/**
 * Configuration Builder
 * Handles merging and building configurations with proper precedence
 */
import type { ApiConfig } from '@plyaz/types/api';
/**
 * Configuration builder class
 * Provides a fluent API for building configurations
 */
export declare class ConfigBuilder {
    private config;
    /**
     * Set the base configuration
     */
    base(config: ApiConfig): this;
    /**
     * Add a configuration layer
     */
    with(config: Partial<ApiConfig>): this;
    /**
     * Add request interceptor(s)
     */
    onRequest(interceptor: ApiConfig['onRequest']): this;
    /**
     * Add response interceptor(s)
     */
    onResponse(interceptor: ApiConfig['onResponse']): this;
    /**
     * Add error interceptor(s)
     */
    onError(interceptor: ApiConfig['onError']): this;
    /**
     * Set retry configuration
     */
    retry(config: ApiConfig['retry']): this;
    /**
     * Set cache configuration
     */
    cache(config: ApiConfig['cache']): this;
    /**
     * Check if polling config should be merged
     */
    private shouldMergePolling;
    /**
     * Set polling configuration
     */
    polling(config: ApiConfig['polling']): this;
    /**
     * Build the final configuration
     */
    build(): ApiConfig;
}
/**
 * Create a new configuration builder
 */
export declare function createConfigBuilder(base?: ApiConfig): ConfigBuilder;
/**
 * Merge multiple configurations
 * Priority: left to right (later configs override earlier ones)
 */
export declare function mergeConfigs(...configs: Partial<ApiConfig>[]): ApiConfig;
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