Function post

packages/react-error-overlay/fixtures/bundle_u.mjs:5246–5259

(msg, origin)

      }
    };
    var post = function(msg, origin) {
      debug('post', msg, origin);
      try {
        // When the iframe is not loaded, IE raises an exception
        // on 'contentWindow'.
        setTimeout(function() {
          if (iframe && iframe.contentWindow) {
            iframe.contentWindow.postMessage(msg, origin);
          }
        }, 0);
      } catch (x) {
        // intentionally empty
      }
    };

    iframe.src = iframeUrl;
    iframe.style.display = 'none';