Ensure cleanup is in type definition of module export. (#14)

Author: laurenzlong

src/features.ts

@@ -7,7 +7,7 @@ import * as firestore from './providers/firestore';
 import * as pubsub from './providers/pubsub';
 import * as storage from './providers/storage';
 
-export interface FeaturesList {
+export interface LazyFeatures {
  mockConfig: typeof mockConfig;
  wrap: typeof wrap;
  makeChange: typeof makeChange;
@@ -20,7 +20,7 @@ export interface FeaturesList {
  storage: typeof storage;
 }
 
-export const features: FeaturesList = {
+export const features: LazyFeatures = {
  mockConfig,
  wrap,
  makeChange,
@@ -32,3 +32,7 @@ export const features: FeaturesList = {
  pubsub,
  storage,
 };
+
+export interface FeaturesList extends LazyFeatures {
+ cleanup;
+}

src/index.ts

@@ -35,5 +35,5 @@ export = (firebaseConfig?: AppOptions) => {
  features = merge({}, features, {
  cleanup: () => test.cleanup,
  });
- return features;
+ return features as FeaturesList;
 };