diff --git a/tests/baselines/reference/checkJsFiles.errors.txt b/tests/baselines/reference/checkJsFiles.errors.txt
index 8371e101dd1..41344dc384a 100644
--- a/tests/baselines/reference/checkJsFiles.errors.txt
+++ b/tests/baselines/reference/checkJsFiles.errors.txt
@@ -1,10 +1,6 @@
-error TS5055: Cannot write file 'tests/cases/compiler/a.js' because it would overwrite input file.
-  Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 tests/cases/compiler/a.js(3,1): error TS2322: Type '0' is not assignable to type 'string'.
 
 
-!!! error TS5055: Cannot write file 'tests/cases/compiler/a.js' because it would overwrite input file.
-!!! error TS5055:   Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 ==== tests/cases/compiler/a.js (1 errors) ====
     
     var x = "string";
diff --git a/tests/baselines/reference/checkJsFiles2.errors.txt b/tests/baselines/reference/checkJsFiles2.errors.txt
index 566ba3786b8..5c1a211a646 100644
--- a/tests/baselines/reference/checkJsFiles2.errors.txt
+++ b/tests/baselines/reference/checkJsFiles2.errors.txt
@@ -1,10 +1,6 @@
-error TS5055: Cannot write file 'tests/cases/compiler/a.js' because it would overwrite input file.
-  Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 tests/cases/compiler/a.js(4,1): error TS2322: Type '0' is not assignable to type 'string'.
 
 
-!!! error TS5055: Cannot write file 'tests/cases/compiler/a.js' because it would overwrite input file.
-!!! error TS5055:   Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 ==== tests/cases/compiler/a.js (1 errors) ====
     
     // @check
diff --git a/tests/baselines/reference/checkJsFiles3.errors.txt b/tests/baselines/reference/checkJsFiles3.errors.txt
index 566ba3786b8..5c1a211a646 100644
--- a/tests/baselines/reference/checkJsFiles3.errors.txt
+++ b/tests/baselines/reference/checkJsFiles3.errors.txt
@@ -1,10 +1,6 @@
-error TS5055: Cannot write file 'tests/cases/compiler/a.js' because it would overwrite input file.
-  Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 tests/cases/compiler/a.js(4,1): error TS2322: Type '0' is not assignable to type 'string'.
 
 
-!!! error TS5055: Cannot write file 'tests/cases/compiler/a.js' because it would overwrite input file.
-!!! error TS5055:   Adding a tsconfig.json file will help organize projects that contain both TypeScript and JavaScript files. Learn more at https://aka.ms/tsconfig.
 ==== tests/cases/compiler/a.js (1 errors) ====
     
     // @check
diff --git a/tests/cases/compiler/checkJsFiles.ts b/tests/cases/compiler/checkJsFiles.ts
index c36673b0239..0f196539737 100644
--- a/tests/cases/compiler/checkJsFiles.ts
+++ b/tests/cases/compiler/checkJsFiles.ts
@@ -1,5 +1,6 @@
 // @allowJs: true
 // @checkJsFiles: true
+// @noEmit: true
 
 // @fileName: a.js
 var x = "string";
diff --git a/tests/cases/compiler/checkJsFiles2.ts b/tests/cases/compiler/checkJsFiles2.ts
index fe8978666b0..e18eecb0393 100644
--- a/tests/cases/compiler/checkJsFiles2.ts
+++ b/tests/cases/compiler/checkJsFiles2.ts
@@ -1,5 +1,6 @@
 // @allowJs: true
 // @checkJsFiles: false
+// @noEmit: true
 
 // @fileName: a.js
 // @check
diff --git a/tests/cases/compiler/checkJsFiles3.ts b/tests/cases/compiler/checkJsFiles3.ts
index 964f909bc6f..a0a9a152fee 100644
--- a/tests/cases/compiler/checkJsFiles3.ts
+++ b/tests/cases/compiler/checkJsFiles3.ts
@@ -1,4 +1,5 @@
 // @allowJs: true
+// @noEmit: true
 
 // @fileName: a.js
 // @check