fixing fallback issue

Author: leftieFriele

lib/http-client.js

@@ -22,6 +22,7 @@ export default class HttpClient {
     #abortController;
     #agent;
     #breaker;
+    #hasFallback = false;
     #logger;
     #throwOn400;
     #throwOn500;
@@ -69,6 +70,7 @@ export default class HttpClient {
         });
 
         if (fallback) {
+            this.#hasFallback = true;
             this.#fallback(fallback);
         }
     }
@@ -120,7 +122,7 @@ export default class HttpClient {
         try {
             return await this.#breaker.fire(options);
         } catch (error) {
-            if (!this.fallback) {
+            if (!this.#hasFallback) {
                 throw new HttpClientError(
                     `Error on ${options.method} ${options.origin}${options.path}`,
                     {