Replace to shakapacker from webpacker

config/webpack/environments/development.js

@@ -0,0 +1,39 @@
+const { env, merge } = require('shakapacker');
+const markRule = require('../rules/mark');
+const baseConfig = require('./base');
+
+/** @type {import('webpack').Configuration} */
+let developmentConfig = {
+  module: {
+    rules: [
+      markRule,
+    ],
+  },
+};
+
+if (env.runningWebpackDevServer) {
+  developmentConfig = merge(developmentConfig, {
+    devServer: {
+      devMiddleware: {
+        writeToDisk: filePath => /ocr/.test(filePath),
+      },
+    },
+  });
+}
+
+if (process.env.VAGRANT) {
+  developmentConfig = merge(developmentConfig, {
+    devServer: {
+      static: {
+        watch: {
+          // If we are in Vagrant, we can't rely on inotify to update us with changed
+          // files, so we must poll instead. Here, we poll every second to see if
+          // anything has changed.
+          poll: 1_000,
+        },
+      },
+    },
+  });
+}
+
+module.exports = merge({}, baseConfig, developmentConfig);