import type { GitRunner } from "./types.js";
export type RefSpec = {
    ref: string;
    expectedHash: string;
};
/** Parses `for-each-ref --format=%(refname)%00%(objectname)` output. Null when
 *  a line does not hold exactly one NUL: a malformed listing must never be
 *  mistaken for "no refs are present". */
export declare function parseRefLines(stdout: string): RefSpec[] | null;
/** Deletes refs in one `update-ref --stdin` batch, halving on failure so a
 *  single unexpected hash cannot block the rest. `onSingleFailure` receives
 *  refs that still fail alone — that is how a caller reaches a loose-ref
 *  unlink when git itself is unusable, so a throw falls through to halving
 *  rather than aborting. A timeout aborts the walk instead: the repository is
 *  busy and splitting only multiplies the wait. */
export declare function deleteRefsBatched(git: GitRunner, refs: readonly RefSpec[], options?: {
    env?: Record<string, string>;
    timeoutMs?: number;
    onSingleFailure?: (ref: RefSpec) => Promise<boolean>;
}): Promise<"ok" | "failed" | "timeout">;