/**
 * @oxpulse/chat-widget — Typing indicator (#120).
 *
 * Renders an animated "X is typing…" footer in the message list.
 * Driven by onTyping SSE events via the SDK subscribe() callback.
 *
 * Zero-third-party-dep — plain DOM + CSS animation, matching the
 * widget's existing pattern (avatar.ts, role-badge.ts, etc.).
 *
 * Lifecycle:
 *   1. onTyping({ userId, ttlSecs }) → addTyping(userId, ttlSecs)
 *   2. A per-user timer auto-removes the user after ttlSecs (server TTL fallback)
 *   3. removeTyping(userId) — explicit clear (on send / on typing:stop)
 *   4. destroy() — clears all timers + removes the DOM element
 *
 * Display rules (industry-standard, from Stream/ravex):
 *   - 1 user:  "Alice is typing…"
 *   - 2 users: "Alice and Bob are typing…"
 *   - 3+ users: "Alice, Bob and 3 others are typing…"
 *   - Self typing is never shown (filtered by selfUid)
 */
export interface TypingIndicatorOptions {
    /** Container element to mount the indicator into. */
    container: HTMLElement;
    /** BCP-47 tag or resolved Locale. */
    lang?: string;
    /** The current user's ID — own typing is never displayed. */
    selfUid: string;
    /** Optional AbortSignal — destroy() is called automatically on abort. */
    signal?: AbortSignal;
    /** Optional: resolve userId → display name (from roster). Falls back to userId. */
    resolveName?: (userId: string) => string | undefined;
}
export declare class TypingIndicator {
    #private;
    constructor(opts: TypingIndicatorOptions);
    /**
     * Mark a user as typing. Resets their auto-clear timer.
     * Self-typing is ignored (never show own indicator).
     */
    addTyping(userId: string, ttlSecs?: number): void;
    /** Remove a user from the typing set. */
    removeTyping(userId: string): void;
    /** Clear all typing users (e.g. on room switch). */
    clearAll(): void;
    destroy(): void;
}
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