deep clones to avoid mutation errors

src/commands/LayoutTreeParser.js

@@ -16,14 +16,14 @@ export default class LayoutTreeParser {
   }
 
   parseFromSimpleJSON(simpleJsonApi) {
-    // TOOD deepclone
-    if (simpleJsonApi.sideMenu) {
-      return this._createSideMenu(simpleJsonApi);
+    const input = _.cloneDeep(simpleJsonApi);
+    if (input.sideMenu) {
+      return this._createSideMenu(input);
     }
-    if (simpleJsonApi.tabs) {
-      return this._createTabs(simpleJsonApi.tabs);
+    if (input.tabs) {
+      return this._createTabs(input.tabs);
     }
-    return this._createContainerStackWithContainer(simpleJsonApi.container);
+    return this._createContainerStackWithContainer(input.container);
   }
 
   _node(node) {

src/commands/LayoutTreeParser.test.js

@@ -26,6 +26,12 @@ describe('LayoutTreeParser', () => {
       });
   });
 
+  it('deep clones to avoid mutations', () => {
+    const obj = {};
+    const result = uut.parseFromSimpleJSON({ container: { foo: obj } });
+    expect(result.children[0].data.foo).not.toBe(obj);
+  });
+
   it('parses single screen', () => {
     expect(uut.parseFromSimpleJSON(SimpleLayouts.singleScreenApp))
       .toEqual({
@@ -69,6 +75,7 @@ describe('LayoutTreeParser', () => {
           }
         ]
       });
+    expect(uut.parseFromSimpleJSON(SimpleLayouts.singleScreenWithAditionalParams).children[0].data.passProps.bar).toBe(SimpleLayouts.passedFunction);
     expect(uut.parseFromSimpleJSON(SimpleLayouts.singleScreenWithAditionalParams).children[0].data.passProps.bar()).toEqual('Hello from a function');
   });