Remove boolean unions (#1036)

Author: EzraBrooks

src/core/Ros.ts

@@ -702,7 +702,7 @@ export default class Ros extends EventEmitter<
           }
         } else {
           // lookup the name
-          let sub: boolean | rosapi.TypeDef = false;
+          let sub: rosapi.TypeDef | undefined = undefined;
           for (const hint of hints) {
             if (hint.type === fieldType) {
               sub = hint;

src/core/Topic.ts

@@ -26,7 +26,7 @@ export default class Topic<T> extends EventEmitter<{
   unsubscribe: undefined;
   unadvertise: undefined;
 }> {
-  waitForReconnect: boolean | undefined = undefined;
+  waitForReconnect = false;
   reconnectFunc: (() => void) | undefined = undefined;
   isAdvertised = false;
   ros: Ros;