diff --git a/Makefile b/Makefile
index 52c7dfb..ae61dd3 100644
--- a/Makefile
+++ b/Makefile
@@ -9,6 +9,9 @@ test-all:
 	raco make -v --disable-inline tests/test-all.rkt
 	racket tests/test-all.rkt
 
+test-browser-evaluate:
+	raco make -v --disable-inline tests/test-browser-evaluate.rkt
+	racket tests/test-browser-evaluate.rkt
 
 test-compiler:
 	raco make -v --disable-inline tests/test-compiler.rkt
diff --git a/js-assembler/assemble-helpers.rkt b/js-assembler/assemble-helpers.rkt
index 9c3b163..513e63c 100644
--- a/js-assembler/assemble-helpers.rkt
+++ b/js-assembler/assemble-helpers.rkt
@@ -80,7 +80,7 @@
     [(EnvPrefixReference? target)
      (assemble-prefix-reference target)]
     [(PrimitivesReference? target)
-     (format "MACHINE.primitives[~s]" (symbol->string (PrimitivesReference-name target)))]
+     (format "RUNTIME.Primitives[~s]" (symbol->string (PrimitivesReference-name target)))]
     [(ControlFrameTemporary? target)
      (assemble-control-frame-temporary target)]
     [(ModulePrefixTarget? target)
diff --git a/js-assembler/mini-runtime.js b/js-assembler/mini-runtime.js
index c8203cf..a2c39ab 100644
--- a/js-assembler/mini-runtime.js
+++ b/js-assembler/mini-runtime.js
@@ -1278,7 +1278,44 @@
 
 
 
+    //////////////////////////////////////////////////////////////////////
+    (function(scope) {
+        scope.ready = function(f) {
+            if (runtimeIsReady) {
+                notifyWaiter(f);
+            } else {
+                readyWaiters.push(f);
+            }
+        };
+        scope.setReadyTrue = function() {
+            var i;
+            runtimeIsReady = true;
+            for (i = 0; i < readyWaiters.length; i++) {
+                notifyWaiter(readyWaiters[i]);
+            }
+            readyWaiters = [];
+        };
+
+        var runtimeIsReady = false;
+        var readyWaiters = [];
+        var notifyWaiter = function(w) {
+            setTimeout(w, 0);
+        };
+    })(this);
+    //////////////////////////////////////////////////////////////////////
+
+
+
+
     // Exports
+    exports['Primitives'] = Primitives;
+
+    exports['ready'] = ready;
+    // Private: the runtime library will set this flag to true when
+    // the library has finished loading.
+    exports['setReadyTrue'] = setReadyTrue;
+
+
     exports['Machine'] = Machine;
     exports['Frame'] = Frame;
     exports['CallFrame'] = CallFrame;
diff --git a/js-assembler/package.rkt b/js-assembler/package.rkt
index e289a65..f9bb3a5 100644
--- a/js-assembler/package.rkt
+++ b/js-assembler/package.rkt
@@ -4,14 +4,16 @@
          "quote-cdata.rkt"
          "../make.rkt"
          "../make-structs.rkt"
-         "get-runtime.rkt"
+         (prefix-in runtime: "get-runtime.rkt")
          (prefix-in racket: racket/base))
 
 
 
 (provide package
          package-anonymous
-         package-standalone-xhtml)
+         package-standalone-xhtml
+         get-code
+         get-runtime)
 
 ;; Packager: produce single .js files to be included to execute a
 ;; program.  Follows module dependencies.
@@ -36,7 +38,7 @@
 ;; indicates whether we should continue following module paths.
 ;;
 ;; The generated output defines a function called 'invoke' with
-;; four arguments (MACHINE, SUCCESS, FAIL, PARAMS).  When called, it'll
+;; four arguments (MACHINE, SUCCESS, FAIL, PARAMS).  When called, it will
 ;; execute the code to either run standalone expressions or
 ;; load in modules.
 (define (package source-code
@@ -62,13 +64,15 @@
 
   
     (fprintf op "var invoke = (function(MACHINE, SUCCESS, FAIL, PARAMS) {")
-    (make (cons only-bootstrapped-code
-                (list (make-MainModuleSource source-code)))
+    (fprintf op "    plt.runtime.ready(function() {")
+    (make (list (make-MainModuleSource source-code))
           packaging-configuration)
+    (fprintf op "    });");
     (fprintf op "});\n"))
 
 
 
+
 ;; package-standalone-xhtml: X output-port -> void
 (define (package-standalone-xhtml source-code op)
   (display *header* op)
@@ -78,6 +82,35 @@
 
 
 
+;; get-runtime: -> string
+(define (get-runtime)
+  (let* ([buffer (open-output-string)]
+         [packaging-configuration
+          (make-Configuration
+           ;; should-follow?
+           (lambda (p) #t)
+           ;; on
+           (lambda (ast stmts)
+             (assemble/write-invoke stmts buffer)
+             (fprintf buffer "(MACHINE, function() { "))
+           
+           ;; after
+           (lambda (ast stmts)
+             (fprintf buffer " }, FAIL, PARAMS);"))
+           
+           ;; last
+           (lambda ()
+             (fprintf buffer "SUCCESS();")))])
+
+    (display (runtime:get-runtime) buffer)
+        
+    (fprintf buffer "(function(MACHINE, SUCCESS, FAIL, PARAMS) {")
+    (make (list only-bootstrapped-code) packaging-configuration)
+    (fprintf buffer "})(new plt.runtime.Machine(), function(){ plt.runtime.setReadyTrue(); }, function(){}, {});\n")
+    (get-output-string buffer)))
+
+
+
 
 (define *header*
   #<<EOF
diff --git a/tests/test-browser-evaluate.rkt b/tests/test-browser-evaluate.rkt
index fc7be50..4df21b7 100644
--- a/tests/test-browser-evaluate.rkt
+++ b/tests/test-browser-evaluate.rkt
@@ -1,6 +1,5 @@
 #lang racket
 (require "browser-evaluate.rkt"
-         "../js-assembler/get-runtime.rkt"
          "../js-assembler/package.rkt"
          "../make-structs.rkt")
 
diff --git a/tests/test-conform-browser.rkt b/tests/test-conform-browser.rkt
index ffe1fa1..d08c315 100644
--- a/tests/test-conform-browser.rkt
+++ b/tests/test-conform-browser.rkt
@@ -1,7 +1,6 @@
 #lang racket
 (require "browser-evaluate.rkt"
          "../js-assembler/package.rkt"
-	 "../js-assembler/get-runtime.rkt"
          "../make-structs.rkt"
          racket/port
          racket/runtime-path)
diff --git a/tests/test-earley-browser.rkt b/tests/test-earley-browser.rkt
index 6c554dc..7253c00 100644
--- a/tests/test-earley-browser.rkt
+++ b/tests/test-earley-browser.rkt
@@ -1,7 +1,6 @@
 #lang racket
 (require "browser-evaluate.rkt"
          "../js-assembler/package.rkt"
-	 "../js-assembler/get-runtime.rkt"
          "../make-structs.rkt"
          racket/port
          racket/runtime-path
diff --git a/whalesong.rkt b/whalesong.rkt
index 9b95d73..369ab86 100755
--- a/whalesong.rkt
+++ b/whalesong.rkt
@@ -6,8 +6,7 @@
          racket/string
          racket/path
          "make-structs.rkt"
-         "js-assembler/package.rkt"
-         "js-assembler/get-runtime.rkt")
+         "js-assembler/package.rkt")
 
 
 ;; Usage:
@@ -20,14 +19,25 @@
 ;; * Print out the runtime library to standard output.
 ;;
 ;;     $ whalesong get-runtime
+;;
+;;
+;; * Print out the JavaScript for the program.
+;;
+;;     $ whalesong get-javascript main-module-name.rkt
 
 
+
+;; TODO: error trapping
 (define commands `((build 
                     ,(lambda (args)
                       (do-the-build args)))
                    (get-runtime 
                     ,(lambda (args)
-                      (print-the-runtime)))))
+                      (print-the-runtime)))
+                   (get-javascript
+                    ,(lambda (args)
+                       (get-javascript-code (first args))))))
+
 
 ;; listof string
 (define command-names (map (lambda (x) (symbol->string (car x)))
@@ -78,6 +88,11 @@
 (define (print-the-runtime)
   (display (get-runtime)))
 
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(define (get-javascript-code filename)
+  (display (get-code (make-ModuleSource (build-path filename)))))
+
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;