Initial commit

util/merge.js

@@ -0,0 +1,24 @@
+const merge = function self (...objects) {
+  let [ left, right ] = objects
+  
+  right = { ...right } // Prevent overwriting source
+
+  for(const key in right) {
+    const source = right[key],
+          target = left[key]
+
+    if(target && source instanceof Object)
+      right[key] = self(target, source)
+  }
+
+  const output = Object.assign(left, right)
+
+  if(objects.length > 2) {
+    return self(output, ...objects.slice(2))
+  } else {
+    objects[0] = output
+    return output
+  }
+}
+
+module.exports = merge