/**
 * Small typed helpers for inspecting `pgsql-parser` AST nodes.
 *
 * Operates on the raw shape returned by `parse()` rather than the typed
 * `@pgsql/types` view, so the runtime cost is just object lookups.
 */
import type { PgAstNode } from './parse';
type Obj = Record<string, unknown>;
/** Extract the single wrapping key (e.g. `A_Expr`, `BoolExpr`) and its payload. */
export declare function unwrap(node: PgAstNode): {
    kind: string;
    body: Obj;
} | null;
/** Returns the boolean literal value, or null if not an `A_Const(bool)`. */
export declare function boolConst(node: PgAstNode): boolean | null;
export {};