fix(nf): don't patch @angular/build if it is not present

Author: manfredsteyer

libs/native-federation/src/schematics/init/schematic.ts

@@ -14,7 +14,7 @@ import { NodePackageInstallTask } from '@angular-devkit/schematics/tasks';
 import { strings } from '@angular-devkit/core';
 import { MfSchematicSchema } from './schema';
 
-import { patchAngularBuildPackageJson } from '../../utils/patch-angular-build';
+import { patchAngularBuildPackageJson, privateEntrySrc } from '../../utils/patch-angular-build';
 
 import {
   addPackageJsonDependency,
@@ -117,14 +117,26 @@ export default function config(options: MfSchematicSchema): Rule {
 }
 
 export function patchAngularBuild(tree) {
+  const packagePath = 'node_modules/@angular/build/package.json';
+  const privatePath = 'node_modules/@angular/build/private.js';
+
+  if (!tree.exists(packagePath)) {
+    return;
+  }
+
   const packageJson = JSON.parse(
-    tree.read('node_modules/@angular/build/package.json')
+    tree.read(packagePath)
   );
   patchAngularBuildPackageJson(packageJson);
   tree.overwrite(
-    'node_modules/@angular/build/package.json',
+    packagePath,
     JSON.stringify(packageJson, null, 2)
   );
+  tree.overwrite(
+    privatePath,
+    privateEntrySrc
+  );
+
 }
 
 function updateWorkspaceConfig(

libs/native-federation/src/utils/patch-angular-build.ts

@@ -1,6 +1,10 @@
 import * as path from 'path';
 import * as fs from 'fs';
 
+export const privateEntrySrc = `
+exports = require('./src/private.js');
+`;
+
 export function patchAngularBuildPackageJson(packageJson: unknown): void {
   const exportsMap = packageJson['exports'];
 
@@ -23,11 +27,21 @@ export function patchAngularBuild(workspaceRoot: string): void {
     'node_modules/@angular/build/package.json'
   );
 
+  const privatePath = path.join(
+    workspaceRoot,
+    'node_modules/@angular/build/private.js'
+  );
+
+  if (!fs.existsSync(packagePath)) {
+    return;
+  }
+
   const packageJson = JSON.parse(fs.readFileSync(packagePath, 'utf-8'));
 
   patchAngularBuildPackageJson(packageJson);
 
   fs.writeFileSync(packagePath, JSON.stringify(packageJson, null, 2));
+  fs.writeFileSync(privatePath, privateEntrySrc);
 
   console.log('@angular/build/package.json patched');
 }