/**
 * postgres-mcp - PostGIS Schema Utilities
 *
 * Preprocessing, coordinate validation, and unit conversion helpers
 * for geospatial operations.
 */
import { z } from "zod";
/**
 * Preprocess PostGIS parameters:
 * - Alias: tableName -> table
 * - Parse schema.table format
 * Exported for use in tool files with inline schemas.
 */
export declare function preprocessPostgisParams(input: unknown): unknown;
/**
 * Preprocess point object to support aliases:
 * - lon/longitude -> lng
 * - latitude -> lat
 * - x/y -> lng/lat
 *
 * Also validates coordinate bounds when validateBounds is true (default).
 * Throws ZodError-compatible error for consistency with schema validation.
 */
export declare function preprocessPoint(point: unknown, validateBounds?: boolean): {
    lat: number;
    lng: number;
} | undefined;
/**
 * Convert distance to meters based on unit
 */
export declare function convertToMeters(distance: number, unit?: string): number;
export declare const PointSchemaBase: z.ZodObject<{
    lat: z.ZodOptional<z.ZodPreprocess<z.ZodOptional<z.ZodNumber>>>;
    latitude: z.ZodOptional<z.ZodPreprocess<z.ZodOptional<z.ZodNumber>>>;
    y: z.ZodOptional<z.ZodPreprocess<z.ZodOptional<z.ZodNumber>>>;
    lng: z.ZodOptional<z.ZodPreprocess<z.ZodOptional<z.ZodNumber>>>;
    lon: z.ZodOptional<z.ZodPreprocess<z.ZodOptional<z.ZodNumber>>>;
    longitude: z.ZodOptional<z.ZodPreprocess<z.ZodOptional<z.ZodNumber>>>;
    x: z.ZodOptional<z.ZodPreprocess<z.ZodOptional<z.ZodNumber>>>;
}, z.core.$strip>;
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