Import Promise from RSVP

Import Promise from RSVP

diff --git a/test/javascripts/lib/checklist-test.js.es6 b/test/javascripts/lib/checklist-test.js.es6
index 94a99e8..fc6e14b 100644
--- a/test/javascripts/lib/checklist-test.js.es6
+++ b/test/javascripts/lib/checklist-test.js.es6
@@ -1,6 +1,7 @@
 import { cookAsync } from "discourse/lib/text";
 import Post from "discourse/models/post";
 import { checklistSyntax } from "discourse/plugins/discourse-checklist/discourse/initializers/checklist";
+import { Promise } from "rsvp";
 
 QUnit.module("initializer:checklist");

GitHub sha: 3e7a3ba5