From ccf909ee81c2b3d5e80dc58a32632e398cf10962 Mon Sep 17 00:00:00 2001
From: Felix Hamann <felix.hamann@satellytes.com>
Date: Tue, 25 Oct 2022 10:22:37 +0200
Subject: [PATCH] feat(@schematics/angular): add sideEffects:false to library
 package.json

---
 .../angular/library/files/package.json.template           | 5 +++--
 packages/schematics/angular/library/index_spec.ts         | 8 ++++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/packages/schematics/angular/library/files/package.json.template b/packages/schematics/angular/library/files/package.json.template
index dde7d4962122..1d50c8cbcc34 100644
--- a/packages/schematics/angular/library/files/package.json.template
+++ b/packages/schematics/angular/library/files/package.json.template
@@ -7,5 +7,6 @@
   },
   "dependencies": {
     "tslib": "^<%= tsLibLatestVersion %>"
-  }
-}
\ No newline at end of file
+  },
+  "sideEffects": false
+}
diff --git a/packages/schematics/angular/library/index_spec.ts b/packages/schematics/angular/library/index_spec.ts
index 8e5cc7d1e398..7a009b6ac236 100644
--- a/packages/schematics/angular/library/index_spec.ts
+++ b/packages/schematics/angular/library/index_spec.ts
@@ -126,6 +126,14 @@ describe('Library Schematic', () => {
     expect(fileContent.peerDependencies['@angular/core']).toBe(`^${angularVersion}`);
   });
 
+  it('should add sideEffects: false flag to package.json named "foo"', async () => {
+    const tree = await schematicRunner
+      .runSchematicAsync('library', defaultOptions, workspaceTree)
+      .toPromise();
+    const fileContent = getFileContent(tree, '/projects/foo/package.json');
+    expect(fileContent).toMatch(/"sideEffects": false/);
+  });
+
   it('should create a README.md named "foo"', async () => {
     const tree = await schematicRunner
       .runSchematicAsync('library', defaultOptions, workspaceTree)