/** Single source of truth — used to find-and-update our own comment. */
export declare const COMMENT_MARKER = "<!-- cdk-diff-report -->";
export declare function withMarker(md: string): string;
export declare const COMMENT_LIMIT: {
    readonly github: 65000;
    readonly gitlab: 900000;
    readonly bitbucket: 32000;
};
/** Truncate an over-long comment body so a big diff still posts something. */
export declare function capComment(body: string, maxLength: number): string;
export interface RetryOptions {
    retries?: number;
    timeoutMs?: number;
}
/**
 * fetch with a per-attempt timeout and exponential backoff on transient / rate-
 * limit responses (honoring Retry-After). Posting the comment is the one thing
 * the tool must do; a single transient 502 shouldn't abort it.
 */
export declare function fetchWithRetry(url: string, init?: RequestInit, opts?: RetryOptions): Promise<Response>;
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