import type { Context, Span } from "../observability/index.js";
export interface ProxyRequestLifecycle {
    end(statusCode: number, error?: Error): void;
}
export interface RunProxyRequestLifecycleOptions {
    req: Request;
    url: URL;
    extractContext(headers: Headers): Context | undefined;
    startServerSpan(method: string, path: string, parentContext?: Context): {
        span: Span;
        context: Context;
    } | null;
    withContext<T>(spanContext: Context, fn: () => Promise<T>): Promise<T>;
    endSpan(span: Span | undefined, statusCode: number, error?: Error): void;
    handle(lifecycle: ProxyRequestLifecycle): Promise<Response>;
}
/** Run a proxied HTTP request with tracing context and exactly-once span finalization. */
export declare function runProxyRequestLifecycle(options: RunProxyRequestLifecycleOptions): Promise<Response>;
//# sourceMappingURL=request-lifecycle.d.ts.map