
     * Toggle lvar status
     *
     * @param oid {string} lvar oid
     */
    toggle(oid: string): Promise<void>;
    /**
     * Increment lvar value
     *
     * @param oid {string} lvar oid
     *
     * @returns the new value
     */
    incr(oid: string): Promise<number>;
    /**
     * Decrement lvar value
     *
     * @param oid {string} lvar oid
     *
     * @returns the new value
     */
    decr(oid: string): Promise<number>;
    /**
     * Set lvar state
     *
     * @param oid {string} lvar oid
     * @param status {numberr} lvar status
     * @param value lvar value
     */
    set(oid: string, status?: number, value?: any): Promise<void>;
    /**
     * Set lvar status
     *
     * @param oid {string} lvar oid
     * @param status {number} lvar status
     */
    set_status(oid: string, status: number): Promise<void>;
    /**
     * Set lvar value
     *
     * @param oid {string} lvar oid
     * @param value lvar value
     */
    set_value(oid: string, value: any): Promise<void>;
    /**
     * Get lvar expiration time left
     *
     * @param lvar_oid {string} lvar OID
     *
     * @returns seconds to expiration, -1 if expired, -2 if stopped
     */
    expires(lvar_oid: string): number | null | undefined;
}
/**
 * Binary stream parameters
 */
interface EvaStreamParameters {
    /**
     * OID the data is streamed from
     */
    oid: string;
    /**
     * Name of the stream, used for identification, unique
     */
    name: string;
    /**
     * On start callback
     */
    onStart?: () => void;
    /**
     * On data callback
     */
    onData?: (data: ArrayBuffer) => void;
    /**
     * On error callback
     */
    onError?: (err: EvaError) => void;
    /**
     * On end of stream callback, the stream is not closed and may receive more
     * data, but the handler must be prepared certain stream parameters may
     * change
     */
    onEOS?: () => void;
}
declare class _EvaStream {
    oid: string;
    eva: Eva;
    name: string;
    ws: WebSocket | null;
    onStart: () => void;
    onData: (data: ArrayBuffer) => void;
    onError: (err: EvaError) => void;
    onEOS: () => void;
    constructor(oid: string, name: string, eva: Eva);
    _restart(): void;
    _start(): void;
    _stop(): void;
}
declare class _EvaStateBlock {
    state_updates: boolean | Array<string>;
    eva: Eva;
    name: string;
    _ajax_reloader: any;
    constructor(name: string, state_updates: boolean | Array<string>, engine: Eva);
    _start(): void;
    _restart(): void;
    _stop(): void;
}
declare enum TokenMode {
    Normal = "normal",
    ReadOnly = "readonly"
}
declare enum SessionAuthKind {
    Token = "token",
    Key = "key",
    Login = "login",
    No = "unauthorized"
}
interface SessionACI {
    acl: string;
    auth: SessionAuthKind;
    auth_svc: string;
    token_mode: TokenMode;
    u: string;
}
interface ACLProp {
    items: Array<string>;
    pvt: Array<string>;
    rpvt: Array<string>;
}
declare enum ACLOp {
    Log = "log",
    Developer = "developer",
    Moderator = "moderator",
    Supervisor = "supervisor"
}
interface SessionACL {
    admin?: boolean;
    deny_read: ACLProp;
    deny_write: ACLProp;
    from: Array<string>;
    id: string;
    meta: {
        [key: string]: Array<any>;
    };
    ops: Array<ACLOp>;
    read: ACLProp;
    write: ACLProp;
}
interface ServerInfo {
    aci: SessionACI;
    acl: SessionACL;
    build: number;
    ok: boolean;
    product_code: string;
    product_name: string;
    system_name: string;
    time: number;
    uptime: number;
    version: string;
}
declare enum LoginState {
    Active = "active",
    Starting = "starting",
    Stopping = "stopping",
    Inactive = "inactive",
    Failed = "failed",
    OTPRequired = "otp.required",
    OTPInvalid = "otp.invalid",
    OTPSetup = "otp.setup"
}
interface SessionState {
    login: LoginState;
    error: EvaError | null;
    otp: string | null;
}
/**
 * The default session state
 */
declare const defaultSessionState: () => SessionState;
type EventHandler = (topic: string, event: any) => void;
declare enum EventTopic {
    ItemState = "ST",
    Server = "SERVER",
    Supervisor = "SUPERVISOR",
    WeSession = "WE/SESSION",
    WeItemState = "WE/ST"
}
declare class Eva {
    #private;
    action: Eva_ACTION;
    lvar: Eva_LVAR;
    api_uri: string;
    ws_uri: string;
    api_token: string;
    authorized_user: string | null;
    clear_unavailable: boolean;
    debug: boolean | number;
    allow_logged_in_calls_only: boolean;
    external: External;
    evajw: any;
    in_evaHI: boolean;
    log_params: LogParams;
    log: Logger;
    logged_in: boolean;
    login: string;
    login_xopts: object | null;
    log_level_names: Map<number, string>;
    set_auth_cookies: boolean;
    state_updates: boolean | Array<string>;
    tsdiff: number;
    version: string;
    wasm: boolean | string;
    ws_mode: boolean;
    server_info: ServerInfo | null;
    ignore_password_set_on_next_login: boolean;
    _event_map: SubMap<EventHandler> | null;
    _api_call_id: number;
    _handlers: Map<EventKind, (...args: any[]) => void | boolean>;
    _intervals: Map<IntervalKind, number>;
    _ws_handler_registered: boolean;
    _heartbeat_reloader: any;
    _ajax_reloader: any;
    _log_reloader: any;
    _scheduled_restarter: any;
    _states: Map<string, Map<string, ItemState>>;
    _blocks: Map<string, _EvaStateBlock>;
    _streams: Map<string, _EvaStream>;
    _last_ping: Map<string, number | null>;
    _last_pong: Map<string, number | null>;
    ws: Map<string, WebSocket>;
    _action_states: Map<string, ActionResult>;
    _action_watch_functions: Map<String, Array<(result: ActionResult | EvaError) => void>>;
    _log_subscribed: boolean;
    _log_started: boolean;
    _log_first_load: boolean;
    _log_loaded: boolean;
    _update_state_functions: Map<string, Array<Watcher>>;
    _update_state_mask_functions: Map<string, Array<Watcher>>;
    _lr2p: Array<LogRecord>;
    constructor();
    /**
     * Enables pub/sub event map. Usually not required to be called manually, as
     * called automatically as soon as there is a subscription performed.
     */
    enable_event_map(): void;
    /**
     * Subscribe to an event topic
     *
     * @param topic {string} event topic
     * @param fn {EventHandler} event handler
     *
     * @returns true if subscription was successful
     */
    subscribe_event_topic(topic: string, fn: EventHandler): boolean;
    /**
     * Subscribe to multiple event topics
     *
     * @param topics {Array<string>} event topics
     * @param fn {EventHandler} event handler
     * @returns true if subscription was successful
     */
    subscribe_event_topics(topics: Array<string>, fn: EventHandler): boolean;
    /**
     * Unsubscribe from an event topic
     *
     * @param topic {string} event topic
     * @param fn {EventHandler} event handler
     */
    unsubscribe_event_topic(topic: string, fn: EventHandler): void;
    /**
     * Unsubscribe from multiple event topics
     *
     * @param topics {Array<string>} event topics
     * @param fn {EventHandler} event handler
     */
    unsubscribe_event_topics(topics: Array<string>, fn: EventHandler): void;
    /**
     * Unsubscribe from all event topics
     *
     * @param fn {EventHandler} event handler
     */
    unsubscribe_all_event_topics(fn: EventHandler): void;
    _push_event_topic(topic: string, data: any): void;
    /**
     * Set engine login credentials
     *
     * @param login {string|null} login
     * @param password {string|null} password
     */
    set_login_password(login?: string | null, password?: string | null): void;
    /**
     * Set/clear engine API key
     *
     * @param apikey {string | null} API key
     */
    set_api_key(apikey?: string | null): void;
    /**
     * Is engine password set
     *
     * @returns true if password is set
     */
    is_password_set(): boolean;
    /**
     * Is engine authentication set
     *
     * @returns true if auth is set
     */
    is_auth_set(): boolean;
    /**
     * Clear engine authenication credentials
     */
    clear_auth(): void;
    /**
     * Start a binary stream
     *
     * @param params {EvaStreamParameters} stream parameters
     */
    start_stream(params: EvaStreamParameters): void;
    /**
     * Stop a binary stream
     *
     * @param name {string} stream name
     */
    stop_stream(name: string): void;
    /**
     * Register a state block
     *
     * @param name {string} block name
     * @param state_updates {boolean | Array<string>} state updates
     */
    register_state_block(name: string, state_updates: boolean | Array<string>): void;
    /**
     * Unregister a state block
     *
     * @param name {string} block name
     */
    unregister_state_block(name: string): void;
    /**
     * Unregister all state blocks
     */
    unregister_all_state_blocks(): void;
    bulk_request(): EvaBulkRequest;
    /**
     * Get engine mode
     
     * @returns "js" or "wasm"
     */
    get_mode(): string;
    /**
     * Start the engine
     *
     * After calling the function authenticates user, opens a WebSocket (in
     * case of WS mode) or schedule AJAXs refresh interval.
     */
    start(): void;
    _start_engine(): boolean;
    /**
     * Get system name
     *
     * @returns the system name or null if the engine is not logged in
     */
    system_name(): string;
    /**
     * Sleep the number of seconds
     *
     * @param sec {number} seconds to sleep
     */
    sleep(sec: number): Promise<void>;
    /**
     * Start log processing
     *
     * Starts log processing. The engine must be already logged in.
     *
     * @param log_level {number} log processing level (optional)
     */
    log_start(log_level?: number): void;
    /**
     * Set state updates without restart required
     *
     * @param state_updates {boolean} true/false or a string array
     * @param clear_existing {boolean} clear existing states
     *
     */
    set_state_updates(state_updates: Array<string> | boolean, clear_existing?: boolean): Promise<void>;
    /**
     * Change log processing level
     *
     * @param log_level {number} log processing level
     */
    set_log_level(log_level: number): void;
    /**
     * Restart the engine
     *
     * e.g. used on heartbeat error or if subscription parameters are changed
     */
    restart(): void;
    /**
     * Erase auth token cookie
     *
     * It is recommended to call this function when login form is displayed to
     * prevent old token caching
     */
    erase_token_cookie(): void;
    /**
     * Load JSON configuration
     *
     * @param config_path {string} config path (default: config.json)
     *
     * @returns Promise object
     */
    load_config(config_path?: string): Promise<EvaConfig>;
    /**
     * Apply configuration from an object
     *
     * @param config {object} configuration object
     */
    apply_config(config: EvaConfig): void;
    api_call({ method, params, serialization_kind }: {
        method: string;
        params?: object | string | Array<string>;
        serialization_kind?: SerializationKind;
    }): Promise<any>;
    /**
     * Call API function
     *
     * Calls any available SFA API function
     *
     * @param method {string} API method
     * @param p1 {object} call parameters. if specified as a string/object, transformed to i=val
     * @param p2 {object} additional call parameters if p1 is a string
     *
     * @returns Promise object
     */
    call(method: string, p1?: object | string | Array<string>, p2?: object, serialization_kind?: SerializationKind): Promise<any>;
    /**
     * Ask server to set the token read-only (e.g. after idle)
     *
     * (EVA ICS 3.3.2+)
     *
     * the current mode can be obtained from $eva.server_info.aci.token_mode
     */
    set_readonly(): Promise<void>;
    /**
     * Ask server to return the token to normal mode
     *
     * (EVA ICS 3.3.2+)
     *
     * @param u {string} login
     * @param p {string} password
     * @param xopts {object} extra options (e.g. OTP)
     */
    set_normal(user?: string, password?: string, xopts?: object): boolean;
    error_handler(err: EvaError, method: string): void;
    /**
     * Set event handler function
     *
     * A single kind of event can have a single handler only
     *
     * @param event {EventKind} engine event kind
     * @param func {function} function called on event
     */
    on(event: EventKind | string, func: (...args: any[]) => void | boolean): void;
    /**
     * Set intervals
     *
     * @param interval_id {IntervalKind} interval kind
     * @param value {number} interval value (in seconds)
     */
    set_interval(interval_id: IntervalKind, value: number): void;
    date_local_to_server(date: Date): Date;
    date_server_to_local(date: Date): Date;
    /**
     * Watch item state updates
     *
     * Registers the function to be called in case of state change event (or at
     * first state load).
     *
     * If state is already loaded, function will be called immediately. One item
     * (or item mask, set with "*" or a traditional OID mask) can have multiple
     * watchers.
     *
     * @param oid {string} item oid (e.g. sensor:env/temp1, sensor:env/\*, sensor:+/temp1)
     * @param func {function} function to be called
     * @param ignore_initial {boolean} skip initial state callback
     * @param prot {boolean} protected (not removed on global unwatch)
     *
     */
    watch(oid: string, func: (state: ItemState) => void, ignore_initial?: boolean, prot?: boolean): void;
    /**
     * Watch action state by uuid
     *
     * Registers the function to be called in case of action status change
     * event (or at first state load).
     *
     * If status is already loaded, function will be called immediately.
     * Otherwise status is polled from the server with "action_watch" interval
     * (default: 500ms).
     *
     * There is no unwatch function as watching is stopped as soon as the
     * action is completed (or server error is occurred)
     *
     * @param uuid {string} action uuid
     * @param func {function} function to be called
     *
     */
    watch_action(uuid: string, func: (result: ActionResult | EvaError) => void): void;
    /**
     * Stop watching item state updates
     *
     * If item oid or function is not specified, all watching functions are
     * removed for a single oid (mask) or for all the items watched.
     *
     * @param oid {string} item OID or a mask
     * @param func {function} function to be removed
     */
    unwatch(oid?: string, func?: (state: ItemState) => void): void;
    _unwatch_func(oid: string, func?: (state: ItemState) => void): void;
    _unwatch_all(oid: string): void;
    _unwatch_mask_func(oid: string, func: (state: ItemState) => void): void;
    _unwatch_mask_all(oid: string): void;
    /**
     * Get item status
     *
     * @param oid {string} item OID
     *
     * @returns item status(int) or undefined if no object found
     */
    status(oid: string): number | null | undefined;
    /**
     * Get item value
     *
     * @param oid {string} item OID
     *
     * @returns item value or undefined if no item found
     */
    value(oid: string): any | undefined;
    /**
     * Get item state
     *
     * @param oid {string} item OID or OID mask
     *
     * @returns state object or undefined if no item found
     */
    state(oid: string): ItemState | Array<ItemState> | undefined;
    _state(oid: string): ItemState;
    _states_by_mask(oid_mask: string): Array<ItemState>;
    /**
     * Stop the engine
     *
     * After calling the function closes open WebSocket if available, stops all
     * workers then tries to close the server session
     *
     * @param keep_auth {boolean} keep authentication cookies and token
     *
     * @returns Promise object
     */
    stop(keep_auth?: boolean, further_restart?: boolean): Promise<void>;
    _inject_evajw(mod: any): boolean;
    _init_block(block: string): void;
    _init_block_states(block: string): void;
    _delete_block(block: string): void;
    _delete_block_states(block: string): void;
    _start_evajw(): void;
    _is_ws_handler_registered(): boolean;
    _clear_watchers(): void;
    _report_cleanup(block: string): void;
    _clear_states(block?: string): void;
    _clear_last_pings(): void;
    _clear(): void;
    _critical(message: any, write_on_screen?: boolean, throw_err?: boolean): void;
    _prepare_api_call(method: string, params?: object): JsonRpcRequest;
    _api_call(method: string, params?: object, serialization_kind?: SerializationKind): Promise<any>;
    _heartbeat(on_login: boolean): Promise<void>;
    _load_log_entries(postprocess: boolean): void;
    _schedule_restart(): void;
    _cancel_scheduled_restart(): void;
    _stop_engine(): void;
    _prepare_call_params(params?: any): object;
    _set_token_cookie(): void;
    _process_loaded_states(data: Array<ItemState>, clear_unavailable: boolean, block: string): void;
    _load_states(state_updates: boolean | Array<string>, block: string): Promise<void>;
    _get_ws_uri(): string;
    _start_ws(state_updates: boolean | Array<string>, block: string): Promise<void>;
    _set_ws_log_level(level: number): void;
    _process_ws_frame_pong(block: string): void;
    _process_ws_frame_log(data: Array<LogRecord> | LogRecord): void;
    _process_ws(payload: string, block: string): void;
    _preprocess_log_record(record: LogRecord): void;
    _clear_state(oid: string, block: string): void;
    _process_state(state: ItemState, is_update: boolean, block: string): void;
    _invoke_handler(handler: EventKind, ...args: any[]): void | boolean;
    _oid_match(oid: string, mask: string): boolean;
    _debug(method: string, ...data: any[]): void;
    parse_svc_message(msg?: string): SvcMessage | null;
    /**
     * OTP setup code
     *
     * @param ctx html <canvas /> element or id to generate QR code in
     * @param secret {string} OTP secret
     * @param params {OTPParams} additional parameters
     *
     * @returns QRious QR object if QR code is generated
     */
    otpQR(ctx: object | string, secret: string, params?: OTPParams): any;
    _deserializePromise: (response: any, serialization_kind: SerializationKind) => Promise<any>;
    /**
     * QR code for EvaHI
     *
     * Generates QR code for :doc:`EvaHI</evahi>`-compatible apps (e.g. for Eva
     * ICS Control Center mobile app for Android). Current engine session
     * must be authorized using user login. If $eva.password is defined, QR
     * code also contain password value. Requires qrious js library.
     *
     * @param ctx html <canvas /> element or id to generate QR code in
     * @param params {HiQRParams} additional parameters
     *
     * @returns QRious QR object if QR code is generated
     */
    hiQR(ctx: object | string, params?: HiQRParams): any;
    /**
     * Registers the global object window.$eva
     */
    register_globals(): void;
    /**
     * Registers global objects + legacy globals
     */
    register_legacy_globals(): void;
}
/**
 * Disable tab freeze
 *
 * @param keep_visible {boolean} keep special elements visible
 */
declare function disableTabFreeze(keep_visible?: boolean): void;
export { Eva, EvaError, EvaErrorKind, EvaStreamParameters, SerializationKind, TokenMode, SessionAuthKind, SessionACI, ACLProp, ACLOp, SessionACL, ServerInfo, LoginState, SessionState, defaultSessionState, EventHandler, EventTopic, EventKind, IntervalKind, ActionResult, ItemState, LogParams, LogRecord, OTPParams, HiQRParams, StateProp, SvcMessage, EvaConfig, EvaEngineConfig, Watcher, disableTabFreeze };