gulp + browserify + livescript recipe adapted from https://github.com/gulpjs/gulp/blob/master/docs/recipes/fast-browserify-builds-with-watchify.md

gulpfile.ls

require! <[ watchify browserify gulp ]>
require! 'vinyl-source-stream': source
require! 'vinyl-buffer': buffer
require! 'gulp-util': gutil
require! 'liveify'

gulp.task \bundle !->
    bundler = watchify browserify {} <<< watchify.args <<<
        entries: ['./src/index.ls']
        debug: true
        transform: [liveify]

    bundler.on \update, bundle
    bundler.on \log, gutil.log

    do function bundle
        bundler.bundle!
            .on \error, -> gutil.log "Browserify #it"
            .pipe source \bundle.js
            .pipe buffer!
            .pipe gulp.dest './dist'