import type { ClientMessage, PresenceMember } from '../types.js';
/** Presence API for a channel */
export declare class Presence {
    private channelName;
    private sendFn;
    private enterListeners;
    private leaveListeners;
    private updateListeners;
    private membersListeners;
    constructor(channelName: string, sendFn: (msg: ClientMessage) => void);
    /**
     * Enter the presence set with optional custom state data.
     *
     * @param data - Optional key/value state to associate with this member
     * @returns `this` for chaining
     */
    enter(data?: Record<string, unknown>): this;
    /**
     * Leave the presence set.
     *
     * @returns `this` for chaining
     */
    leave(): this;
    /**
     * Update your presence state data.
     *
     * @param data - New key/value state to associate with this member
     * @returns `this` for chaining
     */
    update(data: Record<string, unknown>): this;
    /**
     * Request the current member list for this channel.
     * Listen for the result with {@link onMembers}.
     *
     * @returns `this` for chaining
     */
    get(): this;
    /**
     * Listen for members entering the presence set.
     *
     * @param cb - Called with the entering member's data
     * @returns `this` for chaining
     */
    onEnter(cb: (member: PresenceMember) => void): this;
    /**
     * Listen for members leaving the presence set.
     *
     * @param cb - Called with the leaving member's data
     * @returns `this` for chaining
     */
    onLeave(cb: (member: PresenceMember) => void): this;
    /**
     * Listen for presence state updates from members.
     *
     * @param cb - Called with the updated member's data
     * @returns `this` for chaining
     */
    onUpdate(cb: (member: PresenceMember) => void): this;
    /**
     * Listen for the current member list (response to {@link get}).
     *
     * @param cb - Called with the full list of present members
     * @returns `this` for chaining
     */
    onMembers(cb: (members: PresenceMember[]) => void): this;
    /** @internal */
    _emitEnter(member: PresenceMember): void;
    /** @internal */
    _emitLeave(member: PresenceMember): void;
    /** @internal */
    _emitUpdate(member: PresenceMember): void;
    /** @internal */
    _emitMembers(members: PresenceMember[]): void;
}
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