diff --git a/packages/service-worker/config/test/generator_spec.ts b/packages/service-worker/config/test/generator_spec.ts
index ebc5b1926b..546be3a4ae 100644
--- a/packages/service-worker/config/test/generator_spec.ts
+++ b/packages/service-worker/config/test/generator_spec.ts
@@ -12,7 +12,7 @@ import {MockFilesystem} from '../testing/mock';
 describe('Generator', () => {
   beforeEach(() => spyOn(Date, 'now').and.returnValue(1234567890123));
 
-  it('generates a correct config', done => {
+  it('generates a correct config', async() => {
     const fs = new MockFilesystem({
       '/index.html': 'This is a test',
       '/main.css': 'This is a CSS file',
@@ -23,7 +23,7 @@ describe('Generator', () => {
       '/ignored/x.html': 'should be ignored',
     });
     const gen = new Generator(fs, '/test');
-    const res = gen.process({
+    const config = await gen.process({
       appData: {
         test: true,
       },
@@ -41,8 +41,8 @@ describe('Generator', () => {
             '/absolute/**',
             '/some/url?with+escaped+chars',
             'relative/*.txt',
-          ]
-        }
+          ],
+        },
       }],
       dataGroups: [{
         name: 'other',
@@ -55,7 +55,7 @@ describe('Generator', () => {
           maxSize: 100,
           maxAge: '3d',
           timeout: '1m',
-        }
+        },
       }],
       navigationUrls: [
         '/included/absolute/**',
@@ -67,92 +67,86 @@ describe('Generator', () => {
         '!http://example.com/excluded',
       ],
     });
-    res.then(config => {
-         expect(config).toEqual({
-           configVersion: 1,
-           timestamp: 1234567890123,
-           appData: {
-             test: true,
-           },
-           index: '/test/index.html',
-           assetGroups: [{
-             name: 'test',
-             installMode: 'prefetch',
-             updateMode: 'prefetch',
-             urls: [
-               '/test/foo/test.html',
-               '/test/index.html',
-               '/test/main.js',
-               '/test/main.ts',
-               '/test/test.txt',
-             ],
-             patterns: [
-               '\\/absolute\\/.*',
-               '\\/some\\/url\\?with\\+escaped\\+chars',
-               '\\/test\\/relative\\/[^/]*\\.txt',
-             ]
-           }],
-           dataGroups: [{
-             name: 'other',
-             patterns: [
-               '\\/api\\/.*',
-               '\\/test\\/relapi\\/.*',
-               'https:\\/\\/example\\.com\\/(?:.+\\/)?[^/]*\\?with\\+escaped\\+chars',
-             ],
-             strategy: 'performance',
-             maxSize: 100,
-             maxAge: 259200000,
-             timeoutMs: 60000,
-             version: 1,
-           }],
-           navigationUrls: [
-             {positive: true, regex: '^\\/included\\/absolute\\/.*$'},
-             {positive: false, regex: '^\\/excluded\\/absolute\\/.*$'},
-             {positive: true, regex: '^\\/included\\/some\\/url\\/with\\+escaped\\+chars$'},
-             {positive: false, regex: '^\\/test\\/excluded\\/relative\\/[^/]*\\.txt$'},
-             {positive: false, regex: '^\\/api\\/[^/][^/]*$'},
-             {positive: true, regex: '^http:\\/\\/example\\.com\\/included$'},
-             {positive: false, regex: '^http:\\/\\/example\\.com\\/excluded$'},
-           ],
-           hashTable: {
-             '/test/foo/test.html': '18f6f8eb7b1c23d2bb61bff028b83d867a9e4643',
-             '/test/index.html': 'a54d88e06612d820bc3be72877c74f257b561b19',
-             '/test/main.js': '41347a66676cdc0516934c76d9d13010df420f2c',
-             '/test/main.ts': '7d333e31f0bfc4f8152732bb211a93629484c035',
-             '/test/test.txt': '18f6f8eb7b1c23d2bb61bff028b83d867a9e4643'
-           }
-         });
-         done();
-       })
-        .catch(err => done.fail(err));
+
+    expect(config).toEqual({
+      configVersion: 1,
+      timestamp: 1234567890123,
+      appData: {
+        test: true,
+      },
+      index: '/test/index.html',
+      assetGroups: [{
+        name: 'test',
+        installMode: 'prefetch',
+        updateMode: 'prefetch',
+        urls: [
+          '/test/foo/test.html',
+          '/test/index.html',
+          '/test/main.js',
+          '/test/main.ts',
+          '/test/test.txt',
+        ],
+        patterns: [
+          '\\/absolute\\/.*',
+          '\\/some\\/url\\?with\\+escaped\\+chars',
+          '\\/test\\/relative\\/[^/]*\\.txt',
+        ],
+      }],
+      dataGroups: [{
+        name: 'other',
+        patterns: [
+          '\\/api\\/.*',
+          '\\/test\\/relapi\\/.*',
+          'https:\\/\\/example\\.com\\/(?:.+\\/)?[^/]*\\?with\\+escaped\\+chars',
+        ],
+        strategy: 'performance',
+        maxSize: 100,
+        maxAge: 259200000,
+        timeoutMs: 60000,
+        version: 1,
+      }],
+      navigationUrls: [
+        {positive: true, regex: '^\\/included\\/absolute\\/.*$'},
+        {positive: false, regex: '^\\/excluded\\/absolute\\/.*$'},
+        {positive: true, regex: '^\\/included\\/some\\/url\\/with\\+escaped\\+chars$'},
+        {positive: false, regex: '^\\/test\\/excluded\\/relative\\/[^/]*\\.txt$'},
+        {positive: false, regex: '^\\/api\\/[^/][^/]*$'},
+        {positive: true, regex: '^http:\\/\\/example\\.com\\/included$'},
+        {positive: false, regex: '^http:\\/\\/example\\.com\\/excluded$'},
+      ],
+      hashTable: {
+        '/test/foo/test.html': '18f6f8eb7b1c23d2bb61bff028b83d867a9e4643',
+        '/test/index.html': 'a54d88e06612d820bc3be72877c74f257b561b19',
+        '/test/main.js': '41347a66676cdc0516934c76d9d13010df420f2c',
+        '/test/main.ts': '7d333e31f0bfc4f8152732bb211a93629484c035',
+        '/test/test.txt': '18f6f8eb7b1c23d2bb61bff028b83d867a9e4643',
+      },
+    });
   });
 
-  it('uses default `navigationUrls` if not provided', done => {
+  it('uses default `navigationUrls` if not provided', async() => {
     const fs = new MockFilesystem({
       '/index.html': 'This is a test',
     });
     const gen = new Generator(fs, '/test');
-    const res = gen.process({
+    const config = await gen.process({
       index: '/index.html',
     });
-    res.then(config => {
-         expect(config).toEqual({
-           configVersion: 1,
-           timestamp: 1234567890123,
-           appData: undefined,
-           index: '/test/index.html',
-           assetGroups: [],
-           dataGroups: [],
-           navigationUrls: [
-             {positive: true, regex: '^\\/.*$'},
-             {positive: false, regex: '^\\/(?:.+\\/)?[^/]*\\.[^/]*$'},
-             {positive: false, regex: '^\\/(?:.+\\/)?[^/]*__[^/]*$'},
-             {positive: false, regex: '^\\/(?:.+\\/)?[^/]*__[^/]*\\/.*$'},
-           ],
-           hashTable: {}
-         });
-         done();
-       })
-        .catch(err => done.fail(err));
+
+    expect(config).toEqual({
+      configVersion: 1,
+      timestamp: 1234567890123,
+      appData: undefined,
+      index: '/test/index.html',
+      assetGroups: [],
+      dataGroups: [],
+      navigationUrls: [
+        {positive: true, regex: '^\\/.*$'},
+        {positive: false, regex: '^\\/(?:.+\\/)?[^/]*\\.[^/]*$'},
+        {positive: false, regex: '^\\/(?:.+\\/)?[^/]*__[^/]*$'},
+        {positive: false, regex: '^\\/(?:.+\\/)?[^/]*__[^/]*\\/.*$'},
+      ],
+      hashTable: {},
+    });
   });
 });