import { z } from 'zod';
import type { VectorFilter } from '../types/sdk/vector-store';
export declare const FILTER_OPERATORS: readonly ["eq", "ne", "in", "nin"];
export type VectorFilterInput = VectorFilter | Record<string, string | number | boolean>;
export declare function normalizeFilterInput(input: VectorFilterInput): VectorFilter;
export declare function assertValidFilter(filter: VectorFilter): void;
export declare function buildFilterInputSchema(keys: Record<string, string>): z.ZodOptional<z.ZodArray<z.ZodDiscriminatedUnion<"operator", [z.ZodObject<{
    key: z.ZodEnum<[string, ...string[]]>;
    operator: z.ZodEnum<["eq", "ne"]>;
    value: z.ZodUnion<[z.ZodString, z.ZodNumber, z.ZodBoolean]>;
}, "strip", z.ZodTypeAny, {
    key: string;
    operator: "eq" | "ne";
    value: string | number | boolean;
}, {
    key: string;
    operator: "eq" | "ne";
    value: string | number | boolean;
}>, z.ZodObject<{
    key: z.ZodEnum<[string, ...string[]]>;
    operator: z.ZodEnum<["in", "nin"]>;
    value: z.ZodArray<z.ZodUnion<[z.ZodString, z.ZodNumber]>, "many">;
}, "strip", z.ZodTypeAny, {
    key: string;
    operator: "in" | "nin";
    value: (string | number)[];
}, {
    key: string;
    operator: "in" | "nin";
    value: (string | number)[];
}>]>, "many">>;