Adding optional prop for lazy load the intercom script

src/initialize.ts

@@ -6,7 +6,7 @@
  *
  * @see {@link https://developers.intercom.com/installing-intercom/docs/basic-javascript}
  */
-const initialize = (appId: string) => {
+const initialize = (appId: string, timeout = 0) => {
   var w = window;
   var ic = w.Intercom;
   if (typeof ic === 'function') {
@@ -23,12 +23,14 @@ const initialize = (appId: string) => {
     };
     w.Intercom = i;
     var l = function() {
-      var s = d.createElement('script');
-      s.type = 'text/javascript';
-      s.async = true;
-      s.src = 'https://widget.intercom.io/widget/' + appId;
-      var x = d.getElementsByTagName('script')[0];
-      x.parentNode.insertBefore(s, x);
+      setTimeout(function() {
+        var s = d.createElement('script');
+        s.type = 'text/javascript';
+        s.async = true;
+        s.src = 'https://widget.intercom.io/widget/' + appId;
+        var x = d.getElementsByTagName('script')[0];
+        x.parentNode.insertBefore(s, x);
+      }, timeout);
     };
     if (document.readyState === 'complete') {
       l();

src/provider.tsx

@@ -22,6 +22,7 @@ export const IntercomProvider: React.FC<IntercomProviderProps> = ({
   onUnreadCountChange,
   shouldInitialize = !isSSR,
   apiBase,
+  initializeDelayInMs,
   ...rest
 }) => {
   const isBooted = React.useRef(autoBoot);
@@ -36,7 +37,7 @@ export const IntercomProvider: React.FC<IntercomProviderProps> = ({
     );
 
   if (!isSSR && !window.Intercom && shouldInitialize) {
-    initialize(appId);
+    initialize(appId, initializeDelayInMs);
     // Only add listeners on initialization
     if (onHide) IntercomAPI('onHide', onHide);
     if (onShow) IntercomAPI('onShow', onShow);

src/types.ts

@@ -419,4 +419,10 @@ export type IntercomProviderProps = {
    * Format https://${INTERCOM_APP_ID}.intercom-messenger.com
    */
   apiBase?: string;
+  /**
+   * Indicates if the intercom initialization should be delayed
+   *
+   * @remarks If not set delay is set to 0ms
+   * */
+  initializeDelayInMs?: number;
 };