feat: search options (#540)

* feat: search options

* feat: sanitize folder names

* fix: add cursor: pointer to switch

* fix: explicitly make the search bar a text input

* refactor: remove magic number

* refactor: extract Switch component to its own file

* refactor: split AppState into multiple files

* refactor: review comments

webpack.prod.js

@@ -1,7 +1,9 @@
-const merge = require('webpack-merge');
+const { merge } = require('webpack-merge');
 const config = require('./webpack.config.js');
 
-module.exports = (env, argv) => merge(config(env, argv), {
-  mode: 'production',
-  devtool: 'source-map',
-});
+module.exports = (env, argv) => {
+  return merge(config(env, argv), {
+    mode: 'production',
+    devtool: 'source-map',
+  });
+};