/** A request the stubbed fetch received. */
export interface RecordedRequest {
    url: URL;
    headers: Headers;
    body: string;
}
/**
 * Test helper: stubs the global fetch so a test can inspect the requests the
 * SDK builds, offline. Every call answers 200 with `responseBody` as JSON, or
 * with what `responseBody(url)` returns when it is a function. Requests to
 * localhost, an MCP server under test, reach it unrecorded.
 * Undo it with `vi.unstubAllGlobals()`.
 */
export declare function recordFetch(responseBody?: unknown | ((url: string) => unknown)): RecordedRequest[];
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