gulp-pkg-export

The tool is used to export packages in your project via Gulp.

Use this like:

const gulp = require('gulp');
const pkgExport = require('gulp-pkg-export');

gulp.task('pkg', function() {
	return gulp.src('src/**/*.js', {read: false})
		.pipe(pkgExport({
			// options for `pkg-export`
			base: 'src',
			npm: 'js/npm',
			compiler: function(content) {
				return require('babel-core').transform(content, {
					presets: ['es2015', 'stage-0'],
					plugins: ['transform-runtime']
				}).code;
			}
		}))
		.pipe(gulp.dest('dist'))
});

The options are passed to pkg-export. See here: https://github.com/HaoyCn/pkg-export