import _Ajv from 'ajv';
import addFormats from 'ajv-formats';

// Singleton Ajv instance
export type AjvType = typeof _Ajv & { addFormats: typeof addFormats };

export const Ajv: AjvType =
    (globalThis as { Ajv?: AjvType })?.Ajv ||
    (() => {
        const __Ajv = _Ajv;
        (__Ajv as unknown as AjvType).addFormats = addFormats;
        return __Ajv as AjvType;
    })();

export const ajv = new Ajv({
    allErrors: true,
    allowUnionTypes: true,
});

Ajv.addFormats(ajv);