handle undefined in shoebox

Author: Kelly Selden

src/ember-app.js

@@ -450,6 +450,8 @@ function createShoebox(doc, fastbootInfo) {
 
     let value = shoebox[key];
     let textValue = JSON.stringify(value);
+    if (textValue === undefined) { continue; }
+    
     textValue = escapeJSONString(textValue);
 
     let scriptText = doc.createRawHTMLSection(textValue);

test/fastboot-shoebox-test.js

@@ -23,6 +23,9 @@ describe("FastBootShoebox", function() {
         expect(html).to.include('<script type="fastboot/shoebox" id="shoebox-key4">{"nastyScriptCase":"\\u003cscript\\u003ealert(\'owned\');\\u003c/script\\u003e\\u003c/script\\u003e\\u003c/script\\u003e"}</script>');
 
         expect(html).to.include('<script type="fastboot/shoebox" id="shoebox-key5">{"otherUnicodeChars":"\\u0026\\u0026\\u003e\\u003e\\u003c\\u003c\\u2028\\u2028\\u2029\\u2029"}</script>');
+
+        // ignores undefined
+        expect(html).to.not.include('shoebox-key6');
       });
   });
 
@@ -43,6 +46,9 @@ describe("FastBootShoebox", function() {
         expect(html).to.include('<script type="fastboot/shoebox" id="shoebox-key4">{"nastyScriptCase":"\\u003cscript\\u003ealert(\'owned\');\\u003c/script\\u003e\\u003c/script\\u003e\\u003c/script\\u003e"}</script>');
 
         expect(html).to.include('<script type="fastboot/shoebox" id="shoebox-key5">{"otherUnicodeChars":"\\u0026\\u0026\\u003e\\u003e\\u003c\\u003c\\u2028\\u2028\\u2029\\u2029"}</script>');
+
+        // ignores undefined
+        expect(html).to.not.include('shoebox-key6');
       });
   });
 
@@ -63,6 +69,9 @@ describe("FastBootShoebox", function() {
         expect(html).to.not.include('<script type="fastboot/shoebox" id="shoebox-key4">{"nastyScriptCase":"\\u003cscript\\u003ealert(\'owned\');\\u003c/script\\u003e\\u003c/script\\u003e\\u003c/script\\u003e"}</script>');
 
         expect(html).to.not.include('<script type="fastboot/shoebox" id="shoebox-key5">{"otherUnicodeChars":"\\u0026\\u0026\\u003e\\u003e\\u003c\\u003c\\u2028\\u2028\\u2029\\u2029"}</script>');
+
+        // ignores undefined
+        expect(html).to.not.include('shoebox-key6');
       });
   });
 });