# Customize Webpack

# Put Webpack

Webpack is used to optimize your game (move resources to the corresponding folders, generate JSON from TMX (Tiled Map Editor), Read .view files, etc.).

All the configuration is in the @rpgjs/compiler package.

npm i rimraf @rpgjs/compiler -D

Note that @rpgjs/compiler does not work on version >5 of Webpack

Then, in the webpack.config.js file, write the following lines:

const webpack = require('@rpgjs/compiler')

module.exports = webpack(__dirname)

In the .json package, put the scripts:

{
    "scripts": {
        "build": "rimraf dist && webpack",
        "dev": "rimraf dist && webpack -w"
    }
}

# Setting environment variables on the client side

Since version 3.0.0-beta.5

const webpack = require('@rpgjs/compiler')

module.exports = webpack(__dirname, {
    envsClient: ['API_URL']
})

Add the envsClient property with a value that is the same as the webpack.EnvironmentPlugin() parameter

If you use the dotenv package, remember to put the require('dotenv').config() line at the beginning of your code

# Changing the Webpack configuration

For example, if you want to change the file as an entry point, you can do so:

const webpack = require('@rpgjs/compiler')
module.exports = webpack(__dirname, {
    extendClient: {
        entry : `./src/${ process.env.RPG_TYPE == 'mmorpg' ? 'client/otherfile.ts' : 'standalone/otherfile.ts' }`
    },
    extendServer: {}
})

Follow the Webpack API to configure the file