import type { CompositeFilter, Filter, LeafFilter } from './types.js';
export declare const OPAQUE_FILTER_ERROR = "nested Prisma `where` is not supported by the Drizzle adapter; return a Filter or a flat `{ field: scalar }` map";
export declare const LEAF_OPS: Set<"startsWith" | "eq" | "contains" | "containsExact" | "gte" | "lte" | "lt" | "in" | "isNull" | "isNotNull">;
export declare function isCompositeFilter(node: unknown): node is CompositeFilter;
export declare function isLeafFilter(node: unknown): node is LeafFilter;
/** Flat `{ field: scalar }` map — the 99% listWhere sugar. Empty `{}` is NOT flat (handler throws on listWhere `{}`; other callers keep it opaque). */
export declare function isFlatEqMap(node: unknown): node is Record<string, string | number | boolean | bigint | Date | null>;
/**
 * Turns a listWhere / relations.where return value into a Filter when we can
 * do so without guessing. Nested Prisma where objects stay opaque.
 */
export declare function normalizeScope(scope: Record<string, unknown> | Filter | undefined): Filter | Record<string, unknown> | undefined;