export type ClientRuntime = {
    runtime: 'cloudflare-workers' | 'fastly-compute' | 'vercel-edge' | 'deno-deploy' | 'deno' | 'bun' | 'node' | 'browser' | 'unknown';
    runtimeVersion?: string;
    provider?: 'vercel' | 'aws-lambda' | 'cloud-run' | 'netlify';
};
export declare const getClientRuntime: () => ClientRuntime;
export declare const formatClientRuntimeHeader: (info?: ClientRuntime) => string;