/**
 * Stdin utilities for Claude Code hooks.
 */
export interface IHookInput {
    trigger?: 'startup' | 'resume' | 'compact' | 'clear';
    session_type?: 'startup' | 'resume' | 'compact' | 'clear';
}
/**
 * Read hook input from stdin (JSON with trigger type and session info).
 * Times out after 100ms if no input (for manual testing).
 */
export declare function readStdin(): Promise<IHookInput>;
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