Refactor duplicate code in mixin (#2529)

* Refactor duplicate code in mixin

* Remove debugger

packages/slate/src/interfaces/object.js

@@ -48,18 +48,20 @@ function create(type) {
  * Mix in the object interfaces.
  */
 
-mixin(create('block'), [Block])
+Object.entries({
-mixin(create('change'), [Change])
+  Block,
-mixin(create('decoration'), [Decoration])
+  Change,
-mixin(create('document'), [Document])
+  Decoration,
-mixin(create('editor'), [Editor])
+  Document,
-mixin(create('inline'), [Inline])
+  Editor,
-mixin(create('leaf'), [Leaf])
+  Inline,
-mixin(create('mark'), [Mark])
+  Leaf,
-mixin(create('node'), [Node])
+  Mark,
-mixin(create('operation'), [Operation])
+  Node,
-mixin(create('point'), [Point])
+  Operation,
-mixin(create('range'), [Range])
+  Point,
-mixin(create('selection'), [Selection])
+  Range,
-mixin(create('text'), [Text])
+  Selection,
-mixin(create('value'), [Value])
+  Text,
+  Value,
+}).forEach(([camel, obj]) => mixin(create(camel.toLowerCase()), [obj]))