@formatjs/intl-displaynames/lib/polyfill.js

Polyfill for: https://tc39.es/proposal-intl-displaynames

import { DisplayNames } from './';
import { shouldPolyfill } from './should-polyfill';
if (shouldPolyfill()) {
    Object.defineProperty(Intl, 'DisplayNames', {
        value: DisplayNames,
        enumerable: false,
        writable: true,
        configurable: true,
    });
}