From 929708f4dbe65d7e5e4973a74d590c143b441e50 Mon Sep 17 00:00:00 2001
From: Yannick Ihmels <yannick@ihmels.org>
Date: Wed, 10 Jul 2019 14:15:21 +0200
Subject: [PATCH] Add babel option to pre-include polyfills

---
 index.js             | 3 +++
 lib/WebpackConfig.js | 1 +
 lib/loaders/babel.js | 1 +
 3 files changed, 5 insertions(+)

diff --git a/index.js b/index.js
index ee6232f7..b54a794f 100644
--- a/index.js
+++ b/index.js
@@ -848,6 +848,9 @@ class Encore {
      *     // core-js to your project using Yarn or npm and
      *     // inform Babel of the version it will use.
      *     corejs: 3
+     *
+     *     // pre-include needed polyfills
+     *     polyfills: []
      * });
      * ```
      *
diff --git a/lib/WebpackConfig.js b/lib/WebpackConfig.js
index 0455718d..5678a3e7 100644
--- a/lib/WebpackConfig.js
+++ b/lib/WebpackConfig.js
@@ -128,6 +128,7 @@ class WebpackConfig {
             exclude: /(node_modules|bower_components)/,
             useBuiltIns: false,
             corejs: null,
+            polyfills: [],
         };
         this.vueOptions = {
             useJsx: false,
diff --git a/lib/loaders/babel.js b/lib/loaders/babel.js
index 6ed2e30b..31469682 100644
--- a/lib/loaders/babel.js
+++ b/lib/loaders/babel.js
@@ -45,6 +45,7 @@ module.exports = {
                 forceAllTransforms: webpackConfig.isProduction(),
                 useBuiltIns: webpackConfig.babelOptions.useBuiltIns,
                 corejs: webpackConfig.babelOptions.corejs,
+                include: webpackConfig.babelOptions.polyfills,
             };
 
             Object.assign(babelConfig, {