@opra/common/document/data-type/required-type.js

Opra common package

import { createMappedClass } from './utils/create-mapped-class.js';
/**
 *
 */
export function RequiredType(base, ...args) {
    const keys = Array.isArray(args[0]) ? args[0] : true;
    const options = Array.isArray(args[0]) ? args[1] : args[0];
    return createMappedClass(base, { required: keys }, options);
}