Static asset revisioning by appending content hash to filenames: unicorn.css => unicorn.css?d41d8cd98f
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gulp-revm

Static asset revisioning by appending content hash to filenames
unicorn.cssunicorn.css?d41d8cd98f

Make sure to set the files to never expire for this to have an effect.

ABout

gulp-revm is a modified version of gulp-rev based on the main processing for appending the hash to filename with gulp-revm-collector, in the plugin you can use all API as in gulp-rev.gulp-revm through the gulp-revm-collector can easily solve the page loading process cache with file-generated md5.

Install

$ npm install --save-dev gulp-revm

Usage

var gulp = require('gulp');
var rev = require('gulp-revm');

gulp.task('default', function () {
	return gulp.src('src/*.css')
		.pipe(rev())
		.pipe(gulp.dest('dist'));
});

API

rev()

rev.manifest([path], [options])

path

Type: string
Default: "rev-manifest.json"

Manifest file path.

options

base

Type: string
Default: process.cwd()

Override the base of the manifest file.

cwd

Type: string
Default: process.cwd()

Override the cwd (current working directory) of the manifest file.

merge

Type: boolean
Default: false

Merge existing manifest file.

Original path

Original file paths are stored at file.revOrigPath. This could come in handy for things like rewriting references to the assets.

Asset hash

The hash of each rev'd file is stored at file.revHash. You can use this for customizing the file renaming, or for building different manifest formats.

Asset manifest

var gulp = require('gulp');
var rev = require('gulp-revm');

gulp.task('default', function () {
	// by default, gulp would pick `assets/css` as the base,
	// so we need to set it explicitly:
	return gulp.src(['assets/css/*.css', 'assets/js/*.js'], {base: 'assets'})
		.pipe(gulp.dest('build/assets'))  // copy original assets to build dir
		.pipe(rev())
		.pipe(gulp.dest('build/assets'))  // write rev'd assets to build dir
		.pipe(rev.manifest())
		.pipe(gulp.dest('build/assets')); // write manifest to build dir
});

An asset manifest, mapping the original paths to the revisioned paths, will be written to build/assets/rev-manifest.json:

{
	"css/unicorn.css": "css/unicorn.css?d41d8cd98f",
	"js/unicorn.js": "js/unicorn.js?273c2cin3f"
}

By default, rev-manifest.json will be replaced as a whole. To merge with an existing manifest, pass merge: true and the output destination (as base) to rev.manifest():

var gulp = require('gulp');
var rev = require('gulp-revm');

gulp.task('default', function () {
	// by default, gulp would pick `assets/css` as the base,
	// so we need to set it explicitly:
	return gulp.src(['assets/css/*.css', 'assets/js/*.js'], {base: 'assets'})
		.pipe(gulp.dest('build/assets'))
		.pipe(rev())
		.pipe(gulp.dest('build/assets'))
		.pipe(rev.manifest({
			base: 'build/assets',
			merge: true // merge with the existing manifest (if one exists)
		}))
		.pipe(gulp.dest('build/assets'));
});

You can optionally call rev.manifest('manifest.json') to give it a different path or filename.

Sourcemaps and gulp-concat

Because of the way gulp-concat handles file paths, you may need to set cwd and path manually on your gulp-concat instance to get everything to work correctly:

var gulp = require('gulp');
var rev = require('gulp-revm');
var sourcemaps = require('gulp-sourcemaps');
var concat = require('gulp-concat');

gulp.task('default', function () {
	return gulp.src('src/*.js')
		.pipe(sourcemaps.init())
		.pipe(concat({path: 'bundle.js', cwd: ''}))
		.pipe(rev())
		.pipe(sourcemaps.write('.'))
		.pipe(gulp.dest('dist'));

Streaming

This plugin does not support streaming. If you have files from a streaming source, such as browserify, you should use gulp-buffer before gulp-revm in your pipeline:

var gulp = require('gulp');
var browserify = require('browserify');
var source = require('vinyl-source-stream');
var buffer = require('gulp-buffer');
var rev = require('gulp-revm');

gulp.task('default', function () {
	return browserify('src/index.js')
		.bundle({debug: true})
		.pipe(source('index.min.js'))
		.pipe(buffer())
		.pipe(rev())
		.pipe(gulp.dest('dist'))
});

Works with gulp-revm