@datazod/zod-sql/dist/maps/postgres/index.js

Convert Zod schemas to SQL table definitions with support for SQLite, PostgreSQL, and MySQL

import { z } from 'zod';
/**
 * Maps a Zod type to its corresponding SQL data type for PostgreSQL
 */
export const mapZodToPostgres = (zodType) => {
    // Unwrap nullable/optional to get the inner type
    if (zodType instanceof z.ZodNullable || zodType instanceof z.ZodOptional) {
        return mapZodToPostgres(zodType.unwrap());
    }
    // String types
    if (zodType instanceof z.ZodString) {
        // Handle special string formats
        const checks = zodType._def.checks;
        const hasDatetime = checks?.some((c) => c.kind === 'datetime');
        if (hasDatetime) {
            return 'TIMESTAMP WITH TIME ZONE'; // Native timestamp type
        }
        return 'TEXT';
    }
    // Number types
    if (zodType instanceof z.ZodNumber) {
        const checks = zodType._def.checks;
        const isInt = checks?.some((c) => c.kind === 'int');
        return isInt ? 'INTEGER' : 'DOUBLE PRECISION';
    }
    // Boolean
    if (zodType instanceof z.ZodBoolean) {
        return 'BOOLEAN';
    }
    // Arrays
    if (zodType instanceof z.ZodArray) {
        // Store any array as JSON
        return 'JSONB';
    }
    // Objects
    if (zodType instanceof z.ZodObject) {
        // Store object as JSON
        return 'JSONB';
    }
    // Enums
    if (zodType instanceof z.ZodEnum) {
        return 'TEXT';
    }
    // Dates
    if (zodType instanceof z.ZodDate) {
        return 'TIMESTAMP WITH TIME ZONE';
    }
    // Default for unknown types
    return 'TEXT';
};