export declare const ORIGIN_PROBE_TIMEOUT_MS = 4000;
export type OriginProbeResult = {
    /** Whether ANY HTTP response came back from the origin within the budget. */
    originReachable: boolean;
    /** The HTTP status of the response, or null when no response arrived. */
    probeStatus: number | null;
    /** Wall-clock time the probe took to settle, in milliseconds. */
    probeDurationMs: number;
};
export type ProbeOriginArgs = {
    /** The origin to probe, e.g. `https://webview.dynamicauth.com`. */
    origin: string;
    /** Max time (ms) to wait for a response before aborting the probe. */
    timeoutMs: number;
};
/**
 * Diagnostics-only reachability probe: issues a HEAD request against the
 * webview origin and reports whether ANY HTTP response came back. A response
 * with any status proves the origin is network-reachable from this device
 * (CORS does not apply to reachability signaling in React Native); a
 * rejection or timeout means it is not. Never throws.
 */
export declare const probeOrigin: ({ origin, timeoutMs, }: ProbeOriginArgs) => Promise<OriginProbeResult>;