separated test files from istanbul for correct coverage stats

Author: Alice

src/__tests__/build.test.ts

@@ -1,3 +1,4 @@
+/* istanbul ignore file */
 import setup from './setup';
 
 const { stepFunctionsOfflinePlugin, StepFunctionsOfflinePlugin, serverless } = setup();

src/__tests__/enum.test.ts

@@ -1,3 +1,4 @@
+/* istanbul ignore file */
 import enums from '../enum';
 
 describe('enum.js', () => {

src/__tests__/examples/firstLambda/index.js

@@ -1,3 +1,4 @@
+/* istanbul ignore file */
 import Promise from 'bluebird';
 console.log('Loading function One');
 

src/__tests__/setup.ts

@@ -1,3 +1,4 @@
+/* istanbul ignore file */
 import Serverless from 'serverless/lib/Serverless';
 import CLI from 'serverless/lib/classes/CLI';
 import { ServerlessWithError } from '../types';
@@ -18,8 +19,8 @@ export default function setup(): {
     },
   };
   return {
-    serverless,
+    serverless: serverless as any,
     StepFunctionsOfflinePlugin,
-    stepFunctionsOfflinePlugin: new StepFunctionsOfflinePlugin(serverless, global['options']),
+    stepFunctionsOfflinePlugin: new StepFunctionsOfflinePlugin(serverless as any, global['options']),
   };
 }