/** Heuristic: is this error a transient network/connection blip worth one retry? */
export declare function isTransientNetworkError(err: unknown): boolean;
/**
 * Run `fn`; on a transient network error, wait `delayMs` and try once more.
 * `label` is used only for debug logging. Non-transient errors throw immediately.
 */
export declare function withRetry<T>(fn: () => Promise<T>, label?: string, delayMs?: number): Promise<T>;
/**
 * Variant for Supabase query builders that RESOLVE with `{ data, error }` rather
 * than throwing. Retries once when the resolved `error` looks transient OR the
 * call itself throws transiently. Returns the final `{ data, error }`.
 */
type Resulted<T> = {
    data: T;
    error: {
        message: string;
    } | null;
};
export declare function withRetryResult<T>(fn: () => PromiseLike<Resulted<T>>, label?: string, delayMs?: number): Promise<Resulted<T>>;
export {};
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