cache-bust

Use cache busting in express. Adds a version query string to ressources.

Usage with express

var express = require('express');
var cacheBust = require('cache-busted');

var app = express();
cacheBust.handler(app);

This exposes the function cacheBust in your app locals. Enabling you to do the following (example using jade):

head
  title Hello World
  != cacheBust('/public/js/app.js')
  != cacheBust('/public/css/style.css')
  != cacheBust('/public/css/style', 'css')

Output:

<head>
  <title>Hello World</title>
  <script type="text/js" src="/public/js/app.js?v=1.0.0" />
  <link rel="stylesheet" href="/public/css/style.css?v=1.0.0" />
  <link rel="stylesheet" href="/public/css/style.css?v=1.0.0" />
</head>

Options

Add the options to the handler call: cacheBust.handler(app, options)

version: Use this exact version. Default: null which will make this module look for a package.json in the folder below packageLocation: Path to the package.json. Defaults to ../../package.json.

Difference production and development

The above example is the output if the NODE_ENV environment variable is set to production or integration. Otherwise it also appends the current timestamp so that each request will load all new dependencies. Example:

<link rel="stylesheet" href="/public/css/style.css?v=1.0.0-1432576223502" />

d0b1010r/cache-busted

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