Tips for optimizing HTML (Jade template) to utilize *.min JavaScript and CSS files for production purposes

Utilizing Grunt for the compilation of jade templates into HTML, as well as uglifying/concatenating JS and minimizing/concatenating CSS.

During the development process, I employ a combination of connect and watch to serve the front-end and automatically detect changes. At this stage, I make sure to use the 'source' versions of JS and CSS, rather than the minified/concatenated versions.

However, when it comes time to generate the production-ready HTML, JS, and CSS files, I find myself wondering about the best approach to updating the inclusions of the *.min JS and CSS files.

To clarify, my HTML currently includes:

a.css
b.css
c.css
a.js
b.js

While this setup works for development, in the production version I aim to have:

common-min.css common-min.js

Naturally, manually changing the Jade templates is not ideal, so I am exploring alternate solutions, potentially involving a Grunt plugin.

javascriptcsspuggruntjsminify

Answer №1

If you want to handle different environments in your template, you can pass data that specifies the environment and then include different resources based on that.

// Example in a route:
res.render("index", { env: "production" }); // Utilize NODE_ENV if needed

// Then in your jade template:
head
  if env == 'development'
    link(href="a.css", rel="stylesheet", type="text/css")
    link(href="b.css", rel="stylesheet", type="text/css")
  else
    link(href="min.css", rel="stylesheet", type="text/css")

For more information on using conditionals in Jade, check out the documentation here:

Answer №2

@Sasha

If you're searching for a jade build block processor (or commonly known as an HTML build block processor), you might be disappointed to learn that there is only a gulp plugin available for jade, not one for grunt.

Check out https://www.npmjs.com/package/gulp-processjade for a possible solution.

The code snippet below could potentially meet your requirements:

// build:js app.min.js
script(src='app.js')
// /build

@Eliana

Typically, a production build is executed once for each version. It's more efficient to utilize a build server, task manager, or dependency manager for this instead of dynamically generating the production version of the HTML page within the server's request handler. Avoid using env with res.render() as it introduces unnecessary logic for building a page in production mode when the entire server is optimized for production. This approach can make the request handler less modular since it becomes tied to the HTML page. Build logic should only be incorporated into dedicated build servers, and caching dynamically generated pages may introduce memory overhead that could be avoided.

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