support older JSC; fixes darknoon#2, closes darknoon#4, closes darknoon#1 // using babel-preset-env with targets safari 6 + Function+arguments workaround

Author: leonardpauli

.babelrc

@@ -1,3 +1,7 @@
 {
-  "plugins": ["transform-es2015-modules-commonjs"]
-}
+  "presets": [["@babel/preset-env", {
+  	targets: {
+  		safari: 6
+  	}
+  }]],
+}