diff --git a/package.json b/package.json
index b087b447..53881ffd 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "bundle:standalone": "webpack --env production --env standalone --mode=production",
     "bundle:lib": "webpack --mode=production && npm run declarations",
     "bundle:browser": "webpack --env production --env browser --mode=production",
-    "bundle": "npm run bundle:clean && npm run bundle:lib && npm run bundle:standalone && npm run bundle:browser",
+    "bundle": "npm run bundle:clean && npm run bundle:lib && npm run bundle:browser && npm run bundle:standalone",
     "declarations": "tsc --emitDeclarationOnly -p tsconfig.lib.json && cp -R src/types typings/",
     "stats": "webpack --env production --env standalone --json --profile --mode=production > stats.json",
     "prettier": "prettier --write \"cli/index.ts\" \"src/**/*.{ts,tsx}\"",
diff --git a/src/fs.empty.js b/src/fs.empty.js
deleted file mode 100644
index 7c6d6c73..00000000
--- a/src/fs.empty.js
+++ /dev/null
@@ -1 +0,0 @@
-module.exports = {}
\ No newline at end of file
diff --git a/src/services/SearchWorker.worker.ts b/src/services/SearchWorker.worker.ts
index a90287b5..a4a6da4b 100644
--- a/src/services/SearchWorker.worker.ts
+++ b/src/services/SearchWorker.worker.ts
@@ -1,12 +1,5 @@
 import * as lunr from 'lunr';
 
-try {
-  // tslint:disable-next-line
-  require('core-js/es/promise'); // bundle into worker
-} catch (_) {
-  // nope
-}
-
 /* just for better typings */
 export default class Worker {
   add: typeof add = add;
diff --git a/webpack.config.ts b/webpack.config.ts
index 0d5ecf8f..bf0e013f 100644
--- a/webpack.config.ts
+++ b/webpack.config.ts
@@ -47,12 +47,12 @@ export default (env: { standalone?: boolean, browser?: boolean } = {}) => ({
     fallback: {
       path: require.resolve('path-browserify'),
       http: false,
-      fs: env.browser ? path.resolve(__dirname, 'src/fs.empty.js') : false,
-      os: false,
+      fs: env.browser ? path.resolve(__dirname, 'src/empty.js') : false,
+      os: path.resolve(__dirname, 'src/empty.js'),
+      tty: path.resolve(__dirname, 'src/empty.js'),
     }
   },
   performance: false,
-  // target: 'node',
   externalsPresets: env.standalone || env.browser ? {} : { node: true },
   externals: env.standalone
     ? {