diff --git a/.eslintrc.json b/.eslintrc.json
index cdf57c6..a506e1e 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -88,6 +88,7 @@
   },
   "ignorePatterns": [
     "jest.config.js",
+    "scripts/**/*",
     "webpack.config.js",
     "dist/**/*",
     "public/**/*",
diff --git a/package.json b/package.json
index 22e05cd..fc062bc 100644
--- a/package.json
+++ b/package.json
@@ -8,13 +8,13 @@
   "main": "dist/main.js",
   "scripts": {
     "test": "jest --verbose --runInBand",
-    "clean": "(test ! -d dist || rm -r dist)",
-    "prepareSources": "cp package.json src/",
+    "clean": "node scripts/clean.js",
+    "prepare-sources": "node scripts/prepare-sources.js",
     "compile": "yarn clean && tsc",
-    "build": "yarn prepareSources && yarn compile && webpack --mode production",
-    "dev": "yarn prepareSources && concurrently -k -n \"Typescript,Node,Webpack,Maildev\" -p \"[{name}]\" -c \"blue,green,red,yellow\" \"tsc --watch\" \"nodemon\" \"webpack --watch --mode development\" \"maildev\"",
+    "build": "yarn prepare-sources && yarn compile && webpack --mode production",
+    "dev": "yarn prepare-sources && concurrently -k -n \"Typescript,Node,Webpack,Maildev\" -p \"[{name}]\" -c \"blue,green,red,yellow\" \"tsc --watch\" \"nodemon\" \"webpack --watch --mode development\" \"maildev\"",
     "start": "yarn build && node",
-    "lint": "eslint . --ext .js,.jsx,.ts,.tsx"
+    "lint": "eslint ."
   },
   "devDependencies": {
     "@babel/core": "^7.9.0",
diff --git a/scripts/clean.js b/scripts/clean.js
new file mode 100644
index 0000000..d5ef093
--- /dev/null
+++ b/scripts/clean.js
@@ -0,0 +1,10 @@
+const fs = require('fs');
+
+[
+    'dist',
+].forEach(file => {
+    if (fs.existsSync(file)) {
+        console.log('Cleaning', file, '...');
+        fs.rmSync(file, {recursive: true});
+    }
+});
diff --git a/scripts/prepare-sources.js b/scripts/prepare-sources.js
new file mode 100644
index 0000000..a78c2f3
--- /dev/null
+++ b/scripts/prepare-sources.js
@@ -0,0 +1,4 @@
+const fs = require('fs');
+const path = require('path');
+
+fs.copyFileSync('package.json', path.join('src', 'package.json'));