build: update tslib to 1.11.0

Spec helper change is related to microsoft/tslib#90

Author: alan-agius4

packages/angular_devkit/build_angular/package.json

@@ -96,7 +96,7 @@
     "karma-jasmine-html-reporter": "^1.4.0",
     "popper.js": "^1.14.1",
     "protractor": "~5.4.0",
-    "tslib": "~1.10.0",
+    "tslib": "~1.11.0",
     "zone.js": "^0.10.0"
   },
   "peerDependencies": {

packages/ngtools/webpack/src/transformers/spec_helpers.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 import { virtualFs } from '@angular-devkit/core';
-import { readFileSync, readdirSync } from 'fs';
+import { readFileSync, readdirSync, statSync } from 'fs';
 import { dirname, join } from 'path';
 import * as ts from 'typescript';
 import { WebpackCompilerHost } from '../compiler_host';
@@ -126,7 +126,8 @@ function loadTypeScriptLibFiles(): Record<string, string> {
 
 function loadTsLibFiles(): Record<string, string> {
   const libFolderPath = dirname(require.resolve('tslib/package.json'));
-  const libFolderFiles = readdirSync(libFolderPath);
+  const libFolderFiles = readdirSync(libFolderPath)
+    .filter(p => statSync(join(libFolderPath, p)).isFile());
 
   // Return a map of the lib names to their content.
   const libs: Record<string, string> = {};

yarn.lock

@@ -5092,7 +5092,6 @@ fsevents@^1.2.7:
   dependencies:
     bindings "^1.5.0"
     nan "^2.12.1"
-    node-pre-gyp "*"
 
 fsevents@~2.1.2:
   version "2.1.2"
@@ -10078,7 +10077,6 @@ [email protected], sass@^1.23.0:
 
 "sauce-connect-proxy@https://saucelabs.com/downloads/sc-4.5.4-linux.tar.gz":
   version "0.0.0"
-  uid dc5efcd2be24ddb099a85b923d6e754754651fa8
   resolved "https://saucelabs.com/downloads/sc-4.5.4-linux.tar.gz#dc5efcd2be24ddb099a85b923d6e754754651fa8"
 
 saucelabs@^1.5.0:
@@ -11352,11 +11350,16 @@ ts-node@^5.0.0:
     source-map-support "^0.5.3"
     yn "^2.0.0"
 
-[email protected], tslib@^1.10.0, tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0, tslib@~1.10.0:
+[email protected], tslib@^1.10.0, tslib@^1.8.0, tslib@^1.8.1, tslib@^1.9.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
   integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==
 
+tslib@~1.11.0:
+  version "1.11.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.11.0.tgz#f1f3528301621a53220d58373ae510ff747a66bc"
+  integrity sha512-BmndXUtiTn/VDDrJzQE7Mm22Ix3PxgLltW9bSNLoeCY31gnG2OPx0QqJnuc9oMIKioYrz487i6K9o4Pdn0j+Kg==
+
 tslint-no-circular-imports@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/tslint-no-circular-imports/-/tslint-no-circular-imports-0.7.0.tgz#9df0a15654d66b172e0b7843eed073fa5ae99b5f"