import { Step } from '../types.js';
export declare function backupPathForTarget(targetAbs: string): string;
/**
 * Plan an atomic replace for symlink target:
 * - create tmp symlink (done elsewhere)
 * - move existing target to backup
 * - move tmp into place
 *
 * This does NOT delete backups; leaving backups is safer and aids rollback.
 */
export declare function planReplaceTargetWithTmp(opts: {
    targetAbs: string;
    atomic: boolean;
}): {
    backupAbs?: string;
    steps: Step[];
    tmpAbs: string;
};