Gulp / Browserify

gulpfile.js

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var makeScriptBundler = function(options) {
  var cache = {};
  // load the cache from disk
  if (fs.existsSync(options.cache)) { cache = require(options.cache); }
  var mainScriptPackageCache = {};
  var bundler = browserify({
    entries: options.entries,
    extensions: ['.coffee'],
    cache: cache,
    // packageCache: options.packageCache,
    fullPaths: true
  });
  if (options.require) { bundler.require(options.require); }
  if (options.external) { bundler.external(options.external); }
  bundler.on("dep", function(dep) {
    if (typeof dep.id === "string") {
      cache[dep.id] = dep;
      cache[dep.id].hash = crypto.createHash('md5').update(dep.source).digest('hex');
    }
  });
  bundler.on("bundle", function(b) {
    b.on("end", function() {
      fs.writeFile(options.cache, JSON.stringify(cache));
      console.log("wrote cache", options.cache);
    });
  });
  return function() {
    var stream = bundler.bundle();
    return stream
      .pipe(source(options.source+".js"))
      .pipe(streamify(uglify()))
      .pipe(gulp.dest(options.destination));
  };
};

gulp.task('main_script', function() {
  var requires = glob.sync("./src/js/!(main).coffee").map(function(f){
    return {file: f, expose: path.basename(f, '.coffee')};
  });
  var bundle = makeScriptBundler({
    entries: ['./src/js/main.coffee'],
    source: 'main',
    destination: './build/js',
    require: requires,
    cache: "./cache/main.js.cache.json",
    // packageCache: mainScriptPackageCache
    fullPaths: true
  });
  return bundle();
});

gulp.task('separate_page_scripts', ['main_script'], function() {
  return glob.sync("./src/js/separate-pages/*.coffee").forEach(function(file) {
    var bundle = makeScriptBundler({
      entries: [file],
      source: 'separate-pages/' + path.basename(file, ".coffee"),
      destination: './build/js',
      external: glob.sync("./src/js/*.coffee"),
      cache: "./cache/" + path.basename(file, ".coffee") + ".js.cache.json"
      // packageCache: separatePageScriptsPackageCache
    });
    return bundle();
  });
});


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