/**
 * Request-scoped peer-sharing context and the counters the rate gates read.
 *
 * The grant serving a borrowed request has to be visible deep inside the routing
 * path — account selection filters on it, and settlement bills against it — but
 * threading it through every call site of a 9,000-line route module would touch
 * everything and be wrong the first time someone added a code path. An
 * `AsyncLocalStorage` scope is the narrower change: the gate establishes it once
 * per request, and anything downstream in the same async chain (including the
 * `.then()` that settles a finished stream) can ask for it.
 *
 * Requests without a grant — the node's own client on loopback — run with no
 * context at all, so `getShareContext()` returning `undefined` is the normal,
 * hot case and means "this is my own traffic".
 *
 * @module proxy/shareContext
 */
import type { ProxyShareRequestContext } from "../types/index.js";
/** Read the counters a policy evaluation needs, without mutating them. */
export declare function readShareCounters(grantId: string, now?: number): {
    requestsInLastMinute: number;
    inFlight: number;
};
/**
 * Claim a concurrency slot and record the request against the rate window.
 * Returns the release function; it is idempotent because a request can end more
 * than one way (normal return, thrown error, client disconnect) and double
 * release would let a grant exceed its concurrency ceiling.
 */
export declare function acquireShareSlot(grantId: string, now?: number): () => void;
/** Run `fn` with the grant visible to everything downstream. */
export declare function runWithShareContext<T>(context: ProxyShareRequestContext, fn: () => T): T;
/** The grant serving the current request, or undefined for the node's own traffic. */
export declare function getShareContext(): ProxyShareRequestContext | undefined;
/** True when the current request is borrowed rather than the node's own. */
export declare function isBorrowedRequest(): boolean;
/** Drop all counters. Test isolation only. */
export declare function resetShareCountersForTests(): void;