export type ProcessInfo = {
    pid: number;
    name: string;
    command: string;
    cpu: number;
    mem: number;
    started: string;
};
export type ProcessSnapshot = {
    ts: number;
    activeApp: string;
    activeWindowTitle: string;
    processes: ProcessInfo[];
};
export type ProcessChanges = {
    newProcesses: ProcessInfo[];
    exitedProcesses: ProcessInfo[];
    appSwitch: {
        from: string;
        to: string;
    } | null;
    highCpu: ProcessInfo[];
};
/**
 * Capture a snapshot of running processes and the active window on macOS.
 * Returns a default empty snapshot on non-macOS platforms or on error.
 */
export declare function captureProcesses(): Promise<ProcessSnapshot>;
/**
 * Compute changes between two successive process snapshots.
 */
export declare function processChanges(prev: ProcessSnapshot, curr: ProcessSnapshot): ProcessChanges;