fix(@schematics/angular): exclusively list the files in tsconfigs

With the omission of `includes` or `files` in tsconfig files tsc will pick up all the files under the rootDir and make them as part of the compilation. In certain cases, redundant files will be picked up which will cause a slower compilations.

Related to: TOOL-949

Author: alan-agius4

packages/schematics/angular/application/files/tsconfig.app.json.template

@@ -4,13 +4,20 @@
     "outDir": "<%= relativePathToWorkspaceRoot %>/out-tsc/app",
     "types": []
   },
+  "files": [
+    "src/main.ts",
+    "src/polyfills.ts"
+  ],<% if (!enableIvy) { %>
   "include": [
     "src/**/*.ts"
   ],
   "exclude": [
     "src/test.ts",
     "src/**/*.spec.ts"
-  ]<% if (enableIvy) { %>,
+  ]<% } %><% if (enableIvy) { %>
+  "include": [
+    "src/**/*.d.ts"
+  ],
   "angularCompilerOptions": {
     "enableIvy": true
   }<% } %>

packages/schematics/angular/application/index_spec.ts

@@ -232,6 +232,27 @@ describe('Application Schematic', () => {
     expect(workspace.projects.foo.architect.build.options.aot).toEqual(true);
   });
 
+  it('should set the right files, exclude, include in the tsconfig for VE projects', async () => {
+    const tree = await schematicRunner.runSchematicAsync('application', defaultOptions, workspaceTree)
+      .toPromise();
+    const path = '/projects/foo/tsconfig.app.json';
+    const tsConfig = JSON.parse(tree.readContent(path));
+    expect(tsConfig.files).toEqual(['src/main.ts', 'src/polyfills.ts']);
+    expect(tsConfig.exclude).toEqual(['src/test.ts', 'src/**/*.spec.ts']);
+    expect(tsConfig.include).toEqual(['src/**/*.ts']);
+  });
+
+  it('should set the right files, exclude, include in the tsconfig for Ivy projects', async () => {
+    const options = { ...defaultOptions, enableIvy: true };
+    const tree = await schematicRunner.runSchematicAsync('application', options, workspaceTree)
+      .toPromise();
+    const path = '/projects/foo/tsconfig.app.json';
+    const tsConfig = JSON.parse(tree.readContent(path));
+    expect(tsConfig.files).toEqual(['src/main.ts', 'src/polyfills.ts']);
+    expect(tsConfig.exclude).toBeUndefined();
+    expect(tsConfig.include).toEqual(['src/**/*.d.ts']);
+  });
+
   describe(`update package.json`, () => {
     it(`should add build-angular to devDependencies`, async () => {
       const tree = await schematicRunner.runSchematicAsync('application', defaultOptions, workspaceTree)

packages/schematics/angular/universal/files/root/__tsconfigFileName__.json.template

@@ -3,6 +3,9 @@
   "compilerOptions": {
     "outDir": "<%= outDir %>-server"
   },
+  "files": [
+    "src/main.server.ts"
+  ],
   "angularCompilerOptions": {
     "entryModule": "./<%= rootInSrc ? '' : 'src/' %><%= appDir %>/<%= stripTsExtension(rootModuleFileName) %>#<%= rootModuleClassName %>"
   }

packages/schematics/angular/universal/index_spec.ts

@@ -91,6 +91,9 @@ describe('Universal Schematic', () => {
       compilerOptions: {
         outDir: './out-tsc/app-server',
       },
+      files: [
+        "src/main.server.ts"
+      ],
       angularCompilerOptions: {
         entryModule: './src/app/app.server.module#AppServerModule',
       },
@@ -111,6 +114,9 @@ describe('Universal Schematic', () => {
       compilerOptions: {
         outDir: '../../out-tsc/app-server',
       },
+      files: [
+        "src/main.server.ts"
+      ],
       angularCompilerOptions: {
         entryModule: './src/app/app.server.module#AppServerModule',
       },