move connect middleware and browserify to separate modules

lib/6to5/browserify.js

@@ -1,31 +0,0 @@
-var transform = require("./transform");
-var through   = require("through");
-var _ = require("lodash");
-
-var browserify = module.exports = function (filename) {
-  return browserify.configure()(filename);
-};
-
-browserify.configure = function (opts) {
-  opts = opts || {};
-
-  return function (filename) {
-    var data = "";
-
-    var write = function (buf) {
-      data += buf;
-    };
-
-    var end = function () {
-      var opts2 = _.clone(opts);
-      opts2.filename = filename;
-
-      var out = transform(data, opts2);
-      stream.queue(out);
-      stream.queue(null);
-    };
-
-    var stream = through(write, end);
-    return stream;
-  };
-};

lib/6to5/middleware.js

@@ -1,67 +0,0 @@
-var util = require("./util");
-var path = require("path");
-var api  = require("./node");
-var fs   = require("fs");
-var _    = require("lodash");
-
-module.exports = function (opts) {
-  opts = _.defaults(opts || {}, {
-    options: {},
-    dest:    "cache",
-    src:     "assets"
-  });
-
-  var cache = {};
-
-  return function (req, res, next) {
-    var url = req.url;
-    if (!util.canCompile(url)) return next();
-
-    var dest = path.join(opts.dest, url);
-    var src  = path.join(opts.src, url);
-
-    var write = function (transformed) {
-      fs.writeFile(dest, transformed, function (err) {
-        if (err) {
-          next(err);
-        } else {
-          cache[url] = Date.now();
-          next();
-        }
-      });
-    };
-
-    var compile = function () {
-      var transformOpts = _.clone(opts.options);
-
-      api.transformFile(opts.dest, transformOpts, function (err, transformed) {
-        if (err) return next(err);
-        write(transformed);
-      });
-    };
-
-    var destExists = function () {
-      fs.stat(dest, function (err, stat) {
-        if (err) return next(err);
-
-        if (cache[url] < +stat.mtime) {
-          compile();
-        } else {
-          next();
-        }
-      });
-    };
-
-    fs.exists(src, function (exists) {
-      if (!exists) return next();
-
-      fs.exists(dest, function (exists) {
-        if (exists && cache[dest]) {
-          destExists();
-        } else {
-          compile();
-        }
-      });
-    });
-  };
-};

lib/6to5/node.js

@@ -2,8 +2,7 @@ var transform = require("./transform");
 var fs        = require("fs");
 var _         = require("lodash");
 
-exports.browserify = require("./browserify");
-exports.middleware = require("./middleware");
+exports.util = require("./util");
 
 exports.register = function () {
   require("./register");