diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index a2fde2c576872..c43591911abd4 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -1558,9 +1558,9 @@ module ts {
         target?: ScriptTarget;
         version?: boolean;
         watch?: boolean;
-        stripInternal?: boolean;
-        preserveNewLines?: boolean;
-        cacheDownlevelForOfLength?: boolean;
+        /* @internal */ stripInternal?: boolean;
+        /* @internal */ preserveNewLines?: boolean;
+        /* @internal */ cacheDownlevelForOfLength?: boolean;
         [option: string]: string | number | boolean;
     }
 
diff --git a/tests/baselines/reference/APISample_compile.js b/tests/baselines/reference/APISample_compile.js
index 8560d2136418b..985718231810c 100644
--- a/tests/baselines/reference/APISample_compile.js
+++ b/tests/baselines/reference/APISample_compile.js
@@ -1237,9 +1237,6 @@ declare module "typescript" {
         target?: ScriptTarget;
         version?: boolean;
         watch?: boolean;
-        stripInternal?: boolean;
-        preserveNewLines?: boolean;
-        cacheDownlevelForOfLength?: boolean;
         [option: string]: string | number | boolean;
     }
     const enum ModuleKind {
diff --git a/tests/baselines/reference/APISample_compile.types b/tests/baselines/reference/APISample_compile.types
index 018e48c30babd..087c0389d0fce 100644
--- a/tests/baselines/reference/APISample_compile.types
+++ b/tests/baselines/reference/APISample_compile.types
@@ -3947,15 +3947,6 @@ declare module "typescript" {
         watch?: boolean;

 >watch : boolean
 
-        stripInternal?: boolean;

->stripInternal : boolean
-
-        preserveNewLines?: boolean;

->preserveNewLines : boolean
-
-        cacheDownlevelForOfLength?: boolean;

->cacheDownlevelForOfLength : boolean
-
         [option: string]: string | number | boolean;

 >option : string
     }

diff --git a/tests/baselines/reference/APISample_linter.js b/tests/baselines/reference/APISample_linter.js
index 623467846191b..d43d622007210 100644
--- a/tests/baselines/reference/APISample_linter.js
+++ b/tests/baselines/reference/APISample_linter.js
@@ -1268,9 +1268,6 @@ declare module "typescript" {
         target?: ScriptTarget;
         version?: boolean;
         watch?: boolean;
-        stripInternal?: boolean;
-        preserveNewLines?: boolean;
-        cacheDownlevelForOfLength?: boolean;
         [option: string]: string | number | boolean;
     }
     const enum ModuleKind {
diff --git a/tests/baselines/reference/APISample_linter.types b/tests/baselines/reference/APISample_linter.types
index 442c8a6ca0691..14eb2936242bd 100644
--- a/tests/baselines/reference/APISample_linter.types
+++ b/tests/baselines/reference/APISample_linter.types
@@ -4093,15 +4093,6 @@ declare module "typescript" {
         watch?: boolean;

 >watch : boolean
 
-        stripInternal?: boolean;

->stripInternal : boolean
-
-        preserveNewLines?: boolean;

->preserveNewLines : boolean
-
-        cacheDownlevelForOfLength?: boolean;

->cacheDownlevelForOfLength : boolean
-
         [option: string]: string | number | boolean;

 >option : string
     }

diff --git a/tests/baselines/reference/APISample_transform.js b/tests/baselines/reference/APISample_transform.js
index 5c913a4d13d06..bfe62135a0db3 100644
--- a/tests/baselines/reference/APISample_transform.js
+++ b/tests/baselines/reference/APISample_transform.js
@@ -1269,9 +1269,6 @@ declare module "typescript" {
         target?: ScriptTarget;
         version?: boolean;
         watch?: boolean;
-        stripInternal?: boolean;
-        preserveNewLines?: boolean;
-        cacheDownlevelForOfLength?: boolean;
         [option: string]: string | number | boolean;
     }
     const enum ModuleKind {
diff --git a/tests/baselines/reference/APISample_transform.types b/tests/baselines/reference/APISample_transform.types
index 3673a5472a786..baa497c95fa50 100644
--- a/tests/baselines/reference/APISample_transform.types
+++ b/tests/baselines/reference/APISample_transform.types
@@ -4043,15 +4043,6 @@ declare module "typescript" {
         watch?: boolean;

 >watch : boolean
 
-        stripInternal?: boolean;

->stripInternal : boolean
-
-        preserveNewLines?: boolean;

->preserveNewLines : boolean
-
-        cacheDownlevelForOfLength?: boolean;

->cacheDownlevelForOfLength : boolean
-
         [option: string]: string | number | boolean;

 >option : string
     }

diff --git a/tests/baselines/reference/APISample_watcher.js b/tests/baselines/reference/APISample_watcher.js
index 0983fedbaff33..ee1fd06251576 100644
--- a/tests/baselines/reference/APISample_watcher.js
+++ b/tests/baselines/reference/APISample_watcher.js
@@ -1306,9 +1306,6 @@ declare module "typescript" {
         target?: ScriptTarget;
         version?: boolean;
         watch?: boolean;
-        stripInternal?: boolean;
-        preserveNewLines?: boolean;
-        cacheDownlevelForOfLength?: boolean;
         [option: string]: string | number | boolean;
     }
     const enum ModuleKind {
diff --git a/tests/baselines/reference/APISample_watcher.types b/tests/baselines/reference/APISample_watcher.types
index c4211de6ce622..a8b534439d546 100644
--- a/tests/baselines/reference/APISample_watcher.types
+++ b/tests/baselines/reference/APISample_watcher.types
@@ -4216,15 +4216,6 @@ declare module "typescript" {
         watch?: boolean;

 >watch : boolean
 
-        stripInternal?: boolean;

->stripInternal : boolean
-
-        preserveNewLines?: boolean;

->preserveNewLines : boolean
-
-        cacheDownlevelForOfLength?: boolean;

->cacheDownlevelForOfLength : boolean
-
         [option: string]: string | number | boolean;

 >option : string
     }