/**
 * Pure readers for the two commit-message lines `aidlc revert` trusts: the
 * `Task:` trailer that ties a commit to a task, and git's own
 * `This reverts commit <sha>.` line that marks one as already undone.
 *
 * Nothing here reads subjects. A subject mentioning "T3" for another reason
 * must never select a commit (revert-by-task D1).
 *
 * Requirements: revert-by-task/AC-2, AC-3, AC-6
 */
/** One task a commit's trailer names. */
export interface TaskRef {
    instance: string;
    /** n in T<n>. */
    task: number;
}
/**
 * Parse one `Task:` trailer value (`<instance>/T<n>`).
 *
 * @returns null for anything else — an unqualified `T3` or free text names no
 *   task, so it selects nothing.
 */
export declare function parseTaskTrailer(value: string): TaskRef | null;
/** Full shas named by `This reverts commit <sha>.` lines in a commit body. */
export declare function revertedShas(body: string): string[];
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