Vulcanize

Reduce an HTML file and its dependent HTML Imports into one file

Named for the Vulcanization process that turns polymers into more durable materials.

Installation

vulcanize is available on npm. For maximium utility, vulcanize should be installed globally.

npm install -g vulcanize

This will install vulcanize to /usr/local/bin/vulcanize.

Options

• -h|--help: print this message
• -v|--version: print version number
• -p <arg>|--abspath <arg>: use as the "webserver root", make all adjusted urls absolute
• --exclude <path>: exclude a subpath from root. Use multiple times to exclude multiple paths. Tags to excluded paths are kept.
• --strip-excludes: Remove tags to external resources.
• --inline-scripts: Inline external scripts.

Usage

The command

vulcanize target.html

will inline the HTML Imports of target.html and print the resulting HTML to standard output.

The command

vulcanize target.html > build.html

will inline the HTML Imports of target.html and print the result to build.html.

The command

vulcanize -p "path/to/target/" /target.html

will inline the HTML Imports of target.html, treat path/to/target/ as the webroot of target.html, and make all urls absolute to the provided webroot.

The command

vulcanize --exclude "path/to/target/subpath/" --exclude "path/to/target/subpath2/" target.html

will inline the HTML Imports of target.html that are not in the directory path/to/target/subpath nor path/to/target/subpath2.

If the --strip-excludes flag is used, the HTML Import <link> tags that point to resources in path/totarget/subpath and path/to/target/subpath2/ will also be removed.

The command

vulcanize --inline-scripts target.html

will inline scripts in target.html as well as HTML Imports. Exclude flags will apply to both Imports and Scripts.

Using vulcanize programmatically

Vulcanize as a library has two exported function.

vulcanize.setOptions takes an object of options similar to the command line options.

• abspath: A folder to treat as "webroot".
  • When specified, use an absolute path to target.
• excludes: An array of RegExp objects to exclude paths from being inlined.
• stripExcludes: Remove paths that were excluded by the regexes in excludes.
• inlineScripts: Inline external scripts

vulcanize.process takes a target path to target.html and a callback.

Example:

var vulcan = require('vulcanize');
var hydrolysis = require('hydrolysis');

vulcan.setOptions({
  abspath: '',
  excludes: [
  ],
  stripExcludes: false,
  inlineScripts: false
});

vulcan.process(target, function(err, inlinedHtml) {
});