/**
 * Retry with exponential backoff for opensip-tools.
 * Designed for network calls (e.g., --report-to SARIF POST).
 */
export interface RetryOptions {
    /** Maximum number of attempts (including the first). Default: 3 */
    maxAttempts?: number;
    /** Initial delay in ms before first retry. Default: 500 */
    initialDelayMs?: number;
    /** Maximum delay in ms. Default: 10000 */
    maxDelayMs?: number;
    /** Multiplier for exponential backoff. Default: 2 */
    backoffMultiplier?: number;
    /** Called before each retry with attempt number, error, and delay. */
    onRetry?: (attempt: number, error: Error, delayMs: number) => void;
}
/**
 * Execute an async function with exponential backoff retry.
 * Throws the last error if all attempts fail.
 *
 * @throws {Error} The last error thrown by `fn` after exhausting
 *   `effectiveMaxAttempts` attempts. Non-Error throws are wrapped in
 *   an `Error` whose message is `String(value)`.
 */
export declare function withRetry<T>(fn: () => Promise<T>, options?: RetryOptions): Promise<T>;
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