Set modules.

babel.config.js

@@ -1,9 +1,21 @@
 module.exports = {
     presets: [
-        '@babel/preset-env',
-        '@babel/preset-react',
+        ["@babel/preset-env", {
+            targets: {
+                esmodules: true,
+            },
+        }],
+        "@babel/preset-react",
     ],
     plugins: [
-        '@babel/plugin-transform-runtime'
-    ]
+        "@babel/plugin-syntax-export-default-from",
+        "@babel/plugin-transform-runtime",
+        ["module-resolver", {
+            root: ["./src"],
+            alias: {
+                test: "./test",
+                underscore: "lodash",
+            },
+        }],
+    ],
 };