import type { Expr, QueryExpr } from "../ir/ir.js";
import type { Scope, ScopeTree } from "./scope.js";
/** The Exprs that belong directly to a scope's body (not its child scopes). */
export declare function scopeExprs(scope: Scope): Expr[];
/** Every (expr, owning scope) pair in structure order. `ast` additionally attributes
 *  QueryExpr.orderBy/limit exprs (they live on QueryExpr, not in any Scope.body). */
export declare function walk(scopes: ScopeTree, ast?: QueryExpr): Generator<{
    node: Expr;
    scope: Scope;
}>;
/** The scope owning `node`, or undefined if the node is not reachable from these scopes.
 *  Lazy: first call walks once and memoizes per ScopeTree (WeakMap — annotation-side).
 *  Pass `ast` on the FIRST call to cover ORDER BY/LIMIT nodes — the index is built once
 *  and never rebuilt, so a later call's `ast` is ignored once an index exists. */
export declare function scopeOf(scopes: ScopeTree, node: Expr, ast?: QueryExpr): Scope | undefined;