fix: avoid loop on Reference ref setting (#266)

Author: FezVrasta

.size-snapshot.json

@@ -1,25 +1,25 @@
 {
   "dist/index.umd.js": {
-    "bundled": 51977,
-    "minified": 17666,
-    "gzipped": 5671
+    "bundled": 52175,
+    "minified": 17761,
+    "gzipped": 5691
   },
   "dist/index.umd.min.js": {
-    "bundled": 25989,
-    "minified": 9935,
-    "gzipped": 3422
+    "bundled": 26187,
+    "minified": 10030,
+    "gzipped": 3448
   },
   "dist/index.esm.js": {
-    "bundled": 11040,
-    "minified": 6620,
-    "gzipped": 1840,
+    "bundled": 11230,
+    "minified": 6715,
+    "gzipped": 1864,
     "treeshaked": {
       "rollup": {
-        "code": 3717,
+        "code": 3718,
         "import_statements": 137
       },
       "webpack": {
-        "code": 4823
+        "code": 4824
       }
     }
   }

src/Manager.js

@@ -31,10 +31,15 @@ export default class Manager extends React.Component<
     };
   }
 
-  setReferenceNode = (referenceNode: ?HTMLElement) =>
+  setReferenceNode = (referenceNode: ?HTMLElement) => {
+    if (!referenceNode || this.state.context.referenceNode === referenceNode) {
+      return;
+    }
+
     this.setState(({ context }) => ({
       context: { ...context, referenceNode },
     }));
+  };
 
   render() {
     return (