request: user-friendly error rather than error json (#122)

Author: logictitans

lib/request.js

@@ -44,14 +44,13 @@ class Request {
         variables: variables
       }
     };
-    // console.log(options);
+
     const result = await rp(options);
     if (result.errors) {
-      const err = new Error('GraphQL request Error');
+      const { type, message } = result.errors[0];
+      const err = new Error(`[${type}] GraphQL request Error: ${message}`);
       err.data = {
-        // query: query,
-        variables: variables,
-        errors: result.errors
+        variables
       };
       throw err;
     }