Track Angular polyfills

packages/knip/fixtures/plugins/angular/angular.json

@@ -20,9 +20,7 @@
             "outputPath": "dist/knip-angular-example",
             "index": "src/index.html",
             "main": "src/main.ts",
-            "polyfills": [
-              "zone.js"
-            ],
+            "polyfills": "src/polyfill.js",
             "tsConfig": "tsconfig.app.json",
             "inlineStyleLanguage": "scss",
             "assets": [
@@ -103,4 +101,4 @@
       }
     }
   }
-}
+}

packages/knip/fixtures/plugins/angular2/angular.json

@@ -105,4 +105,4 @@
       }
     }
   }
-}
+}

packages/knip/fixtures/plugins/angular3/angular.json

@@ -16,15 +16,19 @@
             "ssr": {
               "entry": "src/server.ts"
             },
-            "server": "src/main.server-for-non-prod.ts"
+            "server": "src/main.server-for-non-prod.ts",
+            "polyfills": [
+              "src/polyfill.js"
+            ]
           },
           "configurations": {
             "production": {
               "server": "src/main.server.ts",
               "scripts": ["src/script.js"]
             },
             "development": {
-              "scripts": ["src/script-for-non-prod.js"]
+              "scripts": ["src/script-for-non-prod.js"],
+              "polyfills": ["src/polyfill-for-non-prod.js"]
             }
           }
         },
@@ -43,4 +47,4 @@
       }
     }
   }
-}
+}

packages/knip/src/plugins/angular/index.ts

@@ -109,6 +109,12 @@ const entriesByOption = (opts: TargetOptions): EntriesByOption =>
               typeof scriptStringOrObject === 'string' ? scriptStringOrObject : scriptStringOrObject.input
             )
           : [],
+      polyfills:
+        'polyfills' in opts && opts.polyfills
+          ? Array.isArray(opts.polyfills)
+            ? opts.polyfills
+            : [opts.polyfills]
+          : [],
       fileReplacements:
         'fileReplacements' in opts && opts.fileReplacements && Array.isArray(opts.fileReplacements)
           ? (opts.fileReplacements as FileReplacementsBuildOption).map(fileReplacement =>

packages/knip/test/plugins/angular.test.ts

@@ -22,7 +22,7 @@ test('Find dependencies with the Angular plugin', async () => {
     devDependencies: 1,
     unlisted: 1,
     unresolved: 1,
-    processed: 3,
-    total: 3,
+    processed: 4,
+    total: 4,
   });
 });

packages/knip/test/plugins/angular3.test.ts

@@ -18,8 +18,8 @@ test('Find dependencies with the Angular plugin (non-production)', async () => {
   assert.deepEqual(counters, {
     ...baseCounters,
     devDependencies: 1,
-    processed: 8,
-    total: 8,
+    processed: 10,
+    total: 10,
   });
 });
 
@@ -32,7 +32,7 @@ test('Find dependencies with the Angular plugin (production)', async () => {
 
   assert.deepEqual(counters, {
     ...baseCounters,
-    processed: 4,
-    total: 4,
+    processed: 5,
+    total: 5,
   });
 });