/**
 * @license
 * Copyright 2026 Steven Roussey <sroussey@gmail.com>
 * SPDX-License-Identifier: Apache-2.0
 */
import type { JsonSchema } from "@workglow/util/schema";
/** Options for {@link mapPostgresType}. */
export interface PostgresTypeMapOptions {
    /**
     * Resolve the non-null variant of a (possibly `anyOf`-nullable) schema.
     * Supplied by the storage class so the JSON-Schema → SQL mapping reuses the
     * same null-stripping logic as the rest of the backend.
     */
    readonly getNonNullType: (typeDef: JsonSchema) => JsonSchema;
    /**
     * Optional hook for the pgvector extension: given the resolved non-null
     * type of a `string` column, return a `vector(N)` column type, or undefined
     * to fall through to the normal string handling. Backends without pgvector
     * (e.g. Supabase via PostgREST) omit this.
     */
    readonly vectorTypeFor?: (actualType: Exclude<JsonSchema, boolean>) => string | undefined;
}
/**
 * Map a JSON Schema property to a PostgreSQL column type. Shared by every
 * Postgres-shaped backend so the type mapping (string formats, integer range
 * selection, NUMERIC precision, native array support, JSONB fallbacks) lives
 * in one place. The only backend-specific behavior — pgvector columns — is
 * injected via {@link PostgresTypeMapOptions.vectorTypeFor}.
 */
export declare function mapPostgresType(typeDef: JsonSchema, options: PostgresTypeMapOptions): string;
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