diff --git a/lib/6to5/transformation/modules/_default.js b/lib/6to5/transformation/modules/_default.js
index 83cd732ca0..9a44d57791 100644
--- a/lib/6to5/transformation/modules/_default.js
+++ b/lib/6to5/transformation/modules/_default.js
@@ -212,9 +212,6 @@ DefaultFormatter.prototype.checkExportIdentifier = function (node) {
 };
 
 DefaultFormatter.prototype.exportSpecifier = function (specifier, node, nodes) {
-  var inherits = false;
-  if (node.specifiers.length === 1) inherits = node;
-
   if (node.source) {
     var ref = this.getExternalReference(node, nodes);
 
diff --git a/lib/6to5/transformation/transformers/es6/classes.js b/lib/6to5/transformation/transformers/es6/classes.js
index 5cdf30ceea..de547859f3 100644
--- a/lib/6to5/transformation/transformers/es6/classes.js
+++ b/lib/6to5/transformation/transformers/es6/classes.js
@@ -35,7 +35,7 @@ exports.ClassExpression = function (node, parent, scope, file) {
  * @param {Node} node
  * @param {File} file
  * @param {Scope} scope
- * @param {Boolean} closure
+ * @param {Boolean} isStatement
  */
 
 function ClassTransformer(node, file, scope, isStatement) {
@@ -99,8 +99,7 @@ ClassTransformer.prototype.run = function () {
     closureArgs.push(superName);
 
     if (!t.isIdentifier(superName)) {
-      var superRef = this.scope.generateUidBasedOnNode(superName, this.file);
-      superName = superRef;
+      superName = this.scope.generateUidBasedOnNode(superName, this.file);
     }
 
     closureParams.push(superName);
@@ -207,7 +206,7 @@ ClassTransformer.prototype.buildBody = function () {
 };
 
 /**
- * Push a method to it's respective mutatorMap.
+ * Push a method to its respective mutatorMap.
  *
  * @param {Node} node MethodDefinition
  */
diff --git a/lib/6to5/transformation/transformers/es6/for-of.js b/lib/6to5/transformation/transformers/es6/for-of.js
index 42125650b0..14140334b7 100644
--- a/lib/6to5/transformation/transformers/es6/for-of.js
+++ b/lib/6to5/transformation/transformers/es6/for-of.js
@@ -18,7 +18,7 @@ exports.ForOfStatement = function (node, parent, scope, file) {
   // inherit comments from the original loop
   t.inheritsComments(loop, node);
 
-  // ensure that it's a block so we can take all it's statemetns
+  // ensure that it's a block so we can take all its statements
   t.ensureBlock(node);
 
   // add the value declaration to the new loop body
diff --git a/lib/6to5/transformation/transformers/minification/dead-code-elimination.js b/lib/6to5/transformation/transformers/minification/dead-code-elimination.js
index 6a7fdb8a57..f1f1a45fe6 100644
--- a/lib/6to5/transformation/transformers/minification/dead-code-elimination.js
+++ b/lib/6to5/transformation/transformers/minification/dead-code-elimination.js
@@ -3,7 +3,7 @@ var t = require("../../../types");
 exports.optional = true;
 
 exports.ExpressionStatement = function (node) {
-  // remove consequenceless expressions such as local variables and literals
+  // remove consequence-less expressions such as local variables and literals
   // note: will remove directives
   //
   //   var foo = true; foo; -> var foo = true;
@@ -34,7 +34,7 @@ exports.IfStatement = {
     //
 
     if (t.isLiteral(test) && test.value) {
-      return alternate;
+      return consequent;
     }
 
     // we can check if a test will be falsy 100% and if so we can inline the
diff --git a/lib/6to5/types/index.js b/lib/6to5/types/index.js
index 55da05b75b..b587d58147 100644
--- a/lib/6to5/types/index.js
+++ b/lib/6to5/types/index.js
@@ -403,7 +403,7 @@ t.toIdentifier = function (name) {
  * Description
  *
  * @param {Object} node
- * @param {String} key
+ * @param {String=} key
  */
 
 t.ensureBlock = function (node, key) {
@@ -418,7 +418,7 @@ t.ensureBlock = function (node, key) {
  * For example, given the match `React.createClass` it would match the
  * parsed nodes of `React.createClass` and `React["createClass"]`.
  *
- * @param {String} match Dot delimetered string
+ * @param {String} match Dot-delimited string
  * @param {Boolean} [allowPartial] Allow a partial match
  * @returns {Function}
  */