build: roll up to named .js files rather than 'index.js' (#19190)

PR Close #19190

packages/core/package.json

@@ -3,9 +3,9 @@
   "version": "0.0.0-PLACEHOLDER",
   "description": "Angular - the core framework",
   "main": "./bundles/core.umd.js",
-  "module": "./esm5/index.js",
-  "es2015": "./esm15/index.js",
-  "typings": "./index.d.ts",
+  "module": "./esm5/core.js",
+  "es2015": "./esm2015/core.js",
+  "typings": "./core.d.ts",
   "author": "angular",
   "license": "MIT",
   "dependencies": {

packages/core/rollup.config.js

@@ -19,7 +19,7 @@ const globals = {
 };
 
 export default {
-  entry: '../../dist/packages-dist/core/esm5/index.js',
+  entry: '../../dist/packages-dist/core/esm5/core.js',
   dest: '../../dist/packages-dist/core/bundles/core.umd.js',
   format: 'umd',
   exports: 'named',

packages/core/testing/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@angular/core/testing",
-  "typings": "./index.d.ts",
+  "typings": "./testing.d.ts",
   "main": "../bundles/core-testing.umd.js",
-  "module": "../esm5/testing/index.js",
-  "es2015": "../esm15/testing/index.js"
+  "module": "../esm5/testing.js",
+  "es2015": "../esm2015/testing.js"
 }

packages/core/testing/rollup.config.js

@@ -16,7 +16,7 @@ const globals = {
 };
 
 export default {
-  entry: '../../../dist/packages-dist/core/esm5/testing/index.js',
+  entry: '../../../dist/packages-dist/core/esm5/testing.js',
   dest: '../../../dist/packages-dist/core/bundles/core-testing.umd.js',
   format: 'umd',
   exports: 'named',

packages/core/testing/tsconfig-build.json

@@ -19,7 +19,7 @@
 
   "angularCompilerOptions": {
     "strictMetadataEmit": true,
-    "flatModuleOutFile": "index.js",
+    "flatModuleOutFile": "testing.js",
     "flatModuleId": "@angular/core/testing"
   }
 }

packages/core/tsconfig-build.json

@@ -19,7 +19,7 @@
   "angularCompilerOptions": {
     "annotateForClosureCompiler": true,
     "strictMetadataEmit": true,
-    "flatModuleOutFile": "index.js",
+    "flatModuleOutFile": "core.js",
     "flatModuleId": "@angular/core"
   }
 }