/**
 * CommitStore — in-memory test double using a Map.
 */
import type { CommitRecord, CommitStore } from './commit-store.js';
export declare class MemoryCommitStore implements CommitStore {
    private readonly commits;
    /**
     * Returns the first commit for the task by insertion order.
     * Note: SQLite version uses ORDER BY created_at DESC LIMIT 1 (newest first).
     * This test double returns the first match for simplicity.
     */
    getCommitByTaskId(taskId: string): Promise<CommitRecord | null>;
    insert(record: CommitRecord): void;
    clear(): void;
}
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