refactor: reorganize pool properties below constructor

Author: mbroadst

lib/cmap/connection_pool.js

@@ -182,6 +182,22 @@ class ConnectionPool extends EventEmitter {
     });
   }
 
+  get address() {
+    return `${this.options.host}:${this.options.port}`;
+  }
+
+  get generation() {
+    return this[kGeneration];
+  }
+
+  get totalConnectionCount() {
+    return this[kConnections].length + (this.options.maxPoolSize - this[kPermits]);
+  }
+
+  get availableConnectionCount() {
+    return this[kConnections].length;
+  }
+
   /**
    * Check a connection out of this pool. The connection will continue to be tracked, but no reference to it
    * will be held by the pool. This means that if a connection is checked out it MUST be checked back in or
@@ -343,22 +359,6 @@ class ConnectionPool extends EventEmitter {
       });
     });
   }
-
-  get generation() {
-    return this[kGeneration];
-  }
-
-  get totalConnectionCount() {
-    return this[kConnections].length + (this.options.maxPoolSize - this[kPermits]);
-  }
-
-  get availableConnectionCount() {
-    return this[kConnections].length;
-  }
-
-  get address() {
-    return `${this.options.host}:${this.options.port}`;
-  }
 }
 
 function ensureMinPoolSize(pool) {