diff --git a/packages/core-js/README.md b/packages/core-js/README.md
index d0d77e85..d0e8e9f5 100644
--- a/packages/core-js/README.md
+++ b/packages/core-js/README.md
@@ -1,11 +1,38 @@
 # `core-js`
 
-> TODO: description
+Core-JS defines custom functions for the **Wisemapping** ecosystem.
+
+## Quick Start
+
+1. Clone repository with the next command:
+
+```
+git clone https://[username]@bitbucket.org/wisemapping/wisemapping-frontend.git
+```
+
+where the variable _username_ is you username of Bitbucket.
+
+_Note:The project is configured to use the yarn dependency manager_
+
+2. Move to folder core-js
+
+```
+cd packages/core-js
+```
+
+3. Now you need install all dependence, this is done with command `yarn install`
+
+4. To start the development enviroment you have to use command `yarn start`.
+
+## Production
+
+To build up the package core-js and use in production, you have to use command `yarn build`
 
 ## Usage
 
+To start using core-js it has to be required as a module and then intanciarce as a function
+
 ```
 const coreJs = require('core-js');
-
-// TODO: DEMONSTRATE API
+coreJs();
 ```
diff --git a/packages/core-js/webpack.common.js b/packages/core-js/webpack.common.js
index b5cf5653..198312b9 100644
--- a/packages/core-js/webpack.common.js
+++ b/packages/core-js/webpack.common.js
@@ -1,9 +1,9 @@
 const path = require('path'); // eslint-disable-line
-//const { ProvidePlugin } = require('webpack');
 const { CleanWebpackPlugin } = require('clean-webpack-plugin'); // eslint-disable-line
 
 /** @type {import('webpack').Configuration} */
-module.exports = { // eslint-disable-line 
+module.exports = {
+    // eslint-disable-line
     entry: './lib/core.js',
     output: {
         path: path.resolve(__dirname, 'dist'), // eslint-disable-line
@@ -28,32 +28,3 @@ module.exports = { // eslint-disable-line
     },
     plugins: [new CleanWebpackPlugin()],
 };
-
-/*
- *{
-        core: [
-            path.resolve(__dirname, '../mindplot/src/main/javascript/Options'),
-            path.resolve(
-                __dirname,
-                '../mindplot/src/main/javascript/libraries/bootstrap/BootstrapDialog'
-            ),
-            path.resolve(
-                __dirname,
-                '../mindplot/src/main/javascript/libraries/bootstrap/BootstrapDialog.Request'
-            ),
-        ],
-    },
-Options: path.resolve(path.join(__dirname, '../mindplot/src/main/javascript/Options')),
-            BootstrapDialog: path.resolve(
-                path.join(
-                    __dirname,
-                    '../mindplot/src/main/javascript/libraries/bootstrap/BootstrapDialog'
-                )
-            ),
-            BootstrapDialogRequest: path.resolve(
-                path.join(
-                    __dirname,
-                    '../mindplot/src/main/javascript/libraries/bootstrap/BootstrapDialog.Request'
-                )
-            ),
- * */
diff --git a/packages/core-js/webpack.dev.js b/packages/core-js/webpack.dev.js
index f63290fe..90b62cf1 100644
--- a/packages/core-js/webpack.dev.js
+++ b/packages/core-js/webpack.dev.js
@@ -1,14 +1,18 @@
-const { HotModuleReplacementPlugin } = require("webpack");
-const { merge } = require("webpack-merge");
-const common = require("./webpack.common");
+const { HotModuleReplacementPlugin } = require('webpack');
+const { merge } = require('webpack-merge');
+const common = require('./webpack.common');
 
 /** @type {import('webpack').Configuration} */
 const devConfig = {
-  mode: "development",
-  target: "core",
-  plugins: [new HotModuleReplacementPlugin()],
-  devtool: "eval-source-map" 
+    mode: 'development',
+    target: 'web',
+    plugins: [new HotModuleReplacementPlugin()],
+    devtool: 'eval-source-map',
+    devServer: {
+        port: 8080,
+        open: 'google-chrome-stable',
+        hot: true,
+    },
 };
 
-module.exports = merge(common, devConfig)
-
+module.exports = merge(common, devConfig);
diff --git a/packages/core-js/webpack.prod.js b/packages/core-js/webpack.prod.js
index d4b51f76..0462e9b7 100644
--- a/packages/core-js/webpack.prod.js
+++ b/packages/core-js/webpack.prod.js
@@ -1,16 +1,15 @@
-const { merge } = require("webpack-merge");
-const common = require("./webpack.common");
+const { merge } = require('webpack-merge');
+const common = require('./webpack.common');
 
 /** @type {import('webpack').Configuration} */
 const prodConfig = {
-  mode: "production",
-  devtool: "source-map",
-  optimization: {
-    splitChunks: {
-      chunks: "all",
+    mode: 'production',
+    devtool: 'source-map',
+    optimization: {
+        splitChunks: {
+            chunks: 'all',
+        },
     },
-  }
 };
 
 module.exports = merge(common, prodConfig);
-