Fix: yaml.load switch from fs.readfile to xhr if window is in global env, and that not what we want

Author: jj618

loadSync.js

@@ -100,7 +100,7 @@ function _import (file) {
   // How do we handle file by type
   const mapping = {
     '.json': fs.readJsonSync,
-    '.yml' : yaml.load.bind(yaml),
+    '.yml' : _loadYml,
     '.js' : require,
     '.node': require
   };
@@ -118,6 +118,10 @@ function _import (file) {
   return result;
 }
 
+function _loadYml(file){
+  return yaml.parse(fs.readFileSync(file, {encoding:'utf8'}));
+}
+
 function importCircularReferenceException (importedYamlFile, yamlFile) {
   let err = new Error(`Circular reference detected importing ${importedYamlFile} in ${yamlFile}`);
   err.name = 'importCircularReferenceException';