/**
 * Header Event Factory
 * Creates and emits header-related events with type safety
 */
import type { HeadersChangedEvent, HeadersEnrichedEvent, HeadersConflictEvent, HeadersOverrideEvent, HeadersMergedEvent, HeadersFilteredEvent, HeadersCachedEvent, HeadersCacheHitEvent, HeadersCacheMissEvent, ApiHeaders, EventOptions, EmitConflictOptions, EmitChangedOptions, EmitEnrichedOptions, EmitOverrideOptions, EmitMergedOptions, EmitFilteredOptions, EmitCachedOptions } from '@plyaz/types/api';
import { BaseEventFactory } from './base';
/**
 * Factory for creating header events
 */
import type { EventEmitter } from '../../pubsub';
export declare class HeaderEventFactory extends BaseEventFactory<'headers'> {
    constructor(emitter: EventEmitter);
    /**
     * Create and emit a headers changed event
     */
    emitChanged(options: EmitChangedOptions): HeadersChangedEvent;
    /**
     * Create and emit a headers enriched event
     */
    emitEnriched(options: EmitEnrichedOptions): HeadersEnrichedEvent;
    /**
     * Create and emit a headers conflict event
     */
    emitConflict(options: EmitConflictOptions): HeadersConflictEvent;
    /**
     * Create and emit a headers override event
     */
    emitOverride(options: EmitOverrideOptions): HeadersOverrideEvent;
    /**
     * Create and emit a headers merged event
     */
    emitMerged(options: EmitMergedOptions): HeadersMergedEvent;
    /**
     * Create and emit a headers filtered event
     */
    emitFiltered(options: EmitFilteredOptions): HeadersFilteredEvent;
    /**
     * Create and emit a headers cached event
     */
    emitCached(options: EmitCachedOptions): HeadersCachedEvent;
    /**
     * Create and emit a headers cache hit event
     */
    emitCacheHit(key: string, headers: ApiHeaders, options?: EventOptions): HeadersCacheHitEvent;
    /**
     * Create and emit a headers cache miss event
     */
    emitCacheMiss(key: string, options?: EventOptions): HeadersCacheMissEvent;
    /**
     * Detect changes between two header sets
     */
    private detectChanges;
}
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