diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index c3f3cd61fa..b94af15f7e 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -11115,9 +11115,9 @@ module ts {
             return hasProperty(globals, name);
         }
 
-        function isUnknownIdentifier(location: Node, name: string): boolean {
-            Debug.assert(!nodeIsSynthesized(location), "isUnknownIdentifier called with a synthesized location");
-            return !resolveName(location, name, SymbolFlags.Value, /*nodeNotFoundMessage*/ undefined, /*nameArg*/ undefined);
+        function resolvesToSomeValue(location: Node, name: string): boolean {
+            Debug.assert(!nodeIsSynthesized(location), "resolvesToSomeValue called with a synthesized location");
+            return !!resolveName(location, name, SymbolFlags.Value, /*nodeNotFoundMessage*/ undefined, /*nameArg*/ undefined);
         }
 
         function getBlockScopedVariableId(n: Identifier): number {
@@ -11161,7 +11161,7 @@ module ts {
                 isSymbolAccessible,
                 isEntityNameVisible,
                 getConstantValue,
-                isUnknownIdentifier,
+                resolvesToSomeValue,
                 collectLinkedAliases,
                 getBlockScopedVariableId,
             };
diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index b60ae97cee..ad6c6d1c8b 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -88,10 +88,6 @@ module ts {
             return true;
         }
 
-        function isUnknownNameInEnclosingScope(name: string, location: Node): boolean {
-            return resolver.isUnknownIdentifier(location, name);
-        }
-
         function emitJavaScript(jsFilePath: string, root?: SourceFile) {
             let writer = createTextWriter(newLine);
             let write = writer.write;
@@ -254,7 +250,7 @@ module ts {
                 let tempName: string;
                 if (tempVariableKind !== TempVariableKind.auto && !(predefinedTempsInUse & tempVariableKind)) {
                     tempName = tempVariableKind === TempVariableKind._i ? "_i" : "_n";
-                    if (resolver.isUnknownIdentifier(location, tempName)) {
+                    if (!resolver.resolvesToSomeValue(location, tempName)) {
                         predefinedTempsInUse |= tempVariableKind;
                         return tempName;
                     }
@@ -273,8 +269,8 @@ module ts {
                     }
 
                     tempCount++;
-
-                } while (!resolver.isUnknownIdentifier(location, tempName));
+                }
+                while (resolver.resolvesToSomeValue(location, tempName));
 
                 return tempName;
             }
@@ -2817,7 +2813,7 @@ module ts {
                     : blockScopeContainer.parent;
 
                 var hasConflictsInEnclosingScope =
-                    !resolver.isUnknownIdentifier(parent, (<Identifier>node).text) ||
+                    resolver.resolvesToSomeValue(parent, (<Identifier>node).text) ||
                     nameConflictsWithSomeTempVariable((<Identifier>node).text);
 
                 if (hasConflictsInEnclosingScope) {
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index 12bf5efdb8..d2a63a349f 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -1219,7 +1219,7 @@ module ts {
         isEntityNameVisible(entityName: EntityName, enclosingDeclaration: Node): SymbolVisibilityResult;
         // Returns the constant value this property access resolves to, or 'undefined' for a non-constant
         getConstantValue(node: EnumMember | PropertyAccessExpression | ElementAccessExpression): number;
-        isUnknownIdentifier(location: Node, name: string): boolean;
+        resolvesToSomeValue(location: Node, name: string): boolean;
         getBlockScopedVariableId(node: Identifier): number;
     }
 
diff --git a/tests/baselines/reference/APISample_compile.js b/tests/baselines/reference/APISample_compile.js
index afe3f904de..cf634849b4 100644
--- a/tests/baselines/reference/APISample_compile.js
+++ b/tests/baselines/reference/APISample_compile.js
@@ -953,7 +953,7 @@ declare module "typescript" {
         isSymbolAccessible(symbol: Symbol, enclosingDeclaration: Node, meaning: SymbolFlags): SymbolAccessiblityResult;
         isEntityNameVisible(entityName: EntityName, enclosingDeclaration: Node): SymbolVisibilityResult;
         getConstantValue(node: EnumMember | PropertyAccessExpression | ElementAccessExpression): number;
-        isUnknownIdentifier(location: Node, name: string): boolean;
+        resolvesToSomeValue(location: Node, name: string): boolean;
         getBlockScopedVariableId(node: Identifier): number;
     }
     const enum SymbolFlags {
diff --git a/tests/baselines/reference/APISample_compile.types b/tests/baselines/reference/APISample_compile.types
index edc034c94b..17f393c406 100644
--- a/tests/baselines/reference/APISample_compile.types
+++ b/tests/baselines/reference/APISample_compile.types
@@ -3111,8 +3111,8 @@ declare module "typescript" {
 >PropertyAccessExpression : PropertyAccessExpression
 >ElementAccessExpression : ElementAccessExpression
 
-        isUnknownIdentifier(location: Node, name: string): boolean;

->isUnknownIdentifier : (location: Node, name: string) => boolean
+        resolvesToSomeValue(location: Node, name: string): boolean;

+>resolvesToSomeValue : (location: Node, name: string) => boolean
 >location : Node
 >Node : Node
 >name : string
diff --git a/tests/baselines/reference/APISample_linter.js b/tests/baselines/reference/APISample_linter.js
index a0eec95d0b..074db78fd6 100644
--- a/tests/baselines/reference/APISample_linter.js
+++ b/tests/baselines/reference/APISample_linter.js
@@ -984,7 +984,7 @@ declare module "typescript" {
         isSymbolAccessible(symbol: Symbol, enclosingDeclaration: Node, meaning: SymbolFlags): SymbolAccessiblityResult;
         isEntityNameVisible(entityName: EntityName, enclosingDeclaration: Node): SymbolVisibilityResult;
         getConstantValue(node: EnumMember | PropertyAccessExpression | ElementAccessExpression): number;
-        isUnknownIdentifier(location: Node, name: string): boolean;
+        resolvesToSomeValue(location: Node, name: string): boolean;
         getBlockScopedVariableId(node: Identifier): number;
     }
     const enum SymbolFlags {
diff --git a/tests/baselines/reference/APISample_linter.types b/tests/baselines/reference/APISample_linter.types
index c33694cb98..46b7c00ab3 100644
--- a/tests/baselines/reference/APISample_linter.types
+++ b/tests/baselines/reference/APISample_linter.types
@@ -3257,8 +3257,8 @@ declare module "typescript" {
 >PropertyAccessExpression : PropertyAccessExpression
 >ElementAccessExpression : ElementAccessExpression
 
-        isUnknownIdentifier(location: Node, name: string): boolean;

->isUnknownIdentifier : (location: Node, name: string) => boolean
+        resolvesToSomeValue(location: Node, name: string): boolean;

+>resolvesToSomeValue : (location: Node, name: string) => boolean
 >location : Node
 >Node : Node
 >name : string
diff --git a/tests/baselines/reference/APISample_transform.js b/tests/baselines/reference/APISample_transform.js
index 16b88ab753..ade38f4d1f 100644
--- a/tests/baselines/reference/APISample_transform.js
+++ b/tests/baselines/reference/APISample_transform.js
@@ -985,7 +985,7 @@ declare module "typescript" {
         isSymbolAccessible(symbol: Symbol, enclosingDeclaration: Node, meaning: SymbolFlags): SymbolAccessiblityResult;
         isEntityNameVisible(entityName: EntityName, enclosingDeclaration: Node): SymbolVisibilityResult;
         getConstantValue(node: EnumMember | PropertyAccessExpression | ElementAccessExpression): number;
-        isUnknownIdentifier(location: Node, name: string): boolean;
+        resolvesToSomeValue(location: Node, name: string): boolean;
         getBlockScopedVariableId(node: Identifier): number;
     }
     const enum SymbolFlags {
diff --git a/tests/baselines/reference/APISample_transform.types b/tests/baselines/reference/APISample_transform.types
index 659c52118b..d1a8e5bff0 100644
--- a/tests/baselines/reference/APISample_transform.types
+++ b/tests/baselines/reference/APISample_transform.types
@@ -3207,8 +3207,8 @@ declare module "typescript" {
 >PropertyAccessExpression : PropertyAccessExpression
 >ElementAccessExpression : ElementAccessExpression
 
-        isUnknownIdentifier(location: Node, name: string): boolean;

->isUnknownIdentifier : (location: Node, name: string) => boolean
+        resolvesToSomeValue(location: Node, name: string): boolean;

+>resolvesToSomeValue : (location: Node, name: string) => boolean
 >location : Node
 >Node : Node
 >name : string
diff --git a/tests/baselines/reference/APISample_watcher.js b/tests/baselines/reference/APISample_watcher.js
index e2c2e13bf8..1b1951af2a 100644
--- a/tests/baselines/reference/APISample_watcher.js
+++ b/tests/baselines/reference/APISample_watcher.js
@@ -1022,7 +1022,7 @@ declare module "typescript" {
         isSymbolAccessible(symbol: Symbol, enclosingDeclaration: Node, meaning: SymbolFlags): SymbolAccessiblityResult;
         isEntityNameVisible(entityName: EntityName, enclosingDeclaration: Node): SymbolVisibilityResult;
         getConstantValue(node: EnumMember | PropertyAccessExpression | ElementAccessExpression): number;
-        isUnknownIdentifier(location: Node, name: string): boolean;
+        resolvesToSomeValue(location: Node, name: string): boolean;
         getBlockScopedVariableId(node: Identifier): number;
     }
     const enum SymbolFlags {
diff --git a/tests/baselines/reference/APISample_watcher.types b/tests/baselines/reference/APISample_watcher.types
index 742408410c..88a4614e2a 100644
--- a/tests/baselines/reference/APISample_watcher.types
+++ b/tests/baselines/reference/APISample_watcher.types
@@ -3380,8 +3380,8 @@ declare module "typescript" {
 >PropertyAccessExpression : PropertyAccessExpression
 >ElementAccessExpression : ElementAccessExpression
 
-        isUnknownIdentifier(location: Node, name: string): boolean;

->isUnknownIdentifier : (location: Node, name: string) => boolean
+        resolvesToSomeValue(location: Node, name: string): boolean;

+>resolvesToSomeValue : (location: Node, name: string) => boolean
 >location : Node
 >Node : Node
 >name : string