import type { SqlClient, TraceEvent } from "./types.js";
/**
 * Opt-in tracing for `PgFileSystemOptions.trace`. Nothing here runs unless a
 * sink is configured: the constructor only wraps the client and the public
 * methods when one is.
 *
 * Op attribution rides an `AsyncLocalStorage` frame rather than a per-call
 * view object, so concurrent calls on one instance stay apart without
 * splitting the instance's caches (a view would re-resolve the version id and
 * change the very query counts being measured).
 */
type TraceSink = (event: TraceEvent) => void;
export declare function traceSqlClient(inner: SqlClient, sink: TraceSink, inTransaction?: boolean): SqlClient;
/**
 * Shadow each traced public method with an own-property wrapper that opens an
 * op frame for the duration of the call. Methods returning a non-promise
 * (async iterators such as `diffStream`) pass through untraced.
 */
export declare function traceMethods(target: object, sink: TraceSink): void;
export {};
//# sourceMappingURL=trace.d.ts.map