From f572f4230a740d689ae0f10378521f4bd8a9a81e Mon Sep 17 00:00:00 2001
From: Chunpeng Huo <huocp@me.com>
Date: Fri, 29 Mar 2019 15:47:30 +1100
Subject: [PATCH] chore(skeleton): remove core-js as the import is too late for
 IE11

Because src/main is executed after aurelia-bootstrapper. Promise has to be polyfilled before aurelia-bootstrapper.
---
 lib/dependencies.json                     | 1 -
 skeleton/common/package.json              | 1 -
 skeleton/plugin/dev-app/main.ext          | 3 ++-
 skeleton/scaffold-minimum/src/main.ext    | 3 ++-
 skeleton/scaffold-navigation/src/main.ext | 3 ++-
 5 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/lib/dependencies.json b/lib/dependencies.json
index 2dfd4c56e..7ed0d4442 100644
--- a/lib/dependencies.json
+++ b/lib/dependencies.json
@@ -29,7 +29,6 @@
   "clean-webpack-plugin": "^1.0.1",
   "connect-history-api-fallback": "^1.6.0",
   "copy-webpack-plugin": "^5.0.0",
-  "core-js": "^3.0.0",
   "cross-env": "^5.2.0",
   "cssnano": "^4.1.10",
   "css-loader": "^1.0.0",
diff --git a/skeleton/common/package.json b/skeleton/common/package.json
index b99ba72ed..a40606ff4 100644
--- a/skeleton/common/package.json
+++ b/skeleton/common/package.json
@@ -21,7 +21,6 @@
     "aurelia-cli": "",
     "aurelia-testing": "",
     "aurelia-tools": "",
-    "core-js": "",
     "gulp": "",
     "minimatch": "",
     "through2": "",
diff --git a/skeleton/plugin/dev-app/main.ext b/skeleton/plugin/dev-app/main.ext
index 73dae5e32..dfc680e33 100644
--- a/skeleton/plugin/dev-app/main.ext
+++ b/skeleton/plugin/dev-app/main.ext
@@ -1,5 +1,6 @@
-import 'core-js/stable';
 // @if feat.babel
+// regenerator-runtime is to support async/await syntax in ESNext.
+// If you don't use async/await, you can remove regenerator-runtime.
 import 'regenerator-runtime/runtime';
 // @endif
 // @if feat.typescript
diff --git a/skeleton/scaffold-minimum/src/main.ext b/skeleton/scaffold-minimum/src/main.ext
index 19380872c..7ce184a19 100644
--- a/skeleton/scaffold-minimum/src/main.ext
+++ b/skeleton/scaffold-minimum/src/main.ext
@@ -1,5 +1,6 @@
-import 'core-js/stable';
 // @if feat.babel
+// regenerator-runtime is to support async/await syntax in ESNext.
+// If you don't use async/await, you can remove regenerator-runtime.
 import 'regenerator-runtime/runtime';
 // @endif
 // @if feat.typescript
diff --git a/skeleton/scaffold-navigation/src/main.ext b/skeleton/scaffold-navigation/src/main.ext
index e4dbe5148..7d27096d7 100644
--- a/skeleton/scaffold-navigation/src/main.ext
+++ b/skeleton/scaffold-navigation/src/main.ext
@@ -1,5 +1,6 @@
-import 'core-js/stable';
 // @if feat.babel
+// regenerator-runtime is to support async/await syntax in ESNext.
+// If you don't use async/await, you can remove regenerator-runtime.
 import 'regenerator-runtime/runtime';
 // @endif
 import 'bootstrap';