import type { AttemptPhase, FailureCategory } from "./phases.js";
export declare const CONTINUATION_DELAY_MS = 1000;
export type RetryDecision = {
    retry: false;
} | {
    retry: true;
    kind: "continuation";
    delayMs: typeof CONTINUATION_DELAY_MS;
    attempt?: number;
} | {
    retry: true;
    kind: "backoff";
    attempt?: number;
};
export interface RetryContext {
    attempt?: number;
}
export declare function backoffMs(attempt: number, capMs: number): number;
export declare function shouldRetry(phase: AttemptPhase, failure?: FailureCategory, ctx?: RetryContext): RetryDecision;