Migrate core-events to TypeScript

lib/core-events/package.json

@@ -14,7 +14,8 @@
     "url": "https://github.com/storybooks/storybook.git"
   },
   "license": "MIT",
-  "main": "index.js",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
   "publishConfig": {
     "access": "public"
   }

lib/core-events/src/index.ts

@@ -1,4 +1,20 @@
-module.exports = {
+export interface CoreEvents {
+  CHANNEL_CREATED: string;
+  GET_CURRENT_STORY: string;
+  SET_CURRENT_STORY: string;
+  GET_STORIES: string;
+  SET_STORIES: string;
+  SELECT_STORY: string;
+  APPLY_SHORTCUT: string;
+  STORY_ADDED: string;
+  FORCE_RE_RENDER: string;
+  REGISTER_SUBSCRIPTION: string;
+  STORY_RENDERED: string;
+  STORY_ERRORED: string;
+  STORY_THREW_EXCEPTION: string;
+}
+
+const events: CoreEvents = {
   CHANNEL_CREATED: 'channelCreated',
   GET_CURRENT_STORY: 'getCurrentStory',
   SET_CURRENT_STORY: 'setCurrentStory',
@@ -13,3 +29,5 @@ module.exports = {
   STORY_ERRORED: 'storyErrored',
   STORY_THREW_EXCEPTION: 'storyThrewException',
 };
+
+export default events;

lib/core-events/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "rootDir": "./src"
+  },
+  "include": ["src/**/*"],
+  "exclude": []
+}