From e4072752bca4c8dd9ba059d809a3b334fe557c9a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicol=C3=B2=20Ribaudo?= <nicolo.ribaudo@gmail.com>
Date: Mon, 15 Apr 2019 20:01:16 +0200
Subject: [PATCH] Transpile babel-polyfill to es5, instead of targeting node 6
 (#9812)

* Transpile babel-polyfill to es5, instead of targeting node 6

* Update babel.config.js
---
 babel.config.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/babel.config.js b/babel.config.js
index 97e0313da1..c68f3f5bc4 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -5,11 +5,12 @@ module.exports = function(api) {
 
   const includeCoverage = process.env.BABEL_COVERAGE === "true";
 
-  const envOpts = {
+  const envOptsNoTargets = {
     loose: true,
     modules: false,
     exclude: ["transform-typeof-symbol"],
   };
+  const envOpts = Object.assign({}, envOptsNoTargets);
 
   let convertESM = true;
   let ignoreLib = true;
@@ -97,6 +98,11 @@ module.exports = function(api) {
           convertESM ? "@babel/transform-modules-commonjs" : null,
         ].filter(Boolean),
       },
+      {
+        test: "./packages/babel-polyfill",
+        presets: [["@babel/env", envOptsNoTargets]],
+        plugins: [["@babel/transform-modules-commonjs", { lazy: false }]],
+      },
       {
         // The vast majority of our src files are modules, but we use
         // unambiguous to keep things simple until we get around to renaming