fixes no callback function warning #200 (#206)

Author: arcdev1

lib/utils.js

@@ -27,13 +27,13 @@ var loadGoogleMapScript = function loadGoogleMapScript(googleMapsScriptBaseUrl,
     });
   }
 
+  var scriptUrl = new URL(googleMapsScriptUrl);
+  scriptUrl.searchParams.set("callback", "__REACT_GOOGLE_AUTOCOMPLETE_CALLBACK__");
   var el = document.createElement("script");
-  el.src = googleMapsScriptUrl;
-  document.body.appendChild(el);
+  el.src = scriptUrl.toString();
   return new Promise(function (resolve) {
-    el.addEventListener("load", function () {
-      return resolve();
-    });
+    window.__REACT_GOOGLE_AUTOCOMPLETE_CALLBACK__ = resolve;
+    document.body.appendChild(el);
   });
 };
 

package-lock.json

@@ -24,12 +24,16 @@ export const loadGoogleMapScript = (
     });
   }
 
+  let scriptUrl = new URL(googleMapsScriptUrl);
+  scriptUrl.searchParams.set(
+    "callback",
+    "__REACT_GOOGLE_AUTOCOMPLETE_CALLBACK__"
+  );
   const el = document.createElement("script");
-  el.src = googleMapsScriptUrl;
-
-  document.body.appendChild(el);
+  el.src = scriptUrl.toString();
 
   return new Promise((resolve) => {
-    el.addEventListener("load", () => resolve());
+    window.__REACT_GOOGLE_AUTOCOMPLETE_CALLBACK__ = resolve;
+    document.body.appendChild(el);
   });
 };