From 2788d8e28cd6da50f003da07434f6c8bdb776fc7 Mon Sep 17 00:00:00 2001
From: Jim Speth <jspeth@squarespace.com>
Date: Thu, 14 Feb 2019 11:50:57 -0500
Subject: [PATCH] Prevent crash if node handle for webview cannot be found.

---
 WKWebView.ios.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/WKWebView.ios.js b/WKWebView.ios.js
index a24024a2..2ace9d7a 100644
--- a/WKWebView.ios.js
+++ b/WKWebView.ios.js
@@ -449,8 +449,13 @@ class WKWebView extends React.Component {
    * ```
    */
   postMessage = (data) => {
+    const webViewHandle = this.getWebViewHandle();
+    if (webViewHandle === null) {
+      console.warn('CRAWKWebView postMessage: skipping message. No node handle for webview.');
+      return;
+    }
     UIManager.dispatchViewManagerCommand(
-      this.getWebViewHandle(),
+      webViewHandle,
       UIManager.CRAWKWebView.Commands.postMessage,
       [String(data)]
     );