add babel config file

.gitignore

@@ -20,6 +20,7 @@
 *~
 ._*
 # but track
+!.babelrc.js
 !.browserslist
 !.editorconfig
 !.gitattributes

package.json

@@ -28,6 +28,9 @@
     "dist-build": "node src/build/dist-build.js",
     "dist-clean": "node src/build/dist-clean.js"
   },
+  "babel": {
+		"extends": "./src/build/babel.config.js"
+	},
   "engines": {
     "node": ">=16"
   },

src/build/babel.config.js

@@ -0,0 +1,12 @@
+module.exports = {
+	presets: [
+		[
+			'@babel/preset-env',
+			{
+				loose: true,
+				bugfixes: true,
+				modules: false,
+			},
+		],
+	],
+};