ra-core/src/form/isRequired.ts

Core components of react-admin, a frontend Framework for building admin applications on top of REST services, using ES6, React

const isRequired = validate => {
    if (validate && validate.isRequired) {
        return true;
    }
    if (Array.isArray(validate)) {
        return validate.some(it => it.isRequired);
    }
    return false;
};

export default isRequired;