JSHint the library and fix a few bugs

.jshintrc

@@ -0,0 +1,50 @@
+{
+    "predef": [
+        "console",
+        "Ember",
+        "DS",
+        "Handlebars",
+        "Metamorph",
+        "ember_assert",
+        "ember_warn",
+        "ember_deprecate",
+        "ember_deprecateFunc",
+        "require",
+        "equal",
+        "test",
+        "testBoth",
+        "raises",
+        "deepEqual",
+        "start",
+        "stop",
+        "ok",
+        "strictEqual",
+        "module"
+    ],
+
+    "node" : true,
+    "es5" : true,
+    "browser" : true,
+
+    "boss" : true,
+    "curly": false,
+    "debug": false,
+    "devel": false,
+    "eqeqeq": true,
+    "evil": true,
+    "forin": false,
+    "immed": false,
+    "laxbreak": false,
+    "newcap": true,
+    "noarg": true,
+    "noempty": false,
+    "nonew": false,
+    "nomen": false,
+    "onevar": false,
+    "plusplus": false,
+    "regexp": false,
+    "undef": true,
+    "sub": true,
+    "strict": false,
+    "white": false
+}

lib/handlebars/base.js

@@ -1,4 +1,6 @@
 // BEGIN(BROWSER)
+
+/*jshint eqnull:true*/
 var Handlebars = {};
 
 Handlebars.VERSION = "1.0.beta.5";

lib/handlebars/compiler/compiler.js

@@ -1,6 +1,8 @@
 var Handlebars = require("./base");
 
 // BEGIN(BROWSER)
+
+/*jshint eqnull:true*/
 Handlebars.Compiler = function() {};
 Handlebars.JavaScriptCompiler = function() {};
 
@@ -139,7 +141,7 @@ Handlebars.JavaScriptCompiler = function() {};
 
     compileProgram: function(program) {
       var result = new this.compiler().compile(program, this.options);
-      var guid = this.guid++;
+      var guid = this.guid++, depth;
 
       this.usePartial = this.usePartial || result.usePartial;
 
@@ -643,7 +645,7 @@ Handlebars.JavaScriptCompiler = function() {};
     },
 
     invokePartial: function(context) {
-      params = [this.nameLookup('partials', context, 'partial'), "'" + context + "'", this.popStack(), "helpers", "partials"];
+      var params = [this.nameLookup('partials', context, 'partial'), "'" + context + "'", this.popStack(), "helpers", "partials"];
 
       if (this.options.data) {
         params.push("data");
@@ -682,7 +684,8 @@ Handlebars.JavaScriptCompiler = function() {};
       if(guid == null) { return "self.noop"; }
 
       var child = this.environment.children[guid],
-          depths = child.depths.list;
+          depths = child.depths.list, depth;
+
       var programParams = [child.index, child.name, "data"];
 
       for(var i=0, l = depths.length; i<l; i++) {