fix build errors

Author: filipesilva

packages/@angular/cli/models/webpack-configs/test.ts

@@ -14,13 +14,12 @@ import { WebpackTestOptions } from '../webpack-test-config';
  */
 
 
-
 export function getTestConfig(testConfig: WebpackTestOptions) {
 
   const configPath = CliConfig.configFilePath();
   const projectRoot = path.dirname(configPath);
   const appConfig = CliConfig.fromProject().config.apps[0];
-  const extraRules = [];
+  const extraRules: any[] = [];
 
   if (testConfig.codeCoverage) {
     extraRules.push({

packages/@angular/cli/plugins/karma.ts

@@ -49,7 +49,7 @@ const init: any = (config: any) => {
 
       // The `files` entry serves the file from `/base/{asset.input}/{asset.glob}`.
       // We need to add a URL rewrite that exposes the asset as `/{asset.output}/{asset.glob}`.
-      let relativePath, proxyPath;
+      let relativePath: string, proxyPath: string;
       if (fs.existsSync(assetPath)) {
         relativePath = path.relative(config.basePath, assetPath);
         proxyPath = path.join(pattern.output, pattern.glob);