How to Not Minify Source with webpack

By  on  

The webpack JavaScript utility has taken over the modern JavaScript landscape, so much so that it's hard to be a JavaScript developer and not use it. JavaScript build utilities are the point where they do best practices implicitly, like minify code, caching, and more.

I was recently debugging a bundled webpack app and it quickly became clear that the only way forward was debugging the actual source, not the minified code. Duh.y

To prevent webpack from minifying the source, add the following to your webpack config:

{
    // .... other webpack, like output, etc.
    optimization: {
        minimize: false
    },
}

This simple flag makes debugging easier, if only enabled for a moment. I love how webpack allows you to take advantage of its feature set while being able to disable really quickly!

Recent Features

  • By
    Chris Coyier’s Favorite CodePen Demos

    David asked me if I'd be up for a guest post picking out some of my favorite Pens from CodePen. A daunting task! There are so many! I managed to pick a few though that have blown me away over the past few months. If you...

  • By
    Responsive Images: The Ultimate Guide

    Chances are that any Web designers using our Ghostlab browser testing app, which allows seamless testing across all devices simultaneously, will have worked with responsive design in some shape or form. And as today's websites and devices become ever more varied, a plethora of responsive images...

Incredible Demos

  • By
    CSS Animations Between Media Queries

    CSS animations are right up there with sliced bread. CSS animations are efficient because they can be hardware accelerated, they require no JavaScript overhead, and they are composed of very little CSS code. Quite often we add CSS transforms to elements via CSS during...

  • By
    Background Animations Using MooTools

    One of the sweet effects made easy by JavaScript frameworks like MooTools and jQuery is animation. I ran across this great jQuery tutorial that walks you through animating a background image of a page. Here's a quick MooTools code snippet that...

Discussion

  1. You may also want to use devtool: 'source-map' to enable high-resolution source maps for your bundles. It will make debugging with browser devtools infinitely easier. (They recognize the source maps and will even allow breakpoint debugging while viewing the original source files!)

  2. Leon

    I’ve inherited a project and am trying to figure out how to edit the config file to stop WebPack from bundling CSS completely.

    I think the way is to create two separate files, one for dev and one for production building. Then attach them to package.json > scripts and launch individually for their intended purpose.

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!