import Joi from 'joi';
import { RoomEvent, StateEvent, ToDeviceMessageEvent } from '../types';
/**
 * The type of the power levels state event.
 */
export declare const STATE_EVENT_POWER_LEVELS = "m.room.power_levels";
/**
 * The types of type of the create event.
 */
export declare const STATE_EVENT_CREATE = "m.room.create";
/**
 * Check if the given event is a {@link StateEvent}.
 *
 * @param event - An event that is either a {@link RoomEvent} or a {@link StateEvent}.
 * @returns True, if the event is a {@link StateEvent}.
 */
export declare function isStateEvent(event: RoomEvent | StateEvent): event is StateEvent;
/**
 * Check if the given event is a {@link RoomEvent}.
 *
 * @param event - An event that is either a {@link RoomEvent} or a {@link StateEvent}.
 * @returns True, if the event is a {@link RoomEvent}.
 */
export declare function isRoomEvent(event: RoomEvent | StateEvent): event is RoomEvent;
/**
 * Check if the given value is a valid {@link RoomEvent}.
 *
 * @param event - The value to check
 * @returns true if value is a valid room event, else false.
 */
export declare function isValidRoomEvent(event: unknown): event is RoomEvent<any>;
/**
 * Check if the given value is a valid {@link StateEvent}.
 *
 * @param event - The value to check
 * @returns true if value is a valid state event, else false.
 */
export declare function isValidStateEvent(event: unknown): event is StateEvent<any>;
/**
 * Check if the given value is a valid {@link ToDeviceMessageEvent}.
 *
 * @param event - The value to check
 * @returns true if value is a valid to device message, else false.
 */
export declare function isValidToDeviceMessageEvent(event: unknown): event is ToDeviceMessageEvent<any>;
export declare const roomEventSchema: Joi.ObjectSchema<RoomEvent>;
export declare const stateEventSchema: Joi.ObjectSchema<StateEvent>;
export declare const toDeviceMessageSchema: Joi.ObjectSchema<ToDeviceMessageEvent>;
export type StateEventCreateContent = {
    room_version?: string;
    creator?: string;
    additional_creators?: string[];
    type?: string;
};
export declare const createEventSchema: Joi.ObjectSchema<StateEvent<StateEventCreateContent>>;
/**
 * Validates that `event` is has a valid structure for a
 * {@link StateEventCreateContent}.
 * @param event - The event to validate.
 * @returns True, if the event is valid.
 */
export declare function isValidCreateEventSchema(event: StateEvent<unknown> | undefined): event is StateEvent<StateEventCreateContent>;
/**
 * The types of actions.
 */
export type PowerLevelsActions = 'invite' | 'kick' | 'ban' | 'redact';
/**
 * The content of an `m.room.power_levels` event.
 */
export type PowerLevelsStateEvent = {
    events?: {
        [key: string]: number;
    };
    state_default?: number;
    events_default?: number;
    users?: {
        [key: string]: number;
    };
    users_default?: number;
    ban?: number;
    invite?: number;
    kick?: number;
    redact?: number;
};
export declare const powerLevelsEventSchema: Joi.ObjectSchema<StateEvent<PowerLevelsStateEvent>>;
/**
 * Validates that `event` is has a valid structure for a
 * {@link PowerLevelsStateEvent}.
 * @param event - The event to validate.
 * @returns True, if the event is valid.
 */
export declare function isValidPowerLevelStateEvent(event: StateEvent<unknown>): event is StateEvent<PowerLevelsStateEvent>;