trying to add enough to the web implementation to run conform. Hitting an error that I didn't see in the simulator; investigating

runtime.js

@@ -185,6 +185,28 @@ var Primitives = (function() {
 	    return typeof(firstArg) === 'string';
 	},
 
+	'symbol->string': function(arity, returnLabel) {
+	    var firstArg = MACHINE.env[MACHINE.env.length-1];
+	    return firstArg;
+	},
+	
+	'box': function(arity, returnLabel) {
+	    var firstArg = MACHINE.env[MACHINE.env.length-1];
+	    return [firstArg];
+	},
+
+	'set-box!': function(arity, returnLabel) {
+	    var firstArg = MACHINE.env[MACHINE.env.length-1];
+	    var secondArg = MACHINE.env[MACHINE.env.length-2];
+	    firstArg[0] = secondArg;
+	    return;
+	},
+
+	'void': function(arity, returnLabel) {
+	    return;
+	},
+
+ 
  	'call/cc': new Closure(callCCEntry,
  			       1,
  			       [],

test-browser-evaluate.rkt

@@ -144,5 +144,5 @@
 
 
 
-#;(test (read (open-input-file "tests/conform/program0.sch"))
+(test (read (open-input-file "tests/conform/program0.sch"))
       (port->string (open-input-file "tests/conform/expected0.txt")))