add hw2

node_modules/khroma/dist/methods/adjust.js

@@ -0,0 +1,16 @@
+/* IMPORT */
+import Color from '../color/index.js';
+import change from './change.js';
+/* MAIN */
+const adjust = (color, channels) => {
+    const ch = Color.parse(color);
+    const changes = {};
+    for (const c in channels) {
+        if (!channels[c])
+            continue;
+        changes[c] = ch[c] + channels[c];
+    }
+    return change(color, changes);
+};
+/* EXPORT */
+export default adjust;