/**
 * Transport abstraction layer for event emission
 *
 * Provides configurable transport mechanisms for emitting telemetry events.
 * All transports implement silent failure to prevent SDK disruption.
 */
export interface EventTransport {
    emit<T extends any>(subject: string, event: T): Promise<void>;
    close?(): Promise<void>;
}
export interface TransportConfig {
    type: "http" | "console" | "noop";
    endpoint?: string;
    headers?: Record<string, string>;
    retryAttempts?: number;
    retryDelayMs?: number;
}
export declare function createHttpTransport(config: {
    endpoint: string;
    headers?: Record<string, string>;
    retryAttempts?: number;
    retryDelayMs?: number;
}): EventTransport;
export declare function createConsoleTransport(): EventTransport;
export declare function createNoopTransport(): EventTransport;
export declare function createTransport(config: TransportConfig): EventTransport;
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