diff --git a/.gitignore b/.gitignore
index 0a76ea0e..79efd765 100644
--- a/.gitignore
+++ b/.gitignore
@@ -123,7 +123,6 @@ fabric.properties
 
 # End of https://www.gitignore.io/api/node,webstorm
 
-package-lock.json
 yarn.lock
 
 osm.tar.xz
diff --git a/README.md b/README.md
index 77bb095e..14349512 100644
--- a/README.md
+++ b/README.md
@@ -20,19 +20,18 @@ Click or tab: Place Pixel
 ## Build
 ### Requirements
 - [nodejs environment](https://nodejs.org/en/)
-- [yarn](https://yarnpkg.com/lang/en/docs/install/#debian-stable)
 - (optional) [babel-cli](https://www.npmjs.com/package/babel-cli) (`sudo npm install --global babel-cli`)
 
 ### Building
 Make sure that you have rights to g++ (if not, run as root and then `chown username:username -R .` after build)
 
 ```
-yarn install
-yarn run build --release
+npm install
+npm run build
 ```
 All needed files to run it got created in `./build`
 #### Note:
-If yarn install fails with "unable to connect to github.com" set:
+If npm install fails with "unable to connect to github.com" set:
 ```
 git config --global url.https://github.com/.insteadOf git://github.com/
 ```
@@ -155,6 +154,5 @@ After=network.target mysql.service redis.service
 
 ### Development
 
-Install packages that are just required for building with `yarn add --dev` others with `yarn add`.
-Run `yarn run lint` to check for code errors and warnings. We have enough warnings already, just don't produce too many additional ones.
+Run `npm run lint:src` to check for code errors and warnings or `npm run lint -- ./your/file.js` to check a single file. We have enough warnings already, just don't produce too many additional ones.
 
diff --git a/package.json b/package.json
index 85fc41ee..1350cea0 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,9 @@
   "scripts": {
     "build": "babel-node tools/run build",
     "clean": "babel-node tools/run clean",
-    "lint": "eslint --ext .jsx --ext .js src",
+    "babel-node": "cd $INIT_CWD && babel-node",
+    "lint": "cd $INIT_CWD && eslint --ext .jsx --ext .js",
+    "lint:src": "eslint --ext .jsx --ext .js src",
     "lint:css": "stylelint \"src/**/*.{css,less,scss,sss}\"",
     "lint:staged": "lint-staged"
   },
@@ -136,7 +138,6 @@
     "webpack-bundle-analyzer": "^3.6.0",
     "webpack-dev-middleware": "^3.7.1",
     "webpack-hot-middleware": "^2.18.0",
-    "write-file-webpack-plugin": "^4.0.2",
-    "yarn": "^1.17.3"
+    "write-file-webpack-plugin": "^4.0.2"
   }
 }
diff --git a/tools/webpack.config.js b/tools/webpack.config.js
index bab03a7f..7697dddd 100644
--- a/tools/webpack.config.js
+++ b/tools/webpack.config.js
@@ -7,7 +7,7 @@ import AssetsPlugin from 'assets-webpack-plugin';
 import { BundleAnalyzerPlugin } from 'webpack-bundle-analyzer';
 import pkg from '../package.json';
 
-const isDebug = !process.argv.includes('--release');
+const isDebug = process.argv.includes('--debug');
 const isVerbose = process.argv.includes('--verbose');
 const isAnalyze = process.argv.includes('--analyze') || process.argv.includes('--analyse');