diff --git a/tests/baselines/reference/checkJsdocTypeTag1.types b/tests/baselines/reference/checkJsdocTypeTag1.types
index ad8a365d687..a0c0c53cfeb 100644
--- a/tests/baselines/reference/checkJsdocTypeTag1.types
+++ b/tests/baselines/reference/checkJsdocTypeTag1.types
@@ -91,12 +91,12 @@ x2(0);
  */
 var props = {};
 >props : any
->{} : { [x: string]: any; }
+>{} : {}
 
 /**
  * @type {Object}
  */
 var props = {};
 >props : any
->{} : { [x: string]: any; }
+>{} : {}
 
diff --git a/tests/baselines/reference/moduleExportAlias.types b/tests/baselines/reference/moduleExportAlias.types
index 189c8c0f401..b1eedf8c2ab 100644
--- a/tests/baselines/reference/moduleExportAlias.types
+++ b/tests/baselines/reference/moduleExportAlias.types
@@ -206,19 +206,19 @@ multipleDeclarationAlias4.func8 = function () { };
 >function () { } : () => void
 
 var multipleDeclarationAlias5 = module.exports = exports = {};
->multipleDeclarationAlias5 : { [x: string]: any; }
->module.exports = exports = {} : { [x: string]: any; }
+>multipleDeclarationAlias5 : {}
+>module.exports = exports = {} : {}
 >module.exports : any
 >module : any
 >exports : any
->exports = {} : { [x: string]: any; }
+>exports = {} : {}
 >exports : any
->{} : { [x: string]: any; }
+>{} : {}
 
 multipleDeclarationAlias5.func9 = function () { };
 >multipleDeclarationAlias5.func9 = function () { } : () => void
 >multipleDeclarationAlias5.func9 : any
->multipleDeclarationAlias5 : { [x: string]: any; }
+>multipleDeclarationAlias5 : {}
 >func9 : any
 >function () { } : () => void
 
@@ -240,15 +240,15 @@ multipleDeclarationAlias6.func10 = function () { };
 >function () { } : () => void
 
 exports = module.exports = someOtherVariable = {};
->exports = module.exports = someOtherVariable = {} : { [x: string]: any; }
+>exports = module.exports = someOtherVariable = {} : {}
 >exports : any
->module.exports = someOtherVariable = {} : { [x: string]: any; }
+>module.exports = someOtherVariable = {} : {}
 >module.exports : any
 >module : any
 >exports : any
->someOtherVariable = {} : { [x: string]: any; }
+>someOtherVariable = {} : {}
 >someOtherVariable : any
->{} : { [x: string]: any; }
+>{} : {}
 
 exports.func11 = function () { };
 >exports.func11 = function () { } : () => void
@@ -267,15 +267,15 @@ module.exports.func12 = function () { };
 >function () { } : () => void
 
 exports = module.exports = someOtherVariable = {};
->exports = module.exports = someOtherVariable = {} : { [x: string]: any; }
+>exports = module.exports = someOtherVariable = {} : {}
 >exports : any
->module.exports = someOtherVariable = {} : { [x: string]: any; }
+>module.exports = someOtherVariable = {} : {}
 >module.exports : any
 >module : any
 >exports : any
->someOtherVariable = {} : { [x: string]: any; }
+>someOtherVariable = {} : {}
 >someOtherVariable : any
->{} : { [x: string]: any; }
+>{} : {}
 
 exports.func11 = function () { };
 >exports.func11 = function () { } : () => void
@@ -344,13 +344,13 @@ module.exports.func16 = function () { };
 >function () { } : () => void
 
 module.exports = exports = {};
->module.exports = exports = {} : { [x: string]: any; }
+>module.exports = exports = {} : {}
 >module.exports : any
 >module : any
 >exports : any
->exports = {} : { [x: string]: any; }
+>exports = {} : {}
 >exports : any
->{} : { [x: string]: any; }
+>{} : {}
 
 exports.func17 = function () { };
 >exports.func17 = function () { } : () => void
diff --git a/tests/cases/fourslash/codeFixUndeclaredAcrossFiles1.ts b/tests/cases/fourslash/codeFixUndeclaredAcrossFiles1.ts
index 29dcc2a5048..b7bca4e0712 100644
--- a/tests/cases/fourslash/codeFixUndeclaredAcrossFiles1.ts
+++ b/tests/cases/fourslash/codeFixUndeclaredAcrossFiles1.ts
@@ -23,7 +23,7 @@ verify.getAndApplyCodeFix(/*errorCode*/undefined, 0);
 verify.getAndApplyCodeFix(/*errorCode*/undefined, 0);
 
 verify.rangeIs(`
-    y: { [x: string]: any; };
+    y: {};
     m1(): any {
         throw new Error("Method not implemented.");
     }