fix(prompt): fix hasDefault check for --auto values

Author: acburdine

lib/ui/index.js

@@ -3,6 +3,7 @@ const ora = require('ora');
 const omit = require('lodash/omit');
 const chalk = require('chalk');
 const execa = require('execa');
+const isNil = require('lodash/isNil');
 const Listr = require('listr');
 const Table = require('cli-table3');
 const Promise = require('bluebird');
@@ -26,7 +27,7 @@ const defaultOptions = {
 };
 
 function hasDefault(prompt = {}) {
-    return isObject(prompt) && prompt.hasOwnProperty('default');
+    return isObject(prompt) && !isNil(prompt.default);
 }
 
 function getDefault(prompt = {}) {