diff --git a/build.js b/build.js
index bbd2bff..7bc1418 100755
--- a/build.js
+++ b/build.js
@@ -25,6 +25,11 @@ var flavourConfig = {
         min: false,
         flavourFile: './src/flavours/server.js',
         outputSuffix: 'server'
+    },
+    'shears' : {
+        min: false,
+        flavourFile: './src/flavours/optimizer.js',
+        outputSuffix: 'optimizer'
     }
 };
 
diff --git a/build/shepherd.dev.js b/build/shepherd.dev.js
index d361023..250c70c 100644
--- a/build/shepherd.dev.js
+++ b/build/shepherd.dev.js
@@ -1253,8 +1253,8 @@
                 initConfig(confs);
                 initModules(modules);
             }
-            this.addEventListener && this.addEventListener("load", onReady);
-            !this.addEventListener && (this.onload = onReady);
+            window.addEventListener && window.addEventListener("load", onReady);
+            !window.addEventListener && (window.onload = onReady);
         }
     };
     (function(me, parser, when, flavourConfig, undefined) {
@@ -1265,13 +1265,24 @@
             return Object.prototype.toString.call(obj).toLowerCase() == "[object " + type.toLowerCase() + "]";
         }
         function flavour(name, args) {
-            if (name in flavourConfig) {
-                return flavourConfig[name].apply({
+            if (name in flavour) {
+                return flavour[name].apply({
                     is: is
                 }, args);
             }
             return null;
         }
+        flavour.register = function(name, fn) {
+            if (!(name in this)) {
+                flavour[name] = fn;
+            }
+        };
+        for (var i in flavourConfig) {
+            if (!flavourConfig.hasOwnProperty(i)) {
+                continue;
+            }
+            flavour.register(i, flavourConfig[i]);
+        }
         var modules = {}, _errModules = null, _isServer = typeof window == "undefined", _runInTag;
         var _plugins = {
             modularize: function modularizePlugin(vars) {
@@ -1332,11 +1343,12 @@
                 modules[name] = module;
             }
         }
+        flavour.register("registerModule", _registerModule);
         function loadModule(moduleConf, contents) {
             !moduleConf && (moduleConf = {});
             moduleConf.imports = moduleConf.imports || {};
             var module = flavour("loadModule", [ moduleConf, contents, _runInTag ]);
-            var _err = _registerModule(module, moduleConf._internals.src, moduleConf.name);
+            var _err = flavour("registerModule", [ module, moduleConf._internals.src, moduleConf.name ]);
             return _err || module;
         }
         function applyConfiguration(conf) {
@@ -1601,6 +1613,7 @@
                 modules = {};
                 _errModules = null;
             };
+            me.s6d.flavour = flavour;
         }
     })(this, harmonyParser, when, flavour);
 })();
\ No newline at end of file
diff --git a/build/shepherd.min.js b/build/shepherd.min.js
index 6a8d7af..2a34210 100644
--- a/build/shepherd.min.js
+++ b/build/shepherd.min.js
@@ -1 +1 @@
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diff --git a/build/shepherd.optimizer.js b/build/shepherd.optimizer.js
new file mode 100644
index 0000000..2f26aff
--- /dev/null
+++ b/build/shepherd.optimizer.js
@@ -0,0 +1,1632 @@
+(function() {
+    var harmonyParser = function() {
+        var exports;
+        var harmony_parser = function() {
+            var parser = {
+                trace: function trace() {},
+                yy: {},
+                symbols_: {
+                    error: 2,
+                    Program: 3,
+                    ProgramNext: 4,
+                    ProgramElement: 5,
+                    ModuleDeclaration: 6,
+                    ImportDeclaration: 7,
+                    ExportDeclaration: 8,
+                    EOF: 9,
+                    ModuleSpecifier: 10,
+                    Path: 11,
+                    String: 12,
+                    module: 13,
+                    Id: 14,
+                    at: 15,
+                    SEMICOLON: 16,
+                    IS: 17,
+                    ImportSource: 18,
+                    OPEN_BRACE: 19,
+                    ModuleBody: 20,
+                    CLOSE_BRACE: 21,
+                    from: 22,
+                    "import": 23,
+                    ImportSpecifierSet: 24,
+                    WILDCARD: 25,
+                    ImportSpecifier: 26,
+                    ImportSpecifierNext: 27,
+                    COMMA: 28,
+                    COLON: 29,
+                    "export": 30,
+                    ExportSpecifierSet: 31,
+                    ExportSpecifierSetNext: 32,
+                    ExportSpecifier: 33,
+                    ExportSpecifierNext: 34,
+                    ModuleElement: 35,
+                    PERIOD: 36,
+                    $accept: 0,
+                    $end: 1
+                },
+                terminals_: {
+                    2: "error",
+                    9: "EOF",
+                    12: "String",
+                    13: "module",
+                    14: "Id",
+                    15: "at",
+                    16: "SEMICOLON",
+                    17: "IS",
+                    19: "OPEN_BRACE",
+                    21: "CLOSE_BRACE",
+                    22: "from",
+                    23: "import",
+                    25: "WILDCARD",
+                    28: "COMMA",
+                    29: "COLON",
+                    30: "export",
+                    36: "PERIOD"
+                },
+                productions_: [ 0, [ 3, 1 ], [ 4, 1 ], [ 4, 2 ], [ 5, 1 ], [ 5, 1 ], [ 5, 1 ], [ 5, 1 ], [ 10, 1 ], [ 10, 1 ], [ 6, 5 ], [ 6, 5 ], [ 6, 5 ], [ 18, 1 ], [ 18, 3 ], [ 7, 5 ], [ 24, 1 ], [ 24, 1 ], [ 24, 4 ], [ 27, 3 ], [ 27, 0 ], [ 26, 1 ], [ 26, 3 ], [ 8, 4 ], [ 32, 3 ], [ 32, 0 ], [ 31, 4 ], [ 31, 1 ], [ 31, 1 ], [ 31, 3 ], [ 33, 1 ], [ 33, 3 ], [ 34, 3 ], [ 34, 0 ], [ 20, 2 ], [ 20, 2 ], [ 20, 2 ], [ 20, 0 ], [ 35, 1 ], [ 35, 1 ], [ 11, 1 ], [ 11, 3 ] ],
+                performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate, $$, _$) {
+                    var $0 = $$.length - 1;
+                    switch (yystate) {
+                      case 1:
+                        return $$[$0];
+                        break;
+                      case 2:
+                        this.$ = $$[$0];
+                        break;
+                      case 3:
+                        this.$ = $$[$0].length ? $$[$0 - 1].concat($$[$0]) : $$[$0 - 1];
+                        break;
+                      case 4:
+                        this.$ = [ {
+                            type: "module",
+                            decl: $$[$0]
+                        } ];
+                        break;
+                      case 5:
+                        this.$ = [ {
+                            type: "import",
+                            decl: $$[$0]
+                        } ];
+                        break;
+                      case 6:
+                        this.$ = [ {
+                            type: "export",
+                            decl: $$[$0]
+                        } ];
+                        break;
+                      case 7:
+                        this.$ = [];
+                        break;
+                      case 8:
+                        this.$ = {
+                            type: "module",
+                            path: $$[$0]
+                        };
+                        break;
+                      case 9:
+                        this.$ = {
+                            type: "uri",
+                            path: $$[$0].trim().replace(/^(['"])(.*)\1$/, function(str, m1, m2, m3) {
+                                return m2;
+                            })
+                        };
+                        break;
+                      case 10:
+                        this.$ = {
+                            id: $$[$0 - 3],
+                            path: $$[$0 - 1].trim().replace(/^(['"])(.*)\1$/, function(str, m1, m2, m3) {
+                                return m2;
+                            })
+                        };
+                        break;
+                      case 11:
+                        this.$ = {
+                            id: $$[$0 - 3],
+                            src: $$[$0 - 1]
+                        };
+                        break;
+                      case 12:
+                        this.$ = {
+                            id: $$[$0 - 3],
+                            expressions: $$[$0 - 1]
+                        };
+                        break;
+                      case 13:
+                        this.$ = $$[$0];
+                        break;
+                      case 14:
+                        var out = {
+                            id: $$[$0 - 2]
+                        };
+                        out[$$[$0].type] = $$[$0].path;
+                        this.$ = out;
+                        break;
+                      case 15:
+                        this.$ = {
+                            from: $$[$0 - 1],
+                            vars: $$[$0 - 3]
+                        };
+                        break;
+                      case 16:
+                        this.$ = [ $$[$0] ];
+                        break;
+                      case 17:
+                        this.$ = [ $$[$0] ];
+                        break;
+                      case 18:
+                        this.$ = [ $$[$0 - 2] ].concat($$[$0 - 1]);
+                        break;
+                      case 19:
+                        this.$ = typeof $$[$0] != "undefined" ? [ $$[$0 - 1] ].concat($$[$0]) : $$[$0 - 1];
+                        break;
+                      case 21:
+                        this.$ = $$[$0];
+                        break;
+                      case 22:
+                        this.$ = {
+                            remote: $$[$0 - 2],
+                            local: $$[$0]
+                        };
+                        break;
+                      case 23:
+                        this.$ = typeof $$[$0 - 1] != "undefined" ? $$[$0 - 2].concat($$[$0 - 1]) : $$[$0 - 2];
+                        break;
+                      case 24:
+                        this.$ = typeof $$[$0] != "undefined" ? $$[$0 - 1].concat($$[$0]) : $$[$0 - 1];
+                        break;
+                      case 26:
+                        this.$ = typeof $$[$0 - 1] != "undefined" ? [ $$[$0 - 2] ].concat($$[$0 - 1]) : [ $$[$0 - 2] ];
+                        break;
+                      case 27:
+                        this.$ = [ $$[$0] ];
+                        break;
+                      case 28:
+                        this.$ = [ $$[$0] ];
+                        break;
+                      case 29:
+                        this.$ = [ {
+                            from: $$[$0]
+                        } ];
+                        break;
+                      case 30:
+                        this.$ = $$[$0];
+                        break;
+                      case 31:
+                        this.$ = {
+                            local: $$[$0 - 2],
+                            remote: $$[$0]
+                        };
+                        break;
+                      case 32:
+                        this.$ = typeof $$[$0] != "undefined" ? [ $$[$0 - 1] ].concat($$[$0]) : [ $$[$0 - 1] ];
+                        break;
+                      case 34:
+                        this.$ = [ {
+                            type: "module",
+                            decl: $$[$0 - 1]
+                        } ].concat($$[$0]);
+                        break;
+                      case 35:
+                        this.$ = [ {
+                            type: "import",
+                            decl: $$[$0 - 1]
+                        } ].concat($$[$0]);
+                        break;
+                      case 36:
+                        this.$ = [ {
+                            type: "export",
+                            decl: $$[$0 - 1]
+                        } ].concat($$[$0]);
+                        break;
+                      case 37:
+                        this.$ = [];
+                        break;
+                      case 38:
+                        this.$ = $$[$0];
+                        break;
+                      case 39:
+                        this.$ = $$[$0];
+                        break;
+                      case 40:
+                        this.$ = $$[$0];
+                        break;
+                      case 41:
+                        this.$ = $$[$0 - 2] + "." + $$[$0];
+                        break;
+                    }
+                },
+                table: [ {
+                    3: 1,
+                    4: 2,
+                    5: 3,
+                    6: 4,
+                    7: 5,
+                    8: 6,
+                    9: [ 1, 7 ],
+                    13: [ 1, 8 ],
+                    23: [ 1, 9 ],
+                    30: [ 1, 10 ]
+                }, {
+                    1: [ 3 ]
+                }, {
+                    1: [ 2, 1 ]
+                }, {
+                    1: [ 2, 2 ],
+                    4: 11,
+                    5: 3,
+                    6: 4,
+                    7: 5,
+                    8: 6,
+                    9: [ 1, 7 ],
+                    13: [ 1, 8 ],
+                    23: [ 1, 9 ],
+                    30: [ 1, 10 ]
+                }, {
+                    1: [ 2, 4 ],
+                    9: [ 2, 4 ],
+                    13: [ 2, 4 ],
+                    23: [ 2, 4 ],
+                    30: [ 2, 4 ]
+                }, {
+                    1: [ 2, 5 ],
+                    9: [ 2, 5 ],
+                    13: [ 2, 5 ],
+                    23: [ 2, 5 ],
+                    30: [ 2, 5 ]
+                }, {
+                    1: [ 2, 6 ],
+                    9: [ 2, 6 ],
+                    13: [ 2, 6 ],
+                    23: [ 2, 6 ],
+                    30: [ 2, 6 ]
+                }, {
+                    1: [ 2, 7 ],
+                    9: [ 2, 7 ],
+                    13: [ 2, 7 ],
+                    23: [ 2, 7 ],
+                    30: [ 2, 7 ]
+                }, {
+                    14: [ 1, 12 ]
+                }, {
+                    14: [ 1, 14 ],
+                    19: [ 1, 16 ],
+                    24: 13,
+                    25: [ 1, 15 ]
+                }, {
+                    14: [ 1, 19 ],
+                    19: [ 1, 18 ],
+                    25: [ 1, 20 ],
+                    31: 17
+                }, {
+                    1: [ 2, 3 ]
+                }, {
+                    15: [ 1, 21 ],
+                    17: [ 1, 22 ],
+                    19: [ 1, 23 ]
+                }, {
+                    22: [ 1, 24 ]
+                }, {
+                    22: [ 2, 16 ]
+                }, {
+                    22: [ 2, 17 ]
+                }, {
+                    14: [ 1, 26 ],
+                    26: 25
+                }, {
+                    16: [ 2, 25 ],
+                    28: [ 1, 28 ],
+                    32: 27
+                }, {
+                    14: [ 1, 30 ],
+                    33: 29
+                }, {
+                    16: [ 2, 27 ],
+                    28: [ 2, 27 ]
+                }, {
+                    16: [ 2, 28 ],
+                    22: [ 1, 31 ],
+                    28: [ 2, 28 ]
+                }, {
+                    12: [ 1, 32 ]
+                }, {
+                    14: [ 1, 34 ],
+                    18: 33
+                }, {
+                    6: 36,
+                    7: 37,
+                    8: 38,
+                    13: [ 1, 8 ],
+                    20: 35,
+                    21: [ 2, 37 ],
+                    23: [ 1, 9 ],
+                    30: [ 1, 10 ]
+                }, {
+                    10: 39,
+                    11: 40,
+                    12: [ 1, 41 ],
+                    14: [ 1, 42 ]
+                }, {
+                    21: [ 2, 20 ],
+                    27: 43,
+                    28: [ 1, 44 ]
+                }, {
+                    21: [ 2, 21 ],
+                    28: [ 2, 21 ],
+                    29: [ 1, 45 ]
+                }, {
+                    16: [ 1, 46 ]
+                }, {
+                    14: [ 1, 19 ],
+                    19: [ 1, 18 ],
+                    25: [ 1, 20 ],
+                    31: 47
+                }, {
+                    21: [ 2, 33 ],
+                    28: [ 1, 49 ],
+                    34: 48
+                }, {
+                    21: [ 2, 30 ],
+                    28: [ 2, 30 ],
+                    29: [ 1, 50 ]
+                }, {
+                    11: 51,
+                    14: [ 1, 42 ]
+                }, {
+                    16: [ 1, 52 ]
+                }, {
+                    16: [ 1, 53 ]
+                }, {
+                    16: [ 2, 13 ],
+                    22: [ 1, 54 ]
+                }, {
+                    21: [ 1, 55 ]
+                }, {
+                    6: 36,
+                    7: 37,
+                    8: 38,
+                    13: [ 1, 8 ],
+                    20: 56,
+                    21: [ 2, 37 ],
+                    23: [ 1, 9 ],
+                    30: [ 1, 10 ]
+                }, {
+                    6: 36,
+                    7: 37,
+                    8: 38,
+                    13: [ 1, 8 ],
+                    20: 57,
+                    21: [ 2, 37 ],
+                    23: [ 1, 9 ],
+                    30: [ 1, 10 ]
+                }, {
+                    6: 36,
+                    7: 37,
+                    8: 38,
+                    13: [ 1, 8 ],
+                    20: 58,
+                    21: [ 2, 37 ],
+                    23: [ 1, 9 ],
+                    30: [ 1, 10 ]
+                }, {
+                    16: [ 1, 59 ]
+                }, {
+                    16: [ 2, 8 ]
+                }, {
+                    16: [ 2, 9 ]
+                }, {
+                    16: [ 2, 40 ],
+                    21: [ 2, 40 ],
+                    28: [ 2, 40 ],
+                    36: [ 1, 60 ]
+                }, {
+                    21: [ 1, 61 ]
+                }, {
+                    14: [ 1, 26 ],
+                    26: 62
+                }, {
+                    11: 63,
+                    14: [ 1, 42 ]
+                }, {
+                    1: [ 2, 23 ],
+                    9: [ 2, 23 ],
+                    13: [ 2, 23 ],
+                    21: [ 2, 23 ],
+                    23: [ 2, 23 ],
+                    30: [ 2, 23 ]
+                }, {
+                    16: [ 2, 25 ],
+                    28: [ 1, 28 ],
+                    32: 64
+                }, {
+                    21: [ 1, 65 ]
+                }, {
+                    14: [ 1, 30 ],
+                    33: 66
+                }, {
+                    11: 67,
+                    14: [ 1, 42 ]
+                }, {
+                    16: [ 2, 29 ],
+                    28: [ 2, 29 ]
+                }, {
+                    1: [ 2, 10 ],
+                    9: [ 2, 10 ],
+                    13: [ 2, 10 ],
+                    21: [ 2, 10 ],
+                    23: [ 2, 10 ],
+                    30: [ 2, 10 ]
+                }, {
+                    1: [ 2, 11 ],
+                    9: [ 2, 11 ],
+                    13: [ 2, 11 ],
+                    21: [ 2, 11 ],
+                    23: [ 2, 11 ],
+                    30: [ 2, 11 ]
+                }, {
+                    10: 68,
+                    11: 40,
+                    12: [ 1, 41 ],
+                    14: [ 1, 42 ]
+                }, {
+                    1: [ 2, 12 ],
+                    9: [ 2, 12 ],
+                    13: [ 2, 12 ],
+                    21: [ 2, 12 ],
+                    23: [ 2, 12 ],
+                    30: [ 2, 12 ]
+                }, {
+                    21: [ 2, 34 ]
+                }, {
+                    21: [ 2, 35 ]
+                }, {
+                    21: [ 2, 36 ]
+                }, {
+                    1: [ 2, 15 ],
+                    9: [ 2, 15 ],
+                    13: [ 2, 15 ],
+                    21: [ 2, 15 ],
+                    23: [ 2, 15 ],
+                    30: [ 2, 15 ]
+                }, {
+                    11: 69,
+                    14: [ 1, 42 ]
+                }, {
+                    22: [ 2, 18 ]
+                }, {
+                    21: [ 2, 20 ],
+                    27: 70,
+                    28: [ 1, 44 ]
+                }, {
+                    21: [ 2, 22 ],
+                    28: [ 2, 22 ]
+                }, {
+                    16: [ 2, 24 ]
+                }, {
+                    16: [ 2, 26 ],
+                    28: [ 2, 26 ]
+                }, {
+                    21: [ 2, 33 ],
+                    28: [ 1, 49 ],
+                    34: 71
+                }, {
+                    21: [ 2, 31 ],
+                    28: [ 2, 31 ]
+                }, {
+                    16: [ 2, 14 ]
+                }, {
+                    16: [ 2, 41 ],
+                    21: [ 2, 41 ],
+                    28: [ 2, 41 ]
+                }, {
+                    21: [ 2, 19 ]
+                }, {
+                    21: [ 2, 32 ]
+                } ],
+                defaultActions: {
+                    2: [ 2, 1 ],
+                    11: [ 2, 3 ],
+                    14: [ 2, 16 ],
+                    15: [ 2, 17 ],
+                    40: [ 2, 8 ],
+                    41: [ 2, 9 ],
+                    56: [ 2, 34 ],
+                    57: [ 2, 35 ],
+                    58: [ 2, 36 ],
+                    61: [ 2, 18 ],
+                    64: [ 2, 24 ],
+                    68: [ 2, 14 ],
+                    70: [ 2, 19 ],
+                    71: [ 2, 32 ]
+                },
+                parseError: function parseError(str, hash) {
+                    throw new Error(str);
+                },
+                parse: function parse(input) {
+                    var self = this, stack = [ 0 ], vstack = [ null ], lstack = [], table = this.table, yytext = "", yylineno = 0, yyleng = 0, recovering = 0, TERROR = 2, EOF = 1;
+                    this.lexer.setInput(input);
+                    this.lexer.yy = this.yy;
+                    this.yy.lexer = this.lexer;
+                    if (typeof this.lexer.yylloc == "undefined") this.lexer.yylloc = {};
+                    var yyloc = this.lexer.yylloc;
+                    lstack.push(yyloc);
+                    if (typeof this.yy.parseError === "function") this.parseError = this.yy.parseError;
+                    function popStack(n) {
+                        stack.length = stack.length - 2 * n;
+                        vstack.length = vstack.length - n;
+                        lstack.length = lstack.length - n;
+                    }
+                    function lex() {
+                        var token;
+                        token = self.lexer.lex() || 1;
+                        if (typeof token !== "number") {
+                            token = self.symbols_[token] || token;
+                        }
+                        return token;
+                    }
+                    var symbol, preErrorSymbol, state, action, a, r, yyval = {}, p, len, newState, expected;
+                    while (true) {
+                        state = stack[stack.length - 1];
+                        if (this.defaultActions[state]) {
+                            action = this.defaultActions[state];
+                        } else {
+                            if (symbol == null) symbol = lex();
+                            action = table[state] && table[state][symbol];
+                        }
+                        _handle_error : if (typeof action === "undefined" || !action.length || !action[0]) {
+                            if (!recovering) {
+                                expected = [];
+                                for (p in table[state]) if (this.terminals_[p] && p > 2) {
+                                    expected.push("'" + this.terminals_[p] + "'");
+                                }
+                                var errStr = "";
+                                if (this.lexer.showPosition) {
+                                    errStr = "Parse error on line " + (yylineno + 1) + ":\n" + this.lexer.showPosition() + "\nExpecting " + expected.join(", ") + ", got '" + this.terminals_[symbol] + "'";
+                                } else {
+                                    errStr = "Parse error on line " + (yylineno + 1) + ": Unexpected " + (symbol == 1 ? "end of input" : "'" + (this.terminals_[symbol] || symbol) + "'");
+                                }
+                                this.parseError(errStr, {
+                                    text: this.lexer.match,
+                                    token: this.terminals_[symbol] || symbol,
+                                    line: this.lexer.yylineno,
+                                    loc: yyloc,
+                                    expected: expected
+                                });
+                            }
+                            if (recovering == 3) {
+                                if (symbol == EOF) {
+                                    throw new Error(errStr || "Parsing halted.");
+                                }
+                                yyleng = this.lexer.yyleng;
+                                yytext = this.lexer.yytext;
+                                yylineno = this.lexer.yylineno;
+                                yyloc = this.lexer.yylloc;
+                                symbol = lex();
+                            }
+                            while (1) {
+                                if (TERROR.toString() in table[state]) {
+                                    break;
+                                }
+                                if (state == 0) {
+                                    throw new Error(errStr || "Parsing halted.");
+                                }
+                                popStack(1);
+                                state = stack[stack.length - 1];
+                            }
+                            preErrorSymbol = symbol;
+                            symbol = TERROR;
+                            state = stack[stack.length - 1];
+                            action = table[state] && table[state][TERROR];
+                            recovering = 3;
+                        }
+                        if (action[0] instanceof Array && action.length > 1) {
+                            throw new Error("Parse Error: multiple actions possible at state: " + state + ", token: " + symbol);
+                        }
+                        switch (action[0]) {
+                          case 1:
+                            stack.push(symbol);
+                            vstack.push(this.lexer.yytext);
+                            lstack.push(this.lexer.yylloc);
+                            stack.push(action[1]);
+                            symbol = null;
+                            if (!preErrorSymbol) {
+                                yyleng = this.lexer.yyleng;
+                                yytext = this.lexer.yytext;
+                                yylineno = this.lexer.yylineno;
+                                yyloc = this.lexer.yylloc;
+                                if (recovering > 0) recovering--;
+                            } else {
+                                symbol = preErrorSymbol;
+                                preErrorSymbol = null;
+                            }
+                            break;
+                          case 2:
+                            len = this.productions_[action[1]][1];
+                            yyval.$ = vstack[vstack.length - len];
+                            yyval._$ = {
+                                first_line: lstack[lstack.length - (len || 1)].first_line,
+                                last_line: lstack[lstack.length - 1].last_line,
+                                first_column: lstack[lstack.length - (len || 1)].first_column,
+                                last_column: lstack[lstack.length - 1].last_column
+                            };
+                            r = this.performAction.call(yyval, yytext, yyleng, yylineno, this.yy, action[1], vstack, lstack);
+                            if (typeof r !== "undefined") {
+                                return r;
+                            }
+                            if (len) {
+                                stack = stack.slice(0, -1 * len * 2);
+                                vstack = vstack.slice(0, -1 * len);
+                                lstack = lstack.slice(0, -1 * len);
+                            }
+                            stack.push(this.productions_[action[1]][0]);
+                            vstack.push(yyval.$);
+                            lstack.push(yyval._$);
+                            newState = table[stack[stack.length - 2]][stack[stack.length - 1]];
+                            stack.push(newState);
+                            break;
+                          case 3:
+                            return true;
+                        }
+                    }
+                    return true;
+                }
+            };
+            var lexer = function() {
+                var lexer = {
+                    EOF: 1,
+                    parseError: function parseError(str, hash) {
+                        if (this.yy.parseError) {
+                            this.yy.parseError(str, hash);
+                        } else {
+                            throw new Error(str);
+                        }
+                    },
+                    setInput: function(input) {
+                        this._input = input;
+                        this._more = this._less = this.done = false;
+                        this.yylineno = this.yyleng = 0;
+                        this.yytext = this.matched = this.match = "";
+                        this.conditionStack = [ "INITIAL" ];
+                        this.yylloc = {
+                            first_line: 1,
+                            first_column: 0,
+                            last_line: 1,
+                            last_column: 0
+                        };
+                        return this;
+                    },
+                    input: function() {
+                        var ch = this._input[0];
+                        this.yytext += ch;
+                        this.yyleng++;
+                        this.match += ch;
+                        this.matched += ch;
+                        var lines = ch.match(/\n/);
+                        if (lines) this.yylineno++;
+                        this._input = this._input.slice(1);
+                        return ch;
+                    },
+                    unput: function(ch) {
+                        this._input = ch + this._input;
+                        return this;
+                    },
+                    more: function() {
+                        this._more = true;
+                        return this;
+                    },
+                    pastInput: function() {
+                        var past = this.matched.substr(0, this.matched.length - this.match.length);
+                        return (past.length > 20 ? "..." : "") + past.substr(-20).replace(/\n/g, "");
+                    },
+                    upcomingInput: function() {
+                        var next = this.match;
+                        if (next.length < 20) {
+                            next += this._input.substr(0, 20 - next.length);
+                        }
+                        return (next.substr(0, 20) + (next.length > 20 ? "..." : "")).replace(/\n/g, "");
+                    },
+                    showPosition: function() {
+                        var pre = this.pastInput();
+                        var c = (new Array(pre.length + 1)).join("-");
+                        return pre + this.upcomingInput() + "\n" + c + "^";
+                    },
+                    next: function() {
+                        if (this.done) {
+                            return this.EOF;
+                        }
+                        if (!this._input) this.done = true;
+                        var token, match, tempMatch, index, col, lines;
+                        if (!this._more) {
+                            this.yytext = "";
+                            this.match = "";
+                        }
+                        var rules = this._currentRules();
+                        for (var i = 0; i < rules.length; i++) {
+                            tempMatch = this._input.match(this.rules[rules[i]]);
+                            if (tempMatch && (!match || tempMatch[0].length > match[0].length)) {
+                                match = tempMatch;
+                                index = i;
+                                if (!this.options.flex) break;
+                            }
+                        }
+                        if (match) {
+                            lines = match[0].match(/\n.*/g);
+                            if (lines) this.yylineno += lines.length;
+                            this.yylloc = {
+                                first_line: this.yylloc.last_line,
+                                last_line: this.yylineno + 1,
+                                first_column: this.yylloc.last_column,
+                                last_column: lines ? lines[lines.length - 1].length - 1 : this.yylloc.last_column + match[0].length
+                            };
+                            this.yytext += match[0];
+                            this.match += match[0];
+                            this.yyleng = this.yytext.length;
+                            this._more = false;
+                            this._input = this._input.slice(match[0].length);
+                            this.matched += match[0];
+                            token = this.performAction.call(this, this.yy, this, rules[index], this.conditionStack[this.conditionStack.length - 1]);
+                            if (token) return token; else return;
+                        }
+                        if (this._input === "") {
+                            return this.EOF;
+                        } else {
+                            this.parseError("Lexical error on line " + (this.yylineno + 1) + ". Unrecognized text.\n" + this.showPosition(), {
+                                text: "",
+                                token: null,
+                                line: this.yylineno
+                            });
+                        }
+                    },
+                    lex: function lex() {
+                        var r = this.next();
+                        if (typeof r !== "undefined") {
+                            return r;
+                        } else {
+                            return this.lex();
+                        }
+                    },
+                    begin: function begin(condition) {
+                        this.conditionStack.push(condition);
+                    },
+                    popState: function popState() {
+                        return this.conditionStack.pop();
+                    },
+                    _currentRules: function _currentRules() {
+                        return this.conditions[this.conditionStack[this.conditionStack.length - 1]].rules;
+                    },
+                    topState: function() {
+                        return this.conditionStack[this.conditionStack.length - 2];
+                    },
+                    pushState: function begin(condition) {
+                        this.begin(condition);
+                    }
+                };
+                lexer.options = {};
+                lexer.performAction = function anonymous(yy, yy_, $avoiding_name_collisions, YY_START) {
+                    var YYSTATE = YY_START;
+                    switch ($avoiding_name_collisions) {
+                      case 0:
+                        break;
+                      case 1:
+                        break;
+                      case 2:
+                        break;
+                      case 3:
+                        return "SEMICOLON";
+                        break;
+                      case 4:
+                        return "COLON";
+                        break;
+                      case 5:
+                        return "OPEN_BRACE";
+                        break;
+                      case 6:
+                        return "CLOSE_BRACE";
+                        break;
+                      case 7:
+                        return "module";
+                        break;
+                      case 8:
+                        return "import";
+                        break;
+                      case 9:
+                        return "export";
+                        break;
+                      case 10:
+                        return 15;
+                        break;
+                      case 11:
+                        return 17;
+                        break;
+                      case 12:
+                        return 22;
+                        break;
+                      case 13:
+                        return "WILDCARD";
+                        break;
+                      case 14:
+                        return 28;
+                        break;
+                      case 15:
+                        return 36;
+                        break;
+                      case 16:
+                        return "Id";
+                        break;
+                      case 17:
+                        return "String";
+                        break;
+                      case 18:
+                        return "String";
+                        break;
+                      case 19:
+                        return 9;
+                        break;
+                    }
+                };
+                lexer.rules = [ /^\n+/, /^\s+/, /^\t+/, /^;/, /^:/, /^\{/, /^\}/, /^module\b/, /^import\b/, /^export\b/, /^at\b/, /^is\b/, /^from\b/, /^\*/, /^,/, /^\./, /^[a-zA-Z_$][0-9a-zA-Z_$]*/, /^'[^\']+'/, /^"[^\"]+"/, /^$/ ];
+                lexer.conditions = {
+                    INITIAL: {
+                        rules: [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 ],
+                        inclusive: true
+                    }
+                };
+                return lexer;
+            }();
+            parser.lexer = lexer;
+            return parser;
+        }();
+        if (typeof require !== "undefined" && typeof exports !== "undefined") {
+            exports.parser = harmony_parser;
+            exports.parse = function() {
+                return harmony_parser.parse.apply(harmony_parser, arguments);
+            };
+            exports.main = function commonjsMain(args) {
+                if (!args[1]) throw new Error("Usage: " + args[0] + " FILE");
+                if (typeof process !== "undefined") {
+                    var source = require("fs").readFileSync(require("path").join(process.cwd(), args[1]), "utf8");
+                } else {
+                    var cwd = require("file").path(require("file").cwd());
+                    var source = cwd.join(args[1]).read({
+                        charset: "utf-8"
+                    });
+                }
+                return exports.parser.parse(source);
+            };
+            if (typeof module !== "undefined" && require.main === module) {
+                exports.main(typeof process !== "undefined" ? process.argv.slice(1) : require("system").args);
+            }
+        }
+        return harmony_parser;
+    }();
+    var when = function() {
+        var module = {};
+        (function(define) {
+            define(function() {
+                var freeze, reduceArray, undef;
+                function noop() {}
+                function allocateArray(n) {
+                    return new Array(n);
+                }
+                freeze = Object.freeze || function(o) {
+                    return o;
+                };
+                reduceArray = [].reduce || function(reduceFunc) {
+                    var arr, args, reduced, len, i;
+                    i = 0;
+                    arr = Object(this);
+                    len = arr.length >>> 0;
+                    args = arguments;
+                    if (args.length <= 1) {
+                        for (;;) {
+                            if (i in arr) {
+                                reduced = arr[i++];
+                                break;
+                            }
+                            if (++i >= len) {
+                                throw new TypeError;
+                            }
+                        }
+                    } else {
+                        reduced = args[1];
+                    }
+                    for (; i < len; ++i) {
+                        if (i in arr) reduced = reduceFunc(reduced, arr[i], i, arr);
+                    }
+                    return reduced;
+                };
+                function Promise() {}
+                function resolved(value) {
+                    var p = new Promise;
+                    p.then = function(callback) {
+                        checkCallbacks(arguments);
+                        var nextValue;
+                        try {
+                            if (callback) nextValue = callback(value);
+                            return promise(nextValue === undef ? value : nextValue);
+                        } catch (e) {
+                            return rejected(e);
+                        }
+                    };
+                    return freeze(p);
+                }
+                function rejected(reason) {
+                    var p = new Promise;
+                    p.then = function(callback, errback) {
+                        checkCallbacks(arguments);
+                        var nextValue;
+                        try {
+                            if (errback) {
+                                nextValue = errback(reason);
+                                return promise(nextValue === undef ? reason : nextValue);
+                            }
+                            return rejected(reason);
+                        } catch (e) {
+                            return rejected(e);
+                        }
+                    };
+                    return freeze(p);
+                }
+                function checkCallbacks(arrayOfCallbacks) {
+                    var arg, i = arrayOfCallbacks.length;
+                    while (i) {
+                        arg = arrayOfCallbacks[--i];
+                        if (arg != null && typeof arg != "function") throw new Error("callback is not a function");
+                    }
+                }
+                function defer() {
+                    var deferred, promise, listeners, progressHandlers, _then, _progress, complete;
+                    listeners = [];
+                    progressHandlers = [];
+                    _then = function unresolvedThen(callback, errback, progback) {
+                        checkCallbacks(arguments);
+                        var deferred = defer();
+                        listeners.push(function(promise) {
+                            promise.then(callback, errback).then(deferred.resolve, deferred.reject, deferred.progress);
+                        });
+                        progback && progressHandlers.push(progback);
+                        return deferred.promise;
+                    };
+                    function then(callback, errback, progback) {
+                        return _then(callback, errback, progback);
+                    }
+                    function resolve(val) {
+                        complete(resolved(val));
+                    }
+                    function reject(err) {
+                        complete(rejected(err));
+                    }
+                    _progress = function(update) {
+                        var progress, i = 0;
+                        while (progress = progressHandlers[i++]) progress(update);
+                    };
+                    function progress(update) {
+                        _progress(update);
+                    }
+                    complete = function(completed) {
+                        var listener, i = 0;
+                        _then = completed.then;
+                        complete = _progress = function alreadyCompleted() {
+                            throw new Error("already completed");
+                        };
+                        progressHandlers = undef;
+                        while (listener = listeners[i++]) {
+                            listener(completed);
+                        }
+                        listeners = [];
+                    };
+                    deferred = {};
+                    promise = new Promise;
+                    promise.then = deferred.then = then;
+                    deferred.promise = freeze(promise);
+                    deferred.resolver = freeze({
+                        resolve: deferred.resolve = resolve,
+                        reject: deferred.reject = reject,
+                        progress: deferred.progress = progress
+                    });
+                    return deferred;
+                }
+                function isPromise(promiseOrValue) {
+                    return promiseOrValue && typeof promiseOrValue.then === "function";
+                }
+                function when(promiseOrValue, callback, errback, progressHandler) {
+                    var trustedPromise = promise(promiseOrValue);
+                    return trustedPromise.then(callback, errback, progressHandler);
+                }
+                function promise(promiseOrValue) {
+                    var promise, deferred;
+                    if (promiseOrValue instanceof Promise) {
+                        promise = promiseOrValue;
+                    } else {
+                        deferred = defer();
+                        if (isPromise(promiseOrValue)) {
+                            promiseOrValue.then(deferred.resolve, deferred.reject, deferred.progress);
+                            promise = deferred.promise;
+                        } else {
+                            deferred.resolve(promiseOrValue);
+                            promise = deferred.promise;
+                        }
+                    }
+                    return promise;
+                }
+                function some(promisesOrValues, howMany, callback, errback, progressHandler) {
+                    var toResolve, results, ret, deferred, resolver, rejecter, handleProgress, len, i;
+                    len = promisesOrValues.length >>> 0;
+                    toResolve = Math.max(0, Math.min(howMany, len));
+                    results = [];
+                    deferred = defer();
+                    ret = when(deferred, callback, errback, progressHandler);
+                    function resolve(val) {
+                        resolver(val);
+                    }
+                    function reject(err) {
+                        rejecter(err);
+                    }
+                    function progress(update) {
+                        handleProgress(update);
+                    }
+                    function complete() {
+                        resolver = rejecter = handleProgress = noop;
+                    }
+                    if (!toResolve) {
+                        deferred.resolve(results);
+                    } else {
+                        resolver = function(val) {
+                            results.push(val);
+                            if (!--toResolve) {
+                                complete();
+                                deferred.resolve(results);
+                            }
+                        };
+                        rejecter = function(err) {
+                            complete();
+                            deferred.reject(err);
+                        };
+                        handleProgress = deferred.progress;
+                        for (i = 0; i < len; ++i) {
+                            if (i in promisesOrValues) {
+                                when(promisesOrValues[i], resolve, reject, progress);
+                            }
+                        }
+                    }
+                    return ret;
+                }
+                function all(promisesOrValues, callback, errback, progressHandler) {
+                    var results, promise;
+                    results = allocateArray(promisesOrValues.length);
+                    promise = reduce(promisesOrValues, reduceIntoArray, results);
+                    return when(promise, callback, errback, progressHandler);
+                }
+                function reduceIntoArray(current, val, i) {
+                    current[i] = val;
+                    return current;
+                }
+                function any(promisesOrValues, callback, errback, progressHandler) {
+                    function unwrapSingleResult(val) {
+                        return callback(val[0]);
+                    }
+                    return some(promisesOrValues, 1, unwrapSingleResult, errback, progressHandler);
+                }
+                function map(promisesOrValues, mapFunc) {
+                    var results, i;
+                    i = promisesOrValues.length;
+                    results = allocateArray(i);
+                    for (; i >= 0; --i) {
+                        if (i in promisesOrValues) results[i] = when(promisesOrValues[i], mapFunc);
+                    }
+                    return reduce(results, reduceIntoArray, results);
+                }
+                function reduce(promisesOrValues, reduceFunc, initialValue) {
+                    var total, args;
+                    total = promisesOrValues.length;
+                    args = [ function(current, val, i) {
+                        return when(current, function(c) {
+                            return when(val, function(value) {
+                                return reduceFunc(c, value, i, total);
+                            });
+                        });
+                    } ];
+                    if (arguments.length >= 3) args.push(initialValue);
+                    return promise(reduceArray.apply(promisesOrValues, args));
+                }
+                function chain(promiseOrValue, resolver, resolveValue) {
+                    var useResolveValue = arguments.length > 2;
+                    return when(promiseOrValue, function(val) {
+                        if (useResolveValue) val = resolveValue;
+                        resolver.resolve(val);
+                        return val;
+                    }, function(e) {
+                        resolver.reject(e);
+                        return rejected(e);
+                    }, resolver.progress);
+                }
+                when.defer = defer;
+                when.isPromise = isPromise;
+                when.some = some;
+                when.all = all;
+                when.any = any;
+                when.reduce = reduce;
+                when.map = map;
+                when.chain = chain;
+                return when;
+            });
+        })(typeof define == "function" ? define : function(factory) {
+            typeof module != "undefined" ? module.exports = factory() : this.when = factory();
+        });
+        return module.exports;
+    }();
+    var flavour = function() {
+        var modules = [];
+        return {
+            registerModule: function(index, src, name) {},
+            getModules: function() {
+                return modules;
+            },
+            loadModule: function(moduleConf, contents) {
+                var context = moduleConf.imports;
+                var module;
+                var moduleArgs = [], argsName = [];
+                for (var i in context) {
+                    if (context.hasOwnProperty(i)) {
+                        argsName.push(i);
+                        moduleArgs.push(context[i]);
+                    }
+                }
+                console.warn("Should have mocked window");
+                var returns = moduleConf.exports ? "{" + moduleConf.exports.map(function(v) {
+                    return v.dest + ":(" + [ "window." + v.src, "this." + v.src, v.src ].join("||") + ")";
+                }).join(",") + "}" : "{}";
+                modules.push({
+                    body: contents,
+                    argNames: argsName,
+                    argRefs: moduleArgs,
+                    exports: returns
+                });
+                return modules.length - 1;
+            },
+            loadModuleReferenceBySource: function(src) {
+                try {
+                    return require(src);
+                } catch (e) {
+                    throw new Error("The required module %1 doesn't exist".replace("%1", src));
+                }
+            },
+            retrieveFileContents: function(uri, moduleConf, _moduleSrc, modulePromise) {
+                function serverModule(parsedURL) {
+                    var defer = when.defer();
+                    var get = require(parsedURL.protocol.indexOf("https") !== -1 ? "https" : "http").get;
+                    var newURL = {
+                        host: parsedURL.host,
+                        path: parsedURL.pathname
+                    };
+                    var data = "";
+                    parsedURL.port && (newURL.port = parsedURL.port);
+                    get(newURL, function(res) {
+                        res.on("data", function(chunk) {
+                            data += chunk;
+                        });
+                        res.on("end", function() {
+                            defer.resolve(data);
+                        });
+                        res.on("error", function(msg) {
+                            defer.reject(msg);
+                        });
+                    });
+                    return defer;
+                }
+                function _serverPathDetection(uri) {
+                    var path;
+                    try {
+                        path = require.resolve(uri);
+                    } catch (e) {}
+                    try {
+                        path = !path ? require("fs").statSync(__dirname + "/../" + uri).isFile() && __dirname + "/../" + uri : path;
+                    } catch (e) {}
+                    try {
+                        path = !path ? require("fs").statSync(process.cwd() + "/" + uri).isFile() && process.cwd() + "/" + uri : path;
+                    } catch (e) {}
+                    return path;
+                }
+                var modPath, url = require("url"), parsedURL = url.parse(uri);
+                if (parsedURL.host) {
+                    when(serverModule(parsedURL)).then(function(moduleSrc) {
+                        moduleConf.contents = moduleSrc;
+                        when(_moduleSrc(moduleConf)).then(function(conf) {
+                            modulePromise.resolve(conf);
+                            return conf;
+                        }, function(msg) {
+                            modulePromise.reject(msg);
+                        });
+                    }, function xhrError(msg) {
+                        _error('Unable to fetch the module "' + uri + '" because: ' + msg);
+                    });
+                    return modulePromise;
+                } else {
+                    modPath = _serverPathDetection(uri);
+                    if (!modPath) {
+                        modulePromise.reject("Unable to locate file " + uri);
+                        return modulePromise;
+                    } else if (this.is(modPath, "object")) {
+                        moduleConf.deps = moduleConf.deps || {};
+                        moduleConf.deps[modPath.uri] = modPath.node_module;
+                    } else {
+                        try {
+                            moduleConf.contents = require("fs").readFileSync(modPath, "utf-8");
+                        } catch (e) {
+                            modulePromise.reject(e.message);
+                            return modulePromise;
+                        }
+                    }
+                    when(_moduleSrc(moduleConf)).then(function(conf) {
+                        modulePromise.resolve(conf);
+                        return conf;
+                    }, function(msg) {
+                        modulePromise.reject(msg);
+                    });
+                    return modulePromise;
+                }
+            },
+            onLoad: function(initConfig, initModules, s6d) {
+                exports = module.exports = s6d;
+            }
+        };
+    }();
+    (function(me, parser, when, flavourConfig, undefined) {
+        if (typeof parser.parse !== "function") {
+            throw "No parser provided.";
+        }
+        function is(obj, type) {
+            return Object.prototype.toString.call(obj).toLowerCase() == "[object " + type.toLowerCase() + "]";
+        }
+        function flavour(name, args) {
+            if (name in flavour) {
+                return flavour[name].apply({
+                    is: is
+                }, args);
+            }
+            return null;
+        }
+        flavour.register = function(name, fn) {
+            if (!(name in this)) {
+                flavour[name] = fn;
+            }
+        };
+        for (var i in flavourConfig) {
+            if (!flavourConfig.hasOwnProperty(i)) {
+                continue;
+            }
+            flavour.register(i, flavourConfig[i]);
+        }
+        var modules = {}, _errModules = null, _isServer = typeof window == "undefined", _runInTag;
+        var _plugins = {
+            modularize: function modularizePlugin(vars) {
+                function fn(globalVar) {
+                    if (!me.hasOwnProperty(globalVar)) {
+                        return 'No global "' + globalVar + '"';
+                    }
+                    modules[globalVar] = me[globalVar];
+                    return true;
+                }
+                if (is(vars, "array")) {
+                    for (var i = 0; i < vars.length; i++) {
+                        fn(vars[i]);
+                    }
+                } else {
+                    fn(vars);
+                }
+            },
+            noGlobal: function noGlobalPlugin(vars) {
+                var fn = function(globalVar) {
+                    if (!me.hasOwnProperty(globalVar)) {
+                        return 'No global "' + globalVar + '"';
+                    }
+                    delete me[globalVar];
+                    return true;
+                };
+                if (is(vars, "array")) {
+                    for (var i = 0; i < vars.length; i++) {
+                        fn(vars[i]);
+                    }
+                } else {
+                    fn(vars);
+                }
+            }
+        };
+        function parse(declaration, conf) {
+            try {
+                var module = parser.parse(declaration);
+                return module;
+            } catch (e) {
+                return "Invalid declaration \n" + e.message + "\nDeclaration: " + declaration;
+            }
+        }
+        function _registerModule(module, src, name) {
+            var existingMod;
+            if (src) {
+                existingMod = modules[src];
+                if (existingMod && !when.isPromise(existingMod)) {
+                    return "Duplicating module " + src;
+                }
+                modules[src] = module;
+            }
+            if (name) {
+                existingMod = modules[name];
+                if (existingMod && !when.isPromise(existingMod)) {
+                    return "Duplicating module " + name;
+                }
+                modules[name] = module;
+            }
+        }
+        flavour.register("registerModule", _registerModule);
+        function loadModule(moduleConf, contents) {
+            !moduleConf && (moduleConf = {});
+            moduleConf.imports = moduleConf.imports || {};
+            var module = flavour("loadModule", [ moduleConf, contents, _runInTag ]);
+            var _err = flavour("registerModule", [ module, moduleConf._internals.src, moduleConf.name ]);
+            return _err || module;
+        }
+        function applyConfiguration(conf) {
+            var moduleConf = {};
+            var confPromises = [];
+            moduleConf._internals = conf._internals;
+            function importLoader(declaration) {
+                moduleConf.imports = moduleConf.imports || {};
+                var _dep = modules[declaration.from.path];
+                if (_dep) {
+                    if (when.isPromise(_dep)) {
+                        _dep.then(function(module) {
+                            for (var i = 0, _l = declaration.vars.length; i < _l; i++) {
+                                var _importName = declaration.vars[i];
+                                moduleConf.imports[_importName] = module[_importName];
+                            }
+                        });
+                        confPromises.push(_dep);
+                    } else {
+                        for (var i = 0, _l = declaration.vars.length; i < _l; i++) {
+                            var _importName = declaration.vars[i];
+                            moduleConf.imports[_importName] = _dep[_importName];
+                        }
+                    }
+                } else {
+                    var _p = _module(declaration.from.path, function(module) {
+                        for (var i = 0, _l = declaration.vars.length; i < _l; i++) {
+                            var _importName = declaration.vars[i];
+                            moduleConf.imports[_importName] = module[_importName];
+                        }
+                    });
+                    if (!modules[declaration.from.path]) {
+                        modules[declaration.from.path] = _p;
+                    }
+                    if (when.isPromise(modules[declaration.from.path])) {
+                        confPromises.push(_p);
+                    }
+                }
+            }
+            function exportLoader(declaration) {
+                for (var i = 0, _l = declaration.length; i < _l; i++) {
+                    moduleConf.exports = moduleConf.exports || [];
+                    moduleConf.exports.push({
+                        src: declaration[i],
+                        dest: declaration[i]
+                    });
+                }
+            }
+            function moduleLoader(declaration) {
+                moduleConf.name = conf.decl.id;
+                if (declaration.expressions) {
+                    for (var i = 0, _l = declaration.expressions.length; i < _l; i++) {
+                        var expr = declaration.expressions[i];
+                        if (expr.type === "export") {
+                            exportLoader(expr.decl);
+                        } else if (expr.type === "import") {
+                            importLoader(expr.decl);
+                        } else if (expr.type === "module") {
+                            moduleLoader(expr.decl);
+                        }
+                    }
+                } else {
+                    moduleConf.imports = moduleConf.imports || {};
+                    var ref = declaration.path || declaration.src || declaration.id;
+                    var _mod = modules[ref];
+                    if (_mod) {
+                        if (when.isPromise(_mod)) {
+                            _mod.then(function(module) {
+                                moduleConf.imports[declaration.id] = module;
+                                return module;
+                            });
+                            confPromises.push(_mod);
+                        } else {
+                            moduleConf.imports[declaration.id] = _mod;
+                        }
+                    } else if (declaration.path) {
+                        var _p = _module(declaration.path, function(module) {
+                            moduleConf.imports[declaration.id] = module;
+                            return moduleConf;
+                        });
+                        if (!modules[declaration.path]) {
+                            modules[declaration.path] = _p;
+                        }
+                        if (when.isPromise(modules[declaration.path])) {
+                            confPromises.push(_p);
+                        }
+                    } else {
+                        var _dep = flavour("loadModuleReferenceBySource", [ declaration.src ]);
+                        moduleConf.imports[declaration.id] = _dep;
+                    }
+                }
+            }
+            if (conf.type === "module") {
+                moduleConf.name = conf.decl.id;
+                moduleLoader(conf.decl);
+            } else if (conf.type === "export") {
+                exportLoader(conf.decl);
+            } else if (conf.type === "import") {
+                importLoader(conf.decl);
+            }
+            var defer = when.all(confPromises).then(function() {
+                return moduleConf;
+            }, function() {
+                return new Error("Error while loading " + moduleConf._internals.src);
+            });
+            return defer;
+        }
+        function _moduleSrc(conf) {
+            var defer = when.defer(), moduleConf = conf || {}, rawText = conf.contents ? conf.contents : "", declaration = "", module;
+            var comments = rawText.match(/\s*\/\/\s*s6d([\s\S]*?)\/\/\s*-s6d/m);
+            if (!comments) {
+                module = loadModule({
+                    _internals: {
+                        src: conf.src
+                    }
+                }, rawText);
+                if (typeof module === "string") {
+                    return defer.reject(module);
+                }
+                return defer.resolve(module);
+            }
+            var split = comments[1].split("\n");
+            for (var j = 0, _l2 = split.length; j < _l2; j++) {
+                declaration += split[j].trim();
+            }
+            if (declaration.length) {
+                moduleConf = parse(declaration, moduleConf);
+                if (is(moduleConf, "string")) {
+                    defer.reject(moduleConf);
+                } else {
+                    var usedConf = moduleConf[0];
+                    usedConf._internals = {
+                        src: conf.src,
+                        contents: rawText
+                    };
+                    when(applyConfiguration(usedConf)).then(function(moduleConf) {
+                        module = loadModule(moduleConf, moduleConf._internals.contents.replace(comments[0], ""));
+                        defer.resolve(module);
+                        return module;
+                    }, function(e) {
+                        defer.reject(e);
+                        return e;
+                    });
+                }
+            } else {
+                module = loadModule({
+                    _internals: {
+                        src: conf.src
+                    }
+                }, rawText);
+                defer.resolve(module);
+                return module;
+            }
+            return defer.promise || defer;
+        }
+        function _module(moduleSrc, callback, errorFn) {
+            if (modules.hasOwnProperty(moduleSrc)) {
+                if (!when.isPromise(modules[moduleSrc])) {
+                    callback(modules[moduleSrc]);
+                }
+                return modules[moduleSrc];
+            }
+            function _error(msg) {
+                _errModules = _errModules || [];
+                _errModules.indexOf(moduleSrc) === -1 && _errModules.push(moduleSrc);
+                if (is(errorFn, "function")) {
+                    errorFn();
+                } else {
+                    console && console.error("(" + moduleSrc + ") " + msg);
+                    return new Error("(" + moduleSrc + ") " + msg);
+                }
+            }
+            _error.origFn = errorFn;
+            var modulePromise = when.defer();
+            modulePromise.then(callback, _error);
+            var moduleConf = is(moduleSrc, "string") ? {
+                src: moduleSrc
+            } : moduleSrc;
+            var uri = is(moduleSrc, "string") ? moduleSrc : moduleSrc.name;
+            if (uri) {
+                var _contextReturn = flavour("retrieveFileContents", [ uri, moduleConf, _moduleSrc, modulePromise ]);
+                return _contextReturn.promise || _contextReturn;
+            } else {
+                if (is(moduleSrc, "object")) {
+                    when(_moduleSrc(moduleSrc)).then(function(conf) {
+                        modulePromise.resolve(conf);
+                        return conf;
+                    }, function(msg) {
+                        modulePromise.reject(msg);
+                    });
+                }
+                return modulePromise;
+            }
+        }
+        function initConfig(confs) {
+            for (var i = 0; i < confs.length; i++) {
+                var confStr = confs[i];
+                var conf;
+                if (is(confStr, "object")) {
+                    conf = confStr;
+                } else if (is(JSON, "object")) {
+                    conf = JSON.parse(confStr);
+                } else {
+                    var confFn = new Function("return " + confStr);
+                    conf = confFn();
+                }
+                for (var prop in conf) {
+                    if (!conf.hasOwnProperty(prop)) {
+                        continue;
+                    }
+                    if (prop in _plugins) {
+                        _plugins[prop](conf[prop]);
+                    } else if (prop === "runInTag") {
+                        _runInTag = conf[prop];
+                    } else if (prop === "exposeAPI") {
+                        exposeAPI();
+                    }
+                }
+            }
+        }
+        function initModules(modules) {
+            for (var i = 0; i < modules.length; i++) {
+                var module = modules[i];
+                var moduleSrc = module.getAttribute("data-src");
+                moduleSrc && !modules.hasOwnProperty(moduleSrc) && _module(moduleSrc);
+                !moduleSrc && module.innerHTML && _moduleSrc({
+                    contents: module.innerHTML
+                });
+            }
+        }
+        flavour("onLoad", [ initConfig, initModules, s6d ]);
+        var _errCb;
+        function s6d(modulePath, cb) {
+            if (is(modulePath, "object")) {
+                initConfig([ modulePath ]);
+            } else {
+                _module(modulePath, cb, _errCb);
+            }
+        }
+        function exposeAPI() {
+            me.s6d = s6d;
+            me.s6d.src = function(moduleSrc, cb) {
+                _moduleSrc({
+                    contents: moduleSrc
+                }, cb, _errCb);
+            };
+            me.s6d.get = function(moduleName) {
+                if (moduleName) {
+                    return modules[moduleName];
+                } else {
+                    return modules;
+                }
+            };
+            me.s6d.error = function(cb) {
+                if (arguments.length === 0) {
+                    return _errModules;
+                }
+                _errCb = cb;
+            };
+            me.s6d.reset = function() {
+                _errCb = undefined;
+                modules = {};
+                _errModules = null;
+            };
+            me.s6d.flavour = flavour;
+        }
+    })(this, harmonyParser, when, flavour);
+})();
\ No newline at end of file
diff --git a/build/shepherd.server.js b/build/shepherd.server.js
index 76d01c7..af96b91 100644
--- a/build/shepherd.server.js
+++ b/build/shepherd.server.js
@@ -1283,13 +1283,24 @@
             return Object.prototype.toString.call(obj).toLowerCase() == "[object " + type.toLowerCase() + "]";
         }
         function flavour(name, args) {
-            if (name in flavourConfig) {
-                return flavourConfig[name].apply({
+            if (name in flavour) {
+                return flavour[name].apply({
                     is: is
                 }, args);
             }
             return null;
         }
+        flavour.register = function(name, fn) {
+            if (!(name in this)) {
+                flavour[name] = fn;
+            }
+        };
+        for (var i in flavourConfig) {
+            if (!flavourConfig.hasOwnProperty(i)) {
+                continue;
+            }
+            flavour.register(i, flavourConfig[i]);
+        }
         var modules = {}, _errModules = null, _isServer = typeof window == "undefined", _runInTag;
         var _plugins = {
             modularize: function modularizePlugin(vars) {
@@ -1350,11 +1361,12 @@
                 modules[name] = module;
             }
         }
+        flavour.register("registerModule", _registerModule);
         function loadModule(moduleConf, contents) {
             !moduleConf && (moduleConf = {});
             moduleConf.imports = moduleConf.imports || {};
             var module = flavour("loadModule", [ moduleConf, contents, _runInTag ]);
-            var _err = _registerModule(module, moduleConf._internals.src, moduleConf.name);
+            var _err = flavour("registerModule", [ module, moduleConf._internals.src, moduleConf.name ]);
             return _err || module;
         }
         function applyConfiguration(conf) {
@@ -1619,6 +1631,7 @@
                 modules = {};
                 _errModules = null;
             };
+            me.s6d.flavour = flavour;
         }
     })(this, harmonyParser, when, flavour);
 })();
\ No newline at end of file
diff --git a/src/flavours/optimizer.js b/src/flavours/optimizer.js
new file mode 100644
index 0000000..cda1890
--- /dev/null
+++ b/src/flavours/optimizer.js
@@ -0,0 +1,145 @@
+(function () {
+    var modules = [];
+//    var refToModule = {};
+    return {
+        "registerModule": function (index, src, name) {
+            // src && (refToModule[src] = index);
+            // name && (refToModule[name] = index);
+
+        },
+        "getModules": function () {
+            return modules;
+        },
+        /**
+         * Executes the contents of the module and retrieves its exports on the server
+         * @param {Object} moduleConf the configuration of the module
+         * @param {String} contents The textual contents of the module
+         * @return {Object} The module exports as defined in the configuration
+         **/
+        "loadModule" : function (moduleConf, contents) {
+            var context = moduleConf.imports;
+            var module;
+            
+            var moduleArgs = [],
+                argsName = [];
+            for (var i in context) {
+                if (context.hasOwnProperty(i)) {
+                    argsName.push(i);
+                    moduleArgs.push(context[i]);
+                }
+            }
+            console.warn('Should have mocked window');
+            var returns = moduleConf.exports ?
+                '{' + moduleConf.exports.map(function (v) { return v.dest + ':(' + ['window.' + v.src, 'this.' + v.src, v.src].join('||') + ')'; }).join(',') + '}'
+                : '{}';
+            modules.push( {
+                body: contents,
+                argNames: argsName,
+                argRefs: moduleArgs,
+                exports: returns
+            });
+            return modules.length - 1;
+        },
+        "loadModuleReferenceBySource" : function (src) {
+            try {
+                return require(src);
+            } catch (e) {
+                throw new Error('The required module %1 doesn\'t exist'.replace('%1', src));
+            }
+        },
+        "retrieveFileContents" : function (uri, moduleConf, _moduleSrc, modulePromise) {
+            /**
+             * Performs a request to retrieve the contents of a non-local file
+             **/
+            function serverModule (parsedURL) {
+                var defer = when.defer();
+                var get = require(parsedURL.protocol.indexOf('https') !== -1 ? 'https' : 'http').get;
+                var newURL = {host: parsedURL.host, path: parsedURL.pathname};
+                var data = '';
+                parsedURL.port && (newURL.port = parsedURL.port);
+                get(newURL, function (res) {
+                    res.on('data', function (chunk) {
+                        data += chunk;
+                    });
+                    res.on('end', function () {
+                        defer.resolve(data);
+                    });
+                    res.on('error', function (msg) {
+                        defer.reject(msg);
+                    });
+                });
+                return defer;
+            }
+
+            //Path detection follows 3 steps
+            // * resolution by require (ie, let Node try to do the job) in case it is a native module or a Node module
+            // * "natural" path resolution (ie, let Node try to do the job)
+            // * test the path from the location of shepherd.js
+            // * test the path from the current working directory (via process.cwd())
+            function _serverPathDetection (uri) {
+                var path;
+                try {
+                    path =  require.resolve(uri);
+                } catch (e) { /** Nothing here **/ }
+                try {
+                    path =  !path ? require('fs').statSync(__dirname + '/../' + uri).isFile() && (__dirname + '/../' + uri) : path;
+                } catch (e) { /** Nothing here **/ }
+                try {
+                    path =  !path ? require('fs').statSync(process.cwd() + '/' + uri).isFile() && process.cwd() + '/' + uri : path;
+                } catch (e) { /** Nothing here **/ }
+                return path;
+            }
+
+            var modPath, url = require('url'), parsedURL = url.parse(uri);
+            if(parsedURL.host) {
+                when(serverModule(parsedURL)).then(
+                    function (moduleSrc) {
+                        moduleConf.contents = moduleSrc;
+                        when(_moduleSrc(moduleConf)).then(
+                            function (conf) {
+                                modulePromise.resolve(conf);
+                                return conf;
+                            },
+                            function (msg) {
+                                modulePromise.reject(msg);
+                            }
+                        );
+                    },
+                    function xhrError (msg) {
+                        _error('Unable to fetch the module "' + uri + '" because: ' + msg);
+                    }
+                );
+                return modulePromise;
+            } else {
+                modPath = _serverPathDetection(uri);
+                if (!modPath) {
+                    modulePromise.reject('Unable to locate file ' + uri);
+                    return modulePromise;
+                } else if (this.is(modPath, 'object')) { //@TODO Check
+                    moduleConf.deps = moduleConf.deps || {};
+                    moduleConf.deps[modPath.uri] = modPath.node_module;
+                } else {
+                    try {
+                        moduleConf.contents = require('fs').readFileSync(modPath, 'utf-8');
+                    } catch (e) {
+                        modulePromise.reject(e.message);
+                        return modulePromise;
+                    }
+                }
+                when(_moduleSrc(moduleConf)).then(
+                    function (conf) {
+                        modulePromise.resolve(conf);
+                        return conf;
+                    },
+                    function (msg) {
+                        modulePromise.reject(msg);
+                    }
+                );
+                return modulePromise;
+            }
+        },
+        "onLoad" : function (initConfig, initModules, s6d) {
+            exports = module.exports = s6d;
+        }
+    }
+})();
\ No newline at end of file