improve declaration examples

src/types.d.ts

@@ -1 +1,20 @@
-// add your custom typings here
+// example declaration file - remove these and add your own custom typings
+
+// memory extension samples
+interface CreepMemory {
+  role: string;
+  room: string;
+  working: boolean;
+}
+
+interface Memory {
+  uuid: number;
+  log: any;
+}
+
+// `global` extension samples
+declare namespace NodeJS {
+  interface Global {
+    log: any;
+  }
+}