@polkadot/types/create/createType.js

import { createTypeUnsafe } from '@polkadot/types-create';
/**
 * Create an instance of a `type` with a given `params`.
 * @param type - A recognizable string representing the type to create an
 * instance from
 * @param params - The value to instantiate the type with
 */
export function createType(registry, type, ...params) {
    return createTypeUnsafe(registry, type, params);
}