/**
 * @nahisaho/musubix-codegraph - Event System
 *
 * Type-safe event emitter for CodeGraph events
 *
 * @packageDocumentation
 * @module @nahisaho/musubix-codegraph/events
 *
 * @see REQ-CG-API-006
 * @see DES-CG-001
 */
import type { CodeGraphEvents } from '../types.js';
/**
 * Type-safe event emitter for CodeGraph
 *
 * @example
 * ```typescript
 * const emitter = new TypedEventEmitter<CodeGraphEvents>();
 *
 * emitter.on('indexing:progress', (data) => {
 *   console.log(`Progress: ${data.processed}/${data.total}`);
 * });
 *
 * emitter.emit('indexing:progress', { processed: 10, total: 100, currentFile: 'src/index.ts' });
 * ```
 */
export declare class TypedEventEmitter<TEvents extends Record<string, unknown>> {
    private emitter;
    constructor();
    /**
     * Register an event listener
     */
    on<K extends keyof TEvents>(event: K, listener: (data: TEvents[K]) => void): this;
    /**
     * Register a one-time event listener
     */
    once<K extends keyof TEvents>(event: K, listener: (data: TEvents[K]) => void): this;
    /**
     * Remove an event listener
     */
    off<K extends keyof TEvents>(event: K, listener: (data: TEvents[K]) => void): this;
    /**
     * Remove all listeners for an event
     */
    removeAllListeners<K extends keyof TEvents>(event?: K): this;
    /**
     * Emit an event
     */
    emit<K extends keyof TEvents>(event: K, data: TEvents[K]): boolean;
    /**
     * Get listener count for an event
     */
    listenerCount<K extends keyof TEvents>(event: K): number;
    /**
     * Get all listeners for an event
     */
    listeners<K extends keyof TEvents>(event: K): ((data: TEvents[K]) => void)[];
    /**
     * Wait for an event (Promise-based)
     */
    waitFor<K extends keyof TEvents>(event: K, timeout?: number): Promise<TEvents[K]>;
}
/**
 * CodeGraph event emitter with pre-defined event types
 */
export declare class CodeGraphEventEmitter extends TypedEventEmitter<CodeGraphEvents> {
    /**
     * Emit indexing start event
     */
    emitIndexingStart(path: string): void;
    /**
     * Emit indexing progress event
     */
    emitIndexingProgress(processed: number, total: number, currentFile: string): void;
    /**
     * Emit indexing complete event
     */
    emitIndexingComplete(result: CodeGraphEvents['indexing:complete']): void;
    /**
     * Emit indexing error event
     */
    emitIndexingError(error: Error, file?: string): void;
    /**
     * Emit query start event
     */
    emitQueryStart(query: CodeGraphEvents['query:start']['query']): void;
    /**
     * Emit query complete event
     */
    emitQueryComplete(result: CodeGraphEvents['query:complete']['result'], durationMs: number): void;
}
export declare function createEventEmitter(): CodeGraphEventEmitter;
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