diff --git a/.browserslistrc b/.browserslistrc
new file mode 100644
index 0000000..a912fb7
--- /dev/null
+++ b/.browserslistrc
@@ -0,0 +1,6 @@
+chrome >= 70
+chromeandroid >= 70
+ios >= 12
+safari >= 12
+edge >= 18
+firefox >= 68
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index eaf19f9..7cd2bbd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2690,6 +2690,57 @@
         "slash": "^3.0.0"
       }
     },
+    "babel-loader": {
+      "version": "8.2.2",
+      "resolved": "https://registry.npmjs.org/babel-loader/-/babel-loader-8.2.2.tgz",
+      "integrity": "sha512-JvTd0/D889PQBtUXJ2PXaKU/pjZDMtHA9V2ecm+eNRmmBCMR09a+fmpGTNwnJtFmFl5Ei7Vy47LjBb+L0wQ99g==",
+      "dev": true,
+      "requires": {
+        "find-cache-dir": "^3.3.1",
+        "loader-utils": "^1.4.0",
+        "make-dir": "^3.1.0",
+        "schema-utils": "^2.6.5"
+      },
+      "dependencies": {
+        "find-cache-dir": {
+          "version": "3.3.1",
+          "resolved": "https://registry.npmjs.org/find-cache-dir/-/find-cache-dir-3.3.1.tgz",
+          "integrity": "sha512-t2GDMt3oGC/v+BMwzmllWDuJF/xcDtE5j/fCGbqDD7OLuJkj0cfh1YSA5VKPvwMeLFLNDBkwOKZ2X85jGLVftQ==",
+          "dev": true,
+          "requires": {
+            "commondir": "^1.0.1",
+            "make-dir": "^3.0.2",
+            "pkg-dir": "^4.1.0"
+          }
+        },
+        "make-dir": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-3.1.0.tgz",
+          "integrity": "sha512-g3FeP20LNwhALb/6Cz6Dd4F2ngze0jz7tbzrD2wAV+o9FeNHe4rL+yK2md0J/fiSf1sa1ADhXqi5+oVwOM/eGw==",
+          "dev": true,
+          "requires": {
+            "semver": "^6.0.0"
+          }
+        },
+        "schema-utils": {
+          "version": "2.7.1",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-2.7.1.tgz",
+          "integrity": "sha512-SHiNtMOUGWBQJwzISiVYKu82GiV4QYGePp3odlY1tuKO7gPtphAT5R/py0fA6xtbgLL/RvtJZnU9b8s0F1q0Xg==",
+          "dev": true,
+          "requires": {
+            "@types/json-schema": "^7.0.5",
+            "ajv": "^6.12.4",
+            "ajv-keywords": "^3.5.2"
+          }
+        },
+        "semver": {
+          "version": "6.3.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.0.tgz",
+          "integrity": "sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==",
+          "dev": true
+        }
+      }
+    },
     "babel-plugin-dynamic-import-node": {
       "version": "2.3.3",
       "resolved": "https://registry.npmjs.org/babel-plugin-dynamic-import-node/-/babel-plugin-dynamic-import-node-2.3.3.tgz",
diff --git a/package.json b/package.json
index 0ced927..ca801da 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "@babel/core": "^7.15.0",
     "@babel/preset-env": "^7.14.8",
     "babel-jest": "^27.0.6",
+    "babel-loader": "^8.2.2",
     "copy-webpack-plugin": "^6.4.1",
     "css-loader": "^5.2.7",
     "file-loader": "^6.2.0",
diff --git a/webpack.config.js b/webpack.config.js
index e2ee0ca..eb0a3dc 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -36,6 +36,18 @@ const makeScaffolding = ({full}) => ({
   },
   module: {
     rules: [
+      {
+        test: /\.jsx?$/,
+        loader: 'babel-loader',
+        include: [
+          path.resolve(__dirname, 'src'),
+          /node_modules[\\/]scratch-[^\\/]+[\\/]src/
+        ],
+        options: {
+          babelrc: false,
+          presets: ['@babel/preset-env']
+        }
+      },
       {
         test: /\.(svg|png)$/i,
         use: [{