From e1c0f450ef12b45453a26212440a0af4c2e833b2 Mon Sep 17 00:00:00 2001
From: Daniel Spitzer <dsp@tradeshift.com>
Date: Sun, 22 Apr 2018 11:58:36 +0200
Subject: [PATCH] =?UTF-8?q?Set=20Babel=E2=80=99s=20IE=20target=20from=209?=
 =?UTF-8?q?=20to=2011?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 scripts/build.js           |  4 ++++
 scripts/patch/babelIE11.js | 14 ++++++++++++++
 scripts/start.js           |  4 ++++
 3 files changed, 22 insertions(+)
 create mode 100644 scripts/patch/babelIE11.js

diff --git a/scripts/build.js b/scripts/build.js
index af657ee..15301d1 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -3,6 +3,10 @@
 process.env.BABEL_ENV = 'production';
 process.env.NODE_ENV = 'production';
 
+const babelIE11 = require('./patch/babelIE11');
+const babelConfig = require('babel-preset-react-app');
+babelIE11(babelConfig);
+
 const webpackPreact = require('./patch/webpackPreact');
 const webpackConfig = require('react-scripts/config/webpack.config.prod');
 webpackPreact(webpackConfig);
diff --git a/scripts/patch/babelIE11.js b/scripts/patch/babelIE11.js
new file mode 100644
index 0000000..94b2197
--- /dev/null
+++ b/scripts/patch/babelIE11.js
@@ -0,0 +1,14 @@
+// Hack babel to build for IE11 instead of IE9
+module.exports = babelConfig => {
+	const presets = babelConfig.presets;
+	presets.forEach((preset, i) => {
+		if (!Array.isArray(preset)) {
+			return;
+		}
+		preset.forEach((p, j) => {
+			if (p.targets && p.targets.ie) {
+				presets[i][j].ie = 11;
+			}
+		});
+	});
+};
diff --git a/scripts/start.js b/scripts/start.js
index 75f5258..2ab95aa 100644
--- a/scripts/start.js
+++ b/scripts/start.js
@@ -3,6 +3,10 @@
 process.env.BABEL_ENV = 'development';
 process.env.NODE_ENV = 'development';
 
+const babelIE11 = require('./patch/babelIE11');
+const babelConfig = require('babel-preset-react-app');
+babelIE11(babelConfig);
+
 const webpackPreact = require('./patch/webpackPreact');
 const webpackConfig = require('react-scripts/config/webpack.config.dev');
 webpackPreact(webpackConfig);