import type Database from 'better-sqlite3';
/**
 * Cascade-delete a set of definitions and all their dependents.
 * Since FK enforcement is OFF, we manually delete in leaf-first order.
 */
export declare function cascadeDeleteDefinitions(db: Database.Database, definitionIds: number[]): void;
/**
 * Cascade-delete a file and all its owned data (definitions, imports, symbols, usages).
 */
export declare function cascadeDeleteFile(db: Database.Database, fileId: number): void;
/**
 * Null out any symbols.definition_id that point to non-existent definitions.
 * Returns the number of fixed references.
 */
export declare function cleanDanglingSymbolRefs(db: Database.Database): number;
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