axios/lib/helpers/isURLSameOrigin.js

import platform from '../platform/index.js';

export default platform.hasStandardBrowserEnv
  ? ((origin, isMSIE) => (url) => {
      url = new URL(url, platform.origin);

      return (
        origin.protocol === url.protocol &&
        origin.host === url.host &&
        (isMSIE || origin.port === url.port)
      );
    })(
      new URL(platform.origin),
      platform.navigator && /(msie|trident)/i.test(platform.navigator.userAgent)
    )
  : () => true;