build: no longer add pure annotations to es5 bundles

tools/package-tools/build-release.ts

@@ -1,7 +1,6 @@
 import {join} from 'path';
 import {mkdirpSync} from 'fs-extra';
 import {copyFiles} from './copy-files';
-import {addPureAnnotationsToFile} from './pure-annotations';
 import {replaceVersionPlaceholders} from './version-placeholders';
 import {inlinePackageMetadataFiles} from './metadata-inlining';
 import {createTypingsReexportFile} from './typings-reexport';
@@ -43,8 +42,6 @@ export function composeRelease(packageName: string, options: ComposeReleaseOptio
   if (options.useSecondaryEntryPoints) {
     createFilesForSecondaryEntryPoint(packageName, packagePath, releasePath);
   }
-
-  addPureAnnotationsToFile(join(releasePath, '@angular', `${packageName}.es5.js`));
 }
 
 /** Creates files necessary for a secondary entry-point. */

tools/package-tools/copy-files.ts

@@ -5,7 +5,7 @@ import {join, dirname} from 'path';
 /** Function to copy files that match a glob to another directory. */
 export function copyFiles(fromPath: string, fileGlob: string, outDir: string) {
   glob(fileGlob, {cwd: fromPath}).forEach(filePath => {
-    let fileDestPath = join(outDir, filePath);
+    const fileDestPath = join(outDir, filePath);
     mkdirpSync(dirname(fileDestPath));
     copySync(join(fromPath, filePath), fileDestPath);
   });

tools/package-tools/entry-point-package-json.ts

@@ -12,5 +12,5 @@ export function createEntryPointPackageJson(destDir: string, packageName: string
     es2015: `../@angular/${packageName}/${entryPointName}.js`,
   };
 
-  writeFileSync(join(destDir, 'package.json'), JSON.stringify(content), 'utf-8');
+  writeFileSync(join(destDir, 'package.json'), JSON.stringify(content, null, 2), 'utf-8');
 }

tools/package-tools/metadata-reexport.ts

@@ -3,11 +3,13 @@ import {join} from 'path';
 
 /** Creates a metadata file that re-exports the metadata bundle inside of the typings. */
 export function createMetadataReexportFile(destDir: string, from: string, name: string) {
-  const metadataReExport = `{
-    "__symbolic":"module",
-    "version":3,"metadata":{},
-    "exports":[{"from":"${from}"}],
-    "flatModuleIndexRedirect": true
-  }`;
-  writeFileSync(join(destDir, `${name}.metadata.json`), metadataReExport, 'utf-8');
+  const metadataJsonContent = JSON.stringify({
+    __symbolic: 'module',
+    version: 3,
+    metadata: {},
+    exports: [{from}],
+    flatModuleIndexRedirect: true
+  }, null, 2);
+
+  writeFileSync(join(destDir, `${name}.metadata.json`), metadataJsonContent, 'utf-8');
 }