type LatencyTestStatus = "ok" | "syncing" | "wrong_bytecode" | "timeout" | "http_error" | "rpc_error" | "network_error";
export interface LatencyTestResult {
    url: string;
    latency: number;
    status: LatencyTestStatus;
    error?: string;
}
type LoggerFn = (level: "debug" | "info" | "warn" | "error", message: string, ...optionalParams: any[]) => void;
export declare class LatencyTester {
    private timeoutMs;
    private log;
    constructor(timeoutMs?: number, logger?: LoggerFn);
    private _makeRpcCall;
    /**
     * Tests latency, sync status, and Permit2 bytecode for a single RPC URL.
     * Returns a detailed result object.
     */
    private testSingleRpc;
    /**
     * Tests a list of RPC URLs concurrently and returns a map of URL to detailed results.
     */
    testRpcUrls(urls: string[]): Promise<Record<string, LatencyTestResult>>;
}
export {};
//# sourceMappingURL=latency-tester.d.ts.map