import { type ProcessPort } from '../platform/process.js';
interface ActiveSessionsResult {
    /** Number of likely-active claude sessions that aren't this process. */
    count: number;
    /** Why we returned 0 (only set when 0 and we couldn't really check). */
    unsupportedReason?: 'windows' | 'ps-unavailable' | 'no-real-claude';
}
/**
 * Count Claude Code sessions currently running on this machine.
 *
 * `realClaudePath` is the path to the actual claude binary (from
 * findClaudeBinary). We use it to filter out our own wrapper invocations
 * and only count true claude REPL/spawn instances.
 *
 * `selfPid` is the current process pid, excluded from the count.
 */
export declare function countActiveClaudeSessions(realClaudePath: string | null, selfPid?: number, deps?: {
    process?: ProcessPort;
}): ActiveSessionsResult;
/**
 * One-line, terminal-friendly warning string for use right before a switch.
 * Returns null when there's nothing to warn about (count === 0).
 *
 * Kept separate from the detector so the menu can render it as `p.note`
 * while the CLI prints it on stderr.
 */
export declare function buildActiveSessionsWarning(count: number): string | null;
export {};