anchor.diff:  
   [source,bash]
   ```
  -mkdir hello-webpack
  -cd hello-webpack
  -yarn init -y
  +mkdir hello-bundler
  +cd hello-bundler
  +```
  +
  +Create an empty `package.json` file:
  +
  +[source,bash]
  +```
  +echo "{}" > package.json
   ```
   
   Add webpack and its command line tools:
  -
   [source,bash]
   ```
  -yarn add webpack webpack-cli
  +npm --save-dev webpack webpack-cli
   ```
   
   Create a `webpack.config.js` file:
  
positive.code: 
  toc::[]
  
  This page documents how to use http://webpack.js.org[Webpack] and externs
  inference to easily integrate popular libraries from the JavaScript ecosystem
  into your ClojureScript project. You should have http://nodejs.org[Node.js] and
  http://yarnpkg.com[yarn] installed. This guide assumes you have read through the
  Quick Start. This guide borrows liberally from this
  https://scotch.io/tutorials/setup-a-react-environment-using-webpack-and-babel[excellent
  guide on Webpack 2].
  
  [[setting-up]]
  == Setting Up Your Project
  
negative.code: 
  [source,clojure]
  ```
  {:deps {org.clojure/clojurescript {:mvn/version "1.10.312"}
          reagent {:mvn/version "0.10.0" :exclusions [cljsjs/react]}}}
  ```
  
  Change your source file to following:
  
  [source,clojure]
  ```
  (ns hello-bundler.core
    (:require [goog.dom :as gdom]
              [reagent.core :as r]))
  
  