gulpfile.js
'use strict';
var gulp = require('gulp');
var source = require('vinyl-source-stream');
var browserify = require('browserify');
gulp.task('scripts', function() {
browserify('./browser.js')
.bundle()
.pipe(source('out.js'))
.pipe(gulp.dest('.'));
});
gulp.task('watch', function() {
gulp.watch(['**/*.js', '!out.js', '!node_modules/**/*'], ['scripts']);
});
gulp.task('default', ['scripts']);