fix: protection around json.parse

Author: NathanWalker

src/http/http.ios.ts

@@ -283,12 +283,21 @@ class NSURLSessionTaskDelegateImpl extends NSObject
             let responseText;
             if (isTextContentType(returnType)) {
                 responseText = NSDataToString(this._data);
-                content = NSDataToString(responseText);
+                content = responseText;
             } else if (returnType.indexOf('application/json') > -1) {
                 // @ts-ignore
-                responseText = NSDataToString(this._data);
-                content = JSON.parse(responseText);
-                // content = deserialize(NSJSONSerialization.JSONObjectWithDataOptionsError(this._data, NSJSONReadingOptions.AllowFragments, null));
+                try {
+                  responseText = NSDataToString(this._data);
+                  content = JSON.parse(responseText);
+                  // content = deserialize(NSJSONSerialization.JSONObjectWithDataOptionsError(this._data, NSJSONReadingOptions.AllowFragments, null));
+                } catch (err) {
+                  this._reject({
+                      type: HttpError.Error,
+                      ios: null,
+                      message: err
+                  });
+                  return;
+                }
             } else {
                 content = this._data;
             }

src/xhr/TNSXMLHttpRequest.ts

@@ -426,7 +426,11 @@ export class TNSXMLHttpRequest {
             if (this.responseType === XMLHttpRequestResponseType.json) {
                 if (typeof res.content === 'string') {
                     this._responseText = res.content;
-                    this._response = JSON.parse(this.responseText);
+                    try {
+                      this._response = JSON.parse(this.responseText);
+                    } catch (err) {
+                      // this should probably be caught before the promise resolves
+                    }
                 } else if (typeof res.content === 'object') {
                     this._response = res.content;
                     this._responseText = res.responseText;