Rollup / Gulp configuration

scripts.js

/* PLUGINS */
import rollupStream from 'rollup-stream'
import buffer from 'vinyl-buffer'
import resolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'
import includePaths from 'rollup-plugin-includepaths'
import buble from 'rollup-plugin-buble'
import { uglify } from 'rollup-plugin-uglify'
import uglifyEs from 'rollup-plugin-uglify-es'
import fileSize from 'rollup-plugin-filesize'
import rollupEach from 'gulp-rollup-each'

export default (gulp, plugins, file, mode, sync) => {

  return () => {
    gulp.src(`${file.path}/${file.input}.js`)
      .pipe(mode.development(plugins.sourcemaps.init()))
      .pipe(rollupEach({
        cache: true,
        external: mode.development() ? file.external : [],
        plugins: [
          includePaths({
            extensions: ['.js'],
            paths: output.includePaths
          }),
          resolve({
            jsnext: true,
            browser: true
          }),
          commonjs({
            include: 'node_modules/**'
          }),
          buble(),
          mode.production(file.input === 'photoswipe' ? uglify() : uglifyEs()),
          fileSize()
        ]
      }, {
        globals: output.globals,
        format: file.format,
        name: file.name,
        banner: '// @brixtoltextiles'
      }, require('rollup')))
      .pipe(mode.development(plugins.sourcemaps.write('.')))
      .pipe(gulp.dest(config.theme.assets))
      .pipe(mode.development(sync.stream()))
  }
}