nodery / get-sri

Generates the SRI hash of the given string to use with CDN resources without publishing the content to CDN.

get-sri

Generates the SRI (Subresource Integrity) hash of the given string to use as the SRIs of CDN files without publishing the content to CDN (e.g. when generating the readme file before release and publish).

With get-sri, you can just simply generate the sha256-j7UhB[...]5ni2s= part of the integrity attribute for <link> and <script> elements, e.g.:

<script src="https://example.com/example-framework.js" 
        integrity="sha256-j7UhB8zxegHMV59uYb38Ho75sqloISge2+fsjN5ni2s=" 
        crossorigin="anonymous"></script>

Installation

# Using NPM
npm install get-sri --save-dev

# Using Yarn
yarn add get-sri --dev

Usage

The API documentation can be found here.

const getSRI = require('get-sri')

// returns the SRI hash without prefix ('sha256' by default)
getSRI('... file content as string ...') // 'OXPgIukyI[...]6SgMU3pmfURI='

// returns the SRI hash with prefix ('sha256' by default, can be 'sha256', 'sha384', or 'sha512')
getSRI('... file content as string ...', getSRI.SHA256, true) // 'sha256-OXPgIukyI[...]6SgMU3pmfURI='

Contribution

Any contribution is appreciated. To get going, check out the contribution guidelines. Thank you and have fun!

License

MIT @ Richard Szakacs