import FormData from 'form-data';
import type { AscDesc, ChannelFilters, ChannelQueryOptions, ChannelSort, ChannelSortBase, LocalMessage, LocalMessageBase, Logger, Message, MessagePaginationOptions, MessageResponse, MessageResponseBase, MessageSet, OwnUserResponse, PromoteChannelParams, ReactionGroupResponse, UpdatedMessage, UserResponse } from './types';
import type { StreamChat } from './client';
import type { Channel } from './channel';
import type { AxiosRequestConfig } from 'axios';
/**
 * logChatPromiseExecution - utility function for logging the execution of a promise..
 *  use this when you want to run the promise and handle errors by logging a warning
 *
 * @param {Promise<T>} promise The promise you want to run and log
 * @param {string} name    A descriptive name of what the promise does for log output
 *
 */
export declare function logChatPromiseExecution<T>(promise: Promise<T>, name: string): void;
export declare const sleep: (m: number) => Promise<void>;
export declare function isFunction(value: unknown): value is (...args: unknown[]) => unknown;
export declare const chatCodes: {
    TOKEN_EXPIRED: number;
    WS_CLOSED_SUCCESS: number;
};
export declare function isOwnUser(user?: OwnUserResponse | UserResponse): user is OwnUserResponse;
export declare function isOwnUserBaseProperty(property: string): boolean;
export declare function addFileToFormData(uri: string | NodeJS.ReadableStream | Buffer | File, name?: string, contentType?: string): FormData;
export declare function normalizeQuerySort<T extends Record<string, AscDesc | undefined>>(sort: T | T[]): {
    direction: AscDesc;
    field: keyof T;
}[];
/**
 * retryInterval - A retry interval which increases acc to number of failures
 *
 * @return {number} Duration to wait in milliseconds
 */
export declare function retryInterval(numberOfFailures: number): number;
export declare function randomId(): string;
export declare function generateUUIDv4(): string;
export declare function convertErrorToJson(err: Error): Record<string, unknown>;
/**
 * isOnline safely return the navigator.online value for browser env
 * if navigator is not in global object, it always return true
 */
export declare function isOnline(): boolean;
/**
 * listenForConnectionChanges - Adds an event listener fired on browser going online or offline
 */
export declare function addConnectionEventListeners(cb: (e: Event) => void): void;
export declare function removeConnectionEventListeners(cb: (e: Event) => void): void;
export declare const axiosParamsSerializer: AxiosRequestConfig['paramsSerializer'];
/**
 * Takes the message object, parses the dates, sets `__html`
 * and sets the status to `received` if missing; returns a new LocalMessage object.
 *
 * @param {LocalMessage} message `LocalMessage` object
 */
export declare function formatMessage(message: MessageResponse | MessageResponseBase | LocalMessage): LocalMessage;
/**
 * @private
 *
 * Takes a LocalMessage, parses the dates back to strings,
 * and converts the message back to a MessageResponse.
 *
 * @param {MessageResponse} message `MessageResponse` object
 */
export declare function unformatMessage(message: LocalMessage): MessageResponse;
export declare const localMessageToNewMessagePayload: (localMessage: LocalMessage) => Message;
export declare const toUpdatedMessagePayload: (message: LocalMessage | Partial<MessageResponse>) => UpdatedMessage;
export declare const toDeletedMessage: ({ message, deletedAt, hardDelete, }: {
    message: LocalMessage | LocalMessageBase;
    deletedAt: LocalMessage["deleted_at"];
    hardDelete: boolean;
}) => {
    attachments: never[];
    cid: string | undefined;
    created_at: Date;
    deleted_at: Date | null;
    id: string;
    latest_reactions: never[];
    mentioned_users: never[];
    own_reactions: never[];
    parent_id: string | undefined;
    reply_count: number | undefined;
    status: string;
    thread_participants: UserResponse[] | undefined;
    type: "deleted";
    updated_at: Date;
    user: UserResponse | null | undefined;
} | {
    attachments: never[];
    type: string;
    deleted_at: Date | null;
    text?: string | undefined;
    user_id?: string | undefined;
    command?: string | undefined;
    mentioned_users?: UserResponse[] | undefined;
    latest_reactions?: import("./types").ReactionResponse[] | undefined;
    own_reactions?: import("./types").ReactionResponse[] | null | undefined;
    reaction_counts?: {
        [key: string]: number;
    } | null | undefined;
    reply_count?: number | undefined;
    i18n?: (import("./types").RequireAtLeastOne<Record<`${import("./types").TranslationLanguages}_text`, string>> & {
        language: import("./types").TranslationLanguages;
    }) | undefined;
    html?: string | undefined;
    user?: (UserResponse | null) | undefined;
    id: string;
    mml?: string | undefined;
    parent_id?: string | undefined;
    pin_expires?: string | null | undefined;
    pinned?: boolean | undefined;
    poll_id?: string | undefined;
    quoted_message_id?: string | undefined;
    restricted_visibility?: string[] | undefined;
    show_in_channel?: boolean | undefined;
    silent?: boolean | undefined;
    args?: string | undefined;
    before_message_send_failed?: boolean | undefined;
    channel?: import("./types").ChannelResponse | undefined;
    cid?: string | undefined;
    command_info?: {
        name?: string;
    } | undefined;
    deleted_reply_count?: number | undefined;
    member?: import("./types").ChannelMemberResponse | undefined;
    mentioned_channel?: boolean | undefined;
    mentioned_here?: boolean | undefined;
    mentioned_roles?: string[] | undefined;
    message_text_updated_at?: string | undefined;
    moderation?: import("./types").ModerationResponse | undefined;
    moderation_details?: import("./types").ModerationDetailsResponse | undefined;
    pinned_by?: (UserResponse | null) | undefined;
    poll?: import("./types").PollResponse | undefined;
    reaction_groups?: {
        [key: string]: ReactionGroupResponse;
    } | null | undefined;
    reaction_scores?: {
        [key: string]: number;
    } | null | undefined;
    reminder?: import("./types").ReminderResponseBase | undefined;
    shadowed?: boolean | undefined;
    shared_location?: import("./types").SharedLocationResponse | undefined;
    thread_participants?: UserResponse[] | undefined;
    deleted_for_me?: boolean | undefined;
    created_at: Date;
    pinned_at: Date | null;
    status: string;
    updated_at: Date;
    error?: import("./types").ErrorFromResponse<import("./types").APIErrorResponse> | null;
    quoted_message?: LocalMessageBase | null;
};
export declare const deleteUserMessages: ({ messages, user, hardDelete, deletedAt, }: {
    messages: Array<LocalMessage>;
    user: UserResponse;
    hardDelete: boolean;
    deletedAt: LocalMessage["deleted_at"];
}) => void;
export declare const findIndexInSortedArray: <T, L>({ needle, sortedArray, selectKey, selectValueToCompare, sortDirection, }: {
    needle: T;
    sortedArray: readonly T[];
    /**
     * In an array of objects (like messages), pick a unique property identifying
     * an element. It will be used to find a direct match for the needle element
     * in case compare values are not unique.
     *
     * @example
     * ```ts
     * selectKey: (message) => message.id
     * ```
     */
    selectKey?: (arrayElement: T) => string;
    /**
     * In an array of objects (like messages), pick a specific
     * property to compare the needle value to.
     *
     * @example
     * ```ts
     * selectValueToCompare: (message) => message.created_at.getTime()
     * ```
     */
    selectValueToCompare?: (arrayElement: T) => L | T;
    /**
     * @default ascending
     * @description
     * ```md
     * ascending  - [1,2,3,4,5...]
     * descending - [...5,4,3,2,1]
     * ```
     */
    sortDirection?: "ascending" | "descending";
}) => number;
export declare function addToMessageList<T extends LocalMessage>(messages: readonly T[], newMessage: T, timestampChanged?: boolean, sortBy?: 'pinned_at' | 'created_at', addIfDoesNotExist?: boolean): T[];
export interface DebouncedFunc<T extends (...args: any[]) => any> {
    /**
     * Call the original function, but applying the debounce rules.
     *
     * If the debounced function can be run immediately, this calls it and returns its return
     * value.
     *
     * Otherwise, it returns the return value of the last invocation, or undefined if the debounced
     * function was not invoked yet.
     */
    (...args: Parameters<T>): ReturnType<T> | undefined;
    /**
     * Throw away any pending invocation of the debounced function.
     */
    cancel(): void;
    /**
     * If there is a pending invocation of the debounced function, invoke it immediately and return
     * its return value.
     *
     * Otherwise, return the value from the last invocation, or undefined if the debounced function
     * was never invoked.
     */
    flush(): ReturnType<T> | undefined;
}
export declare const debounce: <T extends (...args: any[]) => any>(fn: T, timeout?: number, { leading, trailing }?: {
    leading?: boolean;
    trailing?: boolean;
}) => DebouncedFunc<T>;
export declare const throttle: <T extends (...args: any[]) => any>(fn: T, timeout?: number, { leading, trailing }?: {
    leading?: boolean;
    trailing?: boolean;
}) => (...args: Parameters<T>) => void;
export declare const uniqBy: <T>(array: T[] | unknown, iteratee: ((item: T) => unknown) | keyof T) => T[];
type MessagePaginationUpdatedParams = {
    parentSet: MessageSet;
    requestedPageSize: number;
    returnedPage: MessageResponse[];
    filteredReturnedPage: MessageResponse[];
    logger?: Logger;
    messagePaginationOptions?: MessagePaginationOptions;
};
export declare function binarySearchByDateEqualOrNearestGreater(array: {
    created_at?: string;
}[], targetDate: Date): number;
export declare const messageSetPagination: (params: MessagePaginationUpdatedParams) => {
    hasNext: boolean;
    hasPrev: boolean;
};
type GetChannelParams = {
    client: StreamChat;
    channel?: Channel;
    id?: string;
    members?: string[];
    options?: ChannelQueryOptions;
    type?: string;
};
/**
 * Calls channel.watch() if it was not already recently called. Waits for watch promise to resolve even if it was invoked previously.
 * If the channel is not passed as a property, it will get it either by its channel.cid or by its members list and do the same.
 * @param client
 * @param members
 * @param options
 * @param type
 * @param id
 * @param channel
 */
export declare const getAndWatchChannel: ({ channel, client, id, members, options, type, }: GetChannelParams) => Promise<Channel>;
/**
 * Generates a temporary channel.cid for channels created without ID, as they need to be referenced
 * by an identifier until the back-end generates the final ID. The cid is generated by its member IDs
 * which are sorted and can be recreated the same every time given the same arguments.
 * @param channelType
 * @param members
 */
export declare const generateChannelTempCid: (channelType: string, members: string[]) => string | undefined;
/**
 * Checks if a channel is pinned or not. Will return true only if channel.state.membership.pinned_at exists.
 * @param channel
 */
export declare const isChannelPinned: (channel: Channel) => boolean;
/**
 * Checks if a channel is archived or not. Will return true only if channel.state.membership.archived_at exists.
 * @param channel
 */
export declare const isChannelArchived: (channel: Channel) => boolean;
/**
 * A utility that tells us whether we should consider archived channels or not based
 * on filters. Will return true only if filters.archived exists and is a boolean value.
 * @param filters
 */
export declare const shouldConsiderArchivedChannels: (filters: ChannelFilters) => boolean;
/**
 * Extracts the value of the sort parameter at a given index, for a targeted key. Can
 * handle both array and object versions of sort. Will return null if the index/key
 * combination does not exist.
 * @param atIndex - the index at which we'll examine the sort value, if it's an array one
 * @param sort - the sort value - both array and object notations are accepted
 * @param targetKey - the target key which needs to exist for the sort at a certain index
 */
export declare const extractSortValue: ({ atIndex, sort, targetKey, }: {
    atIndex: number;
    targetKey: keyof ChannelSortBase;
    sort?: ChannelSort;
}) => AscDesc | null;
/**
 * Returns true only if `{ pinned_at: -1 }` or `{ pinned_at: 1 }` option is first within the `sort` array.
 */
export declare const shouldConsiderPinnedChannels: (sort: ChannelSort) => boolean;
/**
 * Checks whether the sort value of type object contains a pinned_at value or if
 * an array sort value type has the first value be an object containing pinned_at.
 * @param sort
 */
export declare const findPinnedAtSortOrder: ({ sort }: {
    sort: ChannelSort;
}) => AscDesc | null;
/**
 * Finds the index of the last consecutively pinned channel, starting from the start of the
 * array. Will not consider any pinned channels after the contiguous subsequence at the
 * start of the array.
 * @param channels
 */
export declare const findLastPinnedChannelIndex: ({ channels }: {
    channels: Channel[];
}) => number | null;
/**
 * A utility used to move a channel towards the beginning of a list of channels (promote it to a higher position). It
 * considers pinned channels in the process if needed and makes sure to only update the list reference if the list
 * should actually change. It will try to move the channel as high as it can within the list.
 * @param channels - the list of channels we want to modify
 * @param channelToMove - the channel we want to promote
 * @param channelToMoveIndexWithinChannels - optionally, the index of the channel we want to move if we know it (will skip a manual check)
 * @param sort - the sort value used to check for pinned channels
 */
export declare const promoteChannel: ({ channels, channelToMove, channelToMoveIndexWithinChannels, sort, }: PromoteChannelParams) => Channel[];
export declare const isDate: (value: unknown) => value is Date;
export declare const isLocalMessage: (message: unknown) => message is LocalMessage;
export declare const runDetached: <T>(callback: Promise<void | T>, options?: {
    context?: string;
    onSuccessCallback?: (res: T | void) => void | Promise<void>;
    onErrorCallback?: (error: Error) => void | Promise<void>;
}) => void;
export declare const isBlockedMessage: (message: LocalMessage) => boolean;
export declare const isBouncedMessage: (message: LocalMessage) => boolean;
export {};