metalsmith-contenthash


> based off of `metalsmith-fingerprint-ignore, uses crypto.createHash instead of crypto.createHmac

Installation

`
npm install metalsmith-contenthash
`

Example (serving assets)

`js
var Metalsmith = require('metalsmith');
var assets = require('metalsmith-assets');
var contenthash = require('metalsmith-contenthash');

var ms = Metalsmith(process.cwd());


ms.use(assets({
source: './assets',
destination: './assets',
}));


// no options are required, these are the defaults
// i.e. same as: ms.use(contenthash()) or ms.use(contenthash({}))
ms.use(contenthash({

// don't keep orignal untagged file
keep: false,

// use sha256 for hashing
algorithm: 'sha256',

// match static files
// uses multimatch https://www.npmjs.com/package/multimatch
pattern: ['*/.{js,scss,css,map,png,jpg}'],

// function for determining new filename
// default function uses only first 16 hexadecimal digits
rename: function(filepath, digest) {

// we split at the first period, instead of extname
// this is to handle .css.map
var ext = filepath.indexOf('.');

return [
filepath.substring(0, ext),
'.', digest.substr(0, 16),
filepath.substring(ext),
].join('');

},

}));


ms.build(function(error) {
if (error) throw error;

console.log('Built');
});

`

The new filenames are accessible via the hashes metadata object.

`html



``