interface TransformFn {
    mysqlType?: string;
    (...args: unknown[]): unknown;
}
declare const typeMap: Record<string, string>;
/**
 * Resolves a Stonyx ORM attribute type to a MySQL column type.
 *
 * For built-in types, returns the mapped MySQL type directly.
 *
 * For custom transforms (e.g. an `animal` transform that maps strings to ints):
 *   - If the transform function exports a `mysqlType` property, that value is used.
 *     Example: `const transform = (v) => codeMap[v]; transform.mysqlType = 'INT'; export default transform;`
 *   - Otherwise, defaults to JSON. Values are JSON-stringified on write and
 *     JSON-parsed on read. This handles primitives and plain objects correctly.
 *     Class instances will be reduced to plain objects — if a custom transform
 *     produces class instances, it must declare a `mysqlType` and handle
 *     serialization itself.
 */
export declare function getMysqlType(attrType: string, transformFn?: TransformFn): string;
export default typeMap;