add hw2

node_modules/khroma/dist/methods/channel.js

@@ -0,0 +1,9 @@
+/* IMPORT */
+import _ from '../utils/index.js';
+import Color from '../color/index.js';
+/* MAIN */
+const channel = (color, channel) => {
+    return _.lang.round(Color.parse(color)[channel]);
+};
+/* EXPORT */
+export default channel;