Bug fix to ensure that the category ids are not dropped aftering being filtered.

spec/picker-spec.js

@@ -33,5 +33,11 @@ describe('Picker', () => {
       subject = render({ emojisToShowFilter: unified => false })
       expect(subject.categories.length).toEqual(2)
     })
+
+    it('maintains category ids after it is filtered', () => {
+      subject = render({emojisToShowFilter: emoji => true});
+      const categoriesWithIds = subject.categories.filter(category => category.id);
+      expect(categoriesWithIds.length).toEqual(10);
+    });
   })
 })

src/components/picker.js

@@ -108,6 +108,7 @@ export default class Picker extends React.PureComponent {
           let newCategory = {
             emojis: newEmojis,
             name: category.name,
+            id: category.id
           }
 
           this.categories.push(newCategory)