build(docs-infra): align config with what cli generates for new apps (#32923)

This is mainly to avoid some warning when building the app, such as:

```
WARNING in .../angular/aio/src/environments/environment.archive.ts is
part of the TypeScript compilation but it's unused.
Add only entry points to the 'files' or 'include' properties in your
tsconfig.
```

(Not turning on `fullTemplateTypeCheck` due to lots of errors.)

PR Close #32923

aio/scripts/switch-to-viewengine.js

@@ -7,7 +7,7 @@ const {join, resolve} = require('path');
 
 // Constants
 const ROOT_DIR = resolve(__dirname, '..');
-const NG_JSON = join(ROOT_DIR, 'angular.json');
+const TS_CONFIG_PATH = join(ROOT_DIR, 'tsconfig.json');
 const NG_COMPILER_OPTS = {
   angularCompilerOptions: {
     enableIvy: false,
@@ -19,21 +19,17 @@ _main(process.argv.slice(2));
 
 // Functions - Definitions
 function _main() {
-  // Detect path to `tsconfig.app.json`.
-  const ngConfig = parse(readFileSync(NG_JSON, 'utf8'));
-  const tsConfigPath = join(ROOT_DIR, ngConfig.projects.site.architect.build.options.tsConfig);
-
   // Enable ViewIngine/Disable Ivy in TS config.
-  console.log(`\nModifying \`${tsConfigPath}\`...`);
-  const oldTsConfigStr = readFileSync(tsConfigPath, 'utf8');
+  console.log(`\nModifying \`${TS_CONFIG_PATH}\`...`);
+  const oldTsConfigStr = readFileSync(TS_CONFIG_PATH, 'utf8');
   const oldTsConfigObj = parse(oldTsConfigStr);
   const newTsConfigObj = extend(true, oldTsConfigObj, NG_COMPILER_OPTS);
   const newTsConfigStr = `${JSON.stringify(newTsConfigObj, null, 2)}\n`;
   console.log(`\nNew config: ${newTsConfigStr}`);
-  writeFileSync(tsConfigPath, newTsConfigStr);
+  writeFileSync(TS_CONFIG_PATH, newTsConfigStr);
 
   // Done.
   console.log('\nReady to build with ViewEngine!');
   console.log('(To switch back to Ivy (with packages from npm), undo the changes in ' +
-              `\`${tsConfigPath}\` and run \`yarn aio-use-npm && yarn example-use-npm\`.)`);
+              `\`${TS_CONFIG_PATH}\` and run \`yarn aio-use-npm && yarn example-use-npm\`.)`);
 }

aio/tsconfig.app.json

@@ -4,16 +4,11 @@
     "outDir": "./out-tsc/app",
     "types": []
   },
+  "files": [
+    "src/main.ts",
+    "src/polyfills.ts"
+  ],
   "include": [
-    "src/**/*.ts"
-  ],
-  "exclude": [
-    "src/test.ts",
-    "src/testing/**/*",
-    "src/**/*.spec.ts",
-    "src/**/*.worker.ts"
-  ],
-  "angularCompilerOptions": {
-    "disableTypeScriptVersionCheck": true
-  }
+    "src/**/*.d.ts"
+  ]
 }

aio/tsconfig.json

@@ -7,7 +7,6 @@
     "declaration": false,
     "module": "esnext",
     "moduleResolution": "node",
-    "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
     "importHelpers": true,
     "target": "es2015",
@@ -33,4 +32,10 @@
     "scripts",
     "tools"
   ],
+  "angularCompilerOptions": {
+    "disableTypeScriptVersionCheck": true,
+    // TODO: Fix template type errors and enable.
+    // "fullTemplateTypeCheck": true,
+    "strictInjectionParameters": true
+  }
 }