crisper

v2.1.1

Published

3 years ago

Make an HTML file with inline scripts CSP compliant

Downloads

17,310

0High
0Medium
0Low

azakus

garlicnation

nevir

Crisper

Split inline scripts from an HTML file for CSP compliance

Usage

Command line usage:

cat index.html | crisper -h build.html -j build.js
crisper --source index.html --html build.html --js build.js
crisper --html build.html --js build.js index.html

The output html file will load the output js file at the top of <head> with a <script defer> element.

Optional Flags:

--script-in-head=false
- In the output HTML file, place the script at the end of <body>
- Note: Only use this if you need document.write support.
--only-split
- Do not write a <script> tag in the output HTML file.
--always-write-script
- Always create a .js file, even without any <script> elements.
--csp-hashable-script-loader
- Create a hashable script loader that supports hash-based CSP with strict-dynamic.
- A strict CSP could look like this:
```
script-src 'strict-dynamic' 'sha256-mUZwR5zj1qMvnzisSvfmC8JczLB0BUKW0Ohr3euDoIA=';
object-src 'none';
base-uri 'self';
```
-v | --version
- Prints version number.

Library usage:

var output = crisper({
  source: 'source HTML string',
  jsFileName: 'output js file name.js',
  scriptInHead: true, //default true
  onlySplit: false, // default false
  alwaysWriteScript: false // default false
});
fs.writeFile(htmlOutputFileName, output.html, 'utf-8', ...);
fs.writeFile(jsOutputFileName, output.js, 'utf-8', ...);

Usage with Vulcanize

When using vulcanize, crisper can handle the html string output directly and write the CSP separated files on the command line

vulcanize index.html --inline-script | crisper --html build.html --js build.js

Or programmatically

vulcanize.process('index.html', function(err, cb) {
  if (err) {
    return cb(err);
  } else {
    var out = crisper({
      source: html,
      jsFileName: 'name of js file.js',
      scriptInHead: true, // default true
      onlySplit: false, // default false
      alwaysWriteScript: false //default false
    })
    cb(null, out.html, out.js);
  }
});

Breaking Changes from 1.x

Deprecated split API was removed
- require('crisper').split()
Default value of script-in-head flag changed to true
- This improves load performance by parallelizing HTML and script parsing
- This will break document.write calls
- If you experience problems, you can use --script-in-head=false argument or scriptInHead: false in library usage.

Published

Vulnerabilities

Links

Maintainers

Keywords

Readme

Crisper

Usage

Usage with Vulcanize

Breaking Changes from 1.x

Build Tools