gulp-rollup

This plugin allows gulp to populate a virtual filesystem and feed it to the Rollup ES6 module bundler.

Note: This plugin is not appropriate for most use cases, as it requires every file expected to be imported by Rollup to be loaded into memory preemptively. rollup-stream is preferred for almost all purposes. If you want to transform/synthesize/alias/etc. the files Rollup processes, use Rollup plugins; if there's no Rollup plugin to do what you want, try the gulp-to-Rollup plugin adapter, rollup-plugin-gulp. If you really need to synthesize your files in gulp, go ahead and use gulp-rollup—that's what it's made for.

Install

npm install --save-dev gulp-rollup

Usage

var gulp       = require('gulp'),
    rollup     = require('gulp-rollup');

gulp.task('bundle', function() {
  gulp.src('./src/**/*.js')
    // transform the files here.
    .pipe(rollup({
      // any option supported by Rollup can be set here.
      entry: './src/main.js'
    }))
    .pipe(gulp.dest('./dist'));
});

Usage with sourcemaps

var gulp       = require('gulp'),
    rollup     = require('gulp-rollup'),
    sourcemaps = require('gulp-sourcemaps');

gulp.task('bundle', function() {
  gulp.src('./src/**/*.js')
    .pipe(sourcemaps.init())
      // transform the files here.
      .pipe(rollup({
        entry: './src/main.js'
      }))
    .pipe(sourcemaps.write())
    .pipe(gulp.dest('./dist'));
});

Options

In addition to the standard Rollup options, gulp-rollup supports options.rollup, allowing you to use an older, newer, or custom version of Rollup by passing in the module like so:

gulp.src('./src/**/*.js')
  .pipe(rollup({
    rollup: require('rollup'),
    entry: './src/main.js'
  }))
  //...

If options.allowRealFiles is set to true, gulp-rollup will break the gulp plugin guidelines just for you and allow Rollup to read files directly from the filesystem when a file with a matching name isn't found in the gulp stream. You could use this to weasel your way out of having to use rollup-stream, but that would make you a terrible person.