/**
 * Tombstone naming for rename-first sync (see `ddp inspect stale`, `ddp apply --prune`).
 * Diff must not re-rename or re-drop objects that already follow these conventions.
 */
/** Column/table soft-drop: `{name}_dropped_{milliseconds}` */
export declare const PRESERVED_DROPPED_SUFFIX_PATTERN: RegExp;
/** Trigger soft-rename backup: `{name}_old_{milliseconds}` */
export declare const PRESERVED_OLD_TRIGGER_SUFFIX_PATTERN: RegExp;
export declare function isPreservedDroppedArtifactName(name: string): boolean;
export declare function isPreservedOldTriggerName(triggerName: string): boolean;
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