# Running Elixir

Elixir is built on top of Webpack, so to run your Elixir tasks you only need to run the `webpack` command in your terminal. Before running Webpack, you will need a `webpack.config.js` file in the root of your project. Below is a simple example:

```javascript
const elixir = require("coldbox-elixir");

module.exports = elixir(mix => {
    mix.js("app.js");
});
```

Please note that by adding the `-p` flag to the command will turn on Webpack's production mode. This will minify your CSS and JavaScript files as well as add long-term caching hashes to your compiled files.

## Watching Assets For Changes

For performance and convienence, you can run Webpack in watch mode by passing the `-w` or `--watch` flag. Any changes to your source files will automatically re-run your build. Note that your build will be significantly faster on subsequent changes than when running Webpack from scratch.

## NPM Scripts

The easiest way to run Webpack is to set up some NPM scripts. Here are the following we recommend:

```javascript
"scripts": {
    "dev": "webpack --hide-modules",
    "watch": "npm run dev -- --watch",
    "prod": "npm run dev -- -p"
}
```

Then from the terminal you can run `npm run [scriptName for this example either dev, watch or prod]` to run the associated script.


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