import { type FoldRule, type IdentKind } from "../ident/fold.js";
import type { QualifiedNameConfig } from "../ir/qualified-name.js";
export declare const TSQL_FOLD_RULE: FoldRule;
/** Four-part names: linked_server.database.schema.object, with elidable middle parts
 *  (`db..t` = default schema) — learn.microsoft.com "Transact-SQL syntax conventions",
 *  multipart names. Normalized vocabulary: server = linked server, catalog = database. */
export declare const TSQL_NAME_CONFIG: QualifiedNameConfig;
/** Fold an identifier to its T-SQL identity key. */
export declare function fold(raw: string, kind?: IdentKind): string;
/** Presentation twin: strip delimiters, no case change. */
export declare function displayName(raw: string): string;
export declare function foldTableName(parts: string[]): string[];
export declare function matchesSourceKey(key: string, rawPart: string): boolean;