Set Babel’s IE target from 9 to 11

sampi · Apr 22, 2018 · e1c0f45 · e1c0f45
1 parent 14e78d5
commit e1c0f45
Show file tree

Hide file tree

Showing 3 changed files with 22 additions and 0 deletions.
diff --git 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
@@ -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
@@ -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);