export type ReadOnlyRemoteScrollDirection = 'up' | 'down';
export interface ReadOnlyRemoteScrollPayload {
    readonly direction: ReadOnlyRemoteScrollDirection;
    readonly eventCount: number;
}
export declare function parseReadOnlyRemoteScrollPayload(data: string): ReadOnlyRemoteScrollPayload | null;
export declare const READ_ONLY_REMOTE_SCROLL_SESSION_BUDGET = 12;
export declare const READ_ONLY_REMOTE_SCROLL_WINDOW_MS = 1000;
export interface ReadOnlyRemoteScrollLimiterOptions {
    readonly budget: number;
    readonly windowMs: number;
}
/**
 * Session-scoped fixed-window limiter for read-only remote scroll events.
 * One instance is shared by every read-only WebSocket client of a session,
 * so the budget aggregates across sockets. The window resets on the first
 * consumption after it expires; excess events are dropped, never queued.
 */
export declare class ReadOnlyRemoteScrollLimiter {
    private readonly options;
    private readonly nowMs;
    private usedEvents;
    private windowStartMs;
    constructor(options: ReadOnlyRemoteScrollLimiterOptions, nowMs?: () => number);
    tryConsume(eventCount: number): boolean;
}
//# sourceMappingURL=web-terminal-scroll.d.ts.map