README
PostCSS Hash
PostCSS plugin to replace output file names with HASH algorithms (md5
, sha256
, sha512
, etc) and string length of your choice - for cache busting.
# input
postcss input.css -o output.css
# output
output.a1b2c3d4e5.css
# ./manifest.json
{
"output.css": "output.a1b2c3d4e5.css",
}
# input
postcss css/in/*.css --dir css/out/
# output
file1.a516675ef8.css
file2.aa36634cc4.css
file3.653f682ad9.css
file4.248a1e8f9e.css
file5.07534806bd.css
# ./manifest.json
{
"file1.css": "file1.a516675ef8.css",
"file2.css": "file2.aa36634cc4.css",
"file3.css": "file3.653f682ad9.css",
"file4.css": "file4.248a1e8f9e.css",
"file5.css": "file5.07534806bd.css"
}
Usage
// postcss.config.js
module.exports = (ctx) => ({
plugins: {
'postcss-hash': {
algorithm: 'sha256',
trim: 20,
manifest: './manifest.json'
},
}
});
Options
(string, default: 'md5')
algorithm Uses node's inbuilt crypto module. Pass any digest algorithm
that is supported in your environment. Possible values are: md5
, md4
, md2
, sha
, sha1
, sha224
, sha256
, sha384
, sha512
.
(boolean, default: false)
includeMap Setting includeMap
to true
will allow postcss-hash to hash the name of the sourcemap, as well hash the CSS including the sourceMappingURL
comment. You can set this option to true if you care about the hashed fingerprints matching the contents of the CSS file, and don't mind a performance hit of regenerating the CSS twice.
(number, default: 10)
trim Hash's length.
(string, default: './manifest.json')
manifest Will output a manifest
file with key: value
pairs.
name `(function, default: ({dir, name, hash, ext}) => path.join(dir, name + '.' + hash + ext)
Pass a function to customise the name of the output file. The function is given an object of string values:
- dir: the directory name as a string
- name: the name of the file, excluding any extensions
- hash: the resulting hash digest of the file
- ext: the extension of the file
NOTE:
- The values will be either appended or replaced. If this file needs be recreated on each run, you'll have to manually delete it.
key
s are generated with files'basename
. If you have./input/A/one.css
&./input/B/one.css
, only the last entry will exist.
See PostCSS docs for examples for your environment.
Version: 0.2.0
Updated on: August 29, 2017