diff --git a/internal/transformers/tstransforms/typeeraser.go b/internal/transformers/tstransforms/typeeraser.go
index f2aadbed97..99c70a8f39 100644
--- a/internal/transformers/tstransforms/typeeraser.go
+++ b/internal/transformers/tstransforms/typeeraser.go
@@ -121,7 +121,7 @@ func (tx *TypeEraserTransformer) visit(node *ast.Node) *ast.Node {
 		return tx.Factory().UpdateExpressionWithTypeArguments(n, tx.Visitor().VisitNode(n.Expression), nil)
 
 	case ast.KindPropertyDeclaration:
-		if ast.HasSyntacticModifier(node, ast.ModifierFlagsAmbient) {
+		if ast.HasSyntacticModifier(node, ast.ModifierFlagsAmbient|ast.ModifierFlagsAbstract) {
 			// TypeScript `declare` fields are elided
 			return nil
 		}
diff --git a/testdata/baselines/reference/submodule/compiler/abstractPropertyBasics.js b/testdata/baselines/reference/submodule/compiler/abstractPropertyBasics.js
index 880775b115..078acc69b8 100644
--- a/testdata/baselines/reference/submodule/compiler/abstractPropertyBasics.js
+++ b/testdata/baselines/reference/submodule/compiler/abstractPropertyBasics.js
@@ -25,9 +25,6 @@ class C extends B {
 
 //// [abstractPropertyBasics.js]
 class B {
-    prop;
-    raw;
-    ro;
 }
 class C extends B {
     get prop() { return "foo"; }
diff --git a/testdata/baselines/reference/submodule/compiler/abstractPropertyBasics.js.diff b/testdata/baselines/reference/submodule/compiler/abstractPropertyBasics.js.diff
index d87f347912..d9c3141acd 100644
--- a/testdata/baselines/reference/submodule/compiler/abstractPropertyBasics.js.diff
+++ b/testdata/baselines/reference/submodule/compiler/abstractPropertyBasics.js.diff
@@ -1,12 +1,7 @@
 --- old.abstractPropertyBasics.js
 +++ new.abstractPropertyBasics.js
-@@= skipped -24, +24 lines =@@
-
- //// [abstractPropertyBasics.js]
+@@= skipped -26, +26 lines =@@
  class B {
-+    prop;
-+    raw;
-+    ro;
  }
  class C extends B {
 -    constructor() {
diff --git a/testdata/baselines/reference/submodule/compiler/abstractPropertyInConstructor.js b/testdata/baselines/reference/submodule/compiler/abstractPropertyInConstructor.js
index f9fb98e23f..eee21c3894 100644
--- a/testdata/baselines/reference/submodule/compiler/abstractPropertyInConstructor.js
+++ b/testdata/baselines/reference/submodule/compiler/abstractPropertyInConstructor.js
@@ -111,8 +111,6 @@ class AbstractClass {
         // OK, references are to another instance
         other.cb(other.prop);
     }
-    prop;
-    cb;
     other = this.prop;
     fn = () => this.prop;
     method2() {
@@ -151,8 +149,6 @@ class User {
     }
 }
 class C1 {
-    x;
-    y;
     constructor() {
         let self = this; // ok
         let { x, y: y1 } = this; // error
diff --git a/testdata/baselines/reference/submodule/compiler/abstractPropertyInConstructor.js.diff b/testdata/baselines/reference/submodule/compiler/abstractPropertyInConstructor.js.diff
index 16fbbd728c..88ce203aa3 100644
--- a/testdata/baselines/reference/submodule/compiler/abstractPropertyInConstructor.js.diff
+++ b/testdata/baselines/reference/submodule/compiler/abstractPropertyInConstructor.js.diff
@@ -13,8 +13,6 @@
          // OK, references are to another instance
          other.cb(other.prop);
      }
-+    prop;
-+    cb;
 +    other = this.prop;
 +    fn = () => this.prop;
      method2() {
@@ -29,7 +27,7 @@
          // there is no implementation of 'prop' in any base class
          this.cb(this.prop.toLowerCase());
          this.method(1);
-@@= skipped -17, +21 lines =@@
+@@= skipped -17, +19 lines =@@
      }
  }
  class Implementation extends DerivedAbstractClass {
@@ -42,16 +40,7 @@
          this.cb(this.prop);
      }
      method(n) {
-@@= skipped -19, +19 lines =@@
-     }
- }
- class C1 {
-+    x;
-+    y;
-     constructor() {
-         let self = this; // ok
-         let { x, y: y1 } = this; // error
-@@= skipped -7, +9 lines =@@
+@@= skipped -26, +26 lines =@@
      }
  }
  class C2 {
diff --git a/testdata/baselines/reference/submodule/compiler/abstractPropertyNegative.js b/testdata/baselines/reference/submodule/compiler/abstractPropertyNegative.js
index 7f7c99c4d6..e6256c968f 100644
--- a/testdata/baselines/reference/submodule/compiler/abstractPropertyNegative.js
+++ b/testdata/baselines/reference/submodule/compiler/abstractPropertyNegative.js
@@ -47,17 +47,13 @@ abstract class AbstractAccessorMismatch {
 
 //// [abstractPropertyNegative.js]
 class B {
-    prop;
-    ro;
 }
 class C extends B {
     ro = "readonly please";
-    notAllowed;
 }
 let c = new C();
 c.ro = "error: lhs of assignment can't be readonly";
 class WrongTypeProperty {
-    num;
 }
 class WrongTypePropertyImpl extends WrongTypeProperty {
     num = "nope, wrong";
diff --git a/testdata/baselines/reference/submodule/compiler/abstractPropertyNegative.js.diff b/testdata/baselines/reference/submodule/compiler/abstractPropertyNegative.js.diff
index d8883c1c17..2bacb101ee 100644
--- a/testdata/baselines/reference/submodule/compiler/abstractPropertyNegative.js.diff
+++ b/testdata/baselines/reference/submodule/compiler/abstractPropertyNegative.js.diff
@@ -1,11 +1,7 @@
 --- old.abstractPropertyNegative.js
 +++ new.abstractPropertyNegative.js
-@@= skipped -46, +46 lines =@@
-
- //// [abstractPropertyNegative.js]
+@@= skipped -48, +48 lines =@@
  class B {
-+    prop;
-+    ro;
  }
  class C extends B {
 -    constructor() {
@@ -14,12 +10,10 @@
 -    }
 -    get concreteWithNoBody() { }
 +    ro = "readonly please";
-+    notAllowed;
  }
  let c = new C();
  c.ro = "error: lhs of assignment can't be readonly";
  class WrongTypeProperty {
-+    num;
  }
  class WrongTypePropertyImpl extends WrongTypeProperty {
 -    constructor() {
@@ -30,7 +24,7 @@
  }
  class WrongTypeAccessor {
  }
-@@= skipped -24, +21 lines =@@
+@@= skipped -22, +15 lines =@@
      get num() { return "nope, wrong"; }
  }
  class WrongTypeAccessorImpl2 extends WrongTypeAccessor {
diff --git a/testdata/baselines/reference/submodule/conformance/abstractProperty(target=es2015).js b/testdata/baselines/reference/submodule/conformance/abstractProperty(target=es2015).js
index 848850c92f..1d6a28b40d 100644
--- a/testdata/baselines/reference/submodule/conformance/abstractProperty(target=es2015).js
+++ b/testdata/baselines/reference/submodule/conformance/abstractProperty(target=es2015).js
@@ -19,7 +19,6 @@ class C extends A {
 
 //// [abstractProperty.js]
 class A {
-    x;
     foo() {
         console.log(this.x);
     }
diff --git a/testdata/baselines/reference/submodule/conformance/abstractProperty(target=es2015).js.diff b/testdata/baselines/reference/submodule/conformance/abstractProperty(target=es2015).js.diff
index d601a45f7a..617baa9e98 100644
--- a/testdata/baselines/reference/submodule/conformance/abstractProperty(target=es2015).js.diff
+++ b/testdata/baselines/reference/submodule/conformance/abstractProperty(target=es2015).js.diff
@@ -1,12 +1,6 @@
 --- old.abstractProperty(target=es2015).js
 +++ new.abstractProperty(target=es2015).js
-@@= skipped -18, +18 lines =@@
-
- //// [abstractProperty.js]
- class A {
-+    x;
-     foo() {
-         console.log(this.x);
+@@= skipped -23, +23 lines =@@
      }
  }
  class B extends A {
diff --git a/testdata/baselines/reference/submodule/conformance/abstractProperty(target=esnext).js b/testdata/baselines/reference/submodule/conformance/abstractProperty(target=esnext).js
index 848850c92f..1d6a28b40d 100644
--- a/testdata/baselines/reference/submodule/conformance/abstractProperty(target=esnext).js
+++ b/testdata/baselines/reference/submodule/conformance/abstractProperty(target=esnext).js
@@ -19,7 +19,6 @@ class C extends A {
 
 //// [abstractProperty.js]
 class A {
-    x;
     foo() {
         console.log(this.x);
     }
diff --git a/testdata/baselines/reference/submodule/conformance/abstractProperty(target=esnext).js.diff b/testdata/baselines/reference/submodule/conformance/abstractProperty(target=esnext).js.diff
deleted file mode 100644
index 9c549e77e4..0000000000
--- a/testdata/baselines/reference/submodule/conformance/abstractProperty(target=esnext).js.diff
+++ /dev/null
@@ -1,10 +0,0 @@
---- old.abstractProperty(target=esnext).js
-+++ new.abstractProperty(target=esnext).js
-@@= skipped -18, +18 lines =@@
-
- //// [abstractProperty.js]
- class A {
-+    x;
-     foo() {
-         console.log(this.x);
-     }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/abstractPropertyInitializer.js b/testdata/baselines/reference/submodule/conformance/abstractPropertyInitializer.js
index 01abfd25ba..2ed500cb34 100644
--- a/testdata/baselines/reference/submodule/conformance/abstractPropertyInitializer.js
+++ b/testdata/baselines/reference/submodule/conformance/abstractPropertyInitializer.js
@@ -8,7 +8,6 @@ abstract class C {
 
 //// [abstractPropertyInitializer.js]
 class C {
-    prop = 1;
 }
 
 
diff --git a/testdata/baselines/reference/submodule/conformance/abstractPropertyInitializer.js.diff b/testdata/baselines/reference/submodule/conformance/abstractPropertyInitializer.js.diff
index c98e7e6258..c267c64054 100644
--- a/testdata/baselines/reference/submodule/conformance/abstractPropertyInitializer.js.diff
+++ b/testdata/baselines/reference/submodule/conformance/abstractPropertyInitializer.js.diff
@@ -6,6 +6,4 @@
  //// [abstractPropertyInitializer.js]
 -"use strict";
  class C {
-+    prop = 1;
  }
-
diff --git a/testdata/baselines/reference/submodule/conformance/accessorsOverrideProperty7.js b/testdata/baselines/reference/submodule/conformance/accessorsOverrideProperty7.js
index 254ed56f44..2fa70d0f2b 100644
--- a/testdata/baselines/reference/submodule/conformance/accessorsOverrideProperty7.js
+++ b/testdata/baselines/reference/submodule/conformance/accessorsOverrideProperty7.js
@@ -11,7 +11,6 @@ class B extends A {
 
 //// [accessorsOverrideProperty7.js]
 class A {
-    p = 'yep';
 }
 class B extends A {
     get p() { return 'oh no'; } // error
diff --git a/testdata/baselines/reference/submodule/conformance/accessorsOverrideProperty7.js.diff b/testdata/baselines/reference/submodule/conformance/accessorsOverrideProperty7.js.diff
deleted file mode 100644
index c26763caeb..0000000000
--- a/testdata/baselines/reference/submodule/conformance/accessorsOverrideProperty7.js.diff
+++ /dev/null
@@ -1,10 +0,0 @@
---- old.accessorsOverrideProperty7.js
-+++ new.accessorsOverrideProperty7.js
-@@= skipped -10, +10 lines =@@
-
- //// [accessorsOverrideProperty7.js]
- class A {
-+    p = 'yep';
- }
- class B extends A {
-     get p() { return 'oh no'; } // error
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=false).js b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=false).js
index d1716ea073..4c3fccb2dc 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=false).js
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=false).js
@@ -16,7 +16,6 @@ class C3 extends C1 {
 
 //// [autoAccessor7.js]
 class C1 {
-    accessor a;
 }
 class C2 extends C1 {
     accessor a = 1;
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=false).js.diff b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=false).js.diff
index bce2f5aedc..8b94f2a770 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=false).js.diff
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=false).js.diff
@@ -17,7 +17,6 @@
 -};
 -var _C2_a_accessor_storage;
  class C1 {
-+    accessor a;
  }
  class C2 extends C1 {
 -    constructor() {
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=true).js b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=true).js
index d1716ea073..4c3fccb2dc 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=true).js
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=true).js
@@ -16,7 +16,6 @@ class C3 extends C1 {
 
 //// [autoAccessor7.js]
 class C1 {
-    accessor a;
 }
 class C2 extends C1 {
     accessor a = 1;
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=true).js.diff b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=true).js.diff
index 17f94f2783..624afe0ede 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=true).js.diff
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2015,usedefineforclassfields=true).js.diff
@@ -17,7 +17,6 @@
 -};
 -var _C2_a_accessor_storage;
  class C1 {
-+    accessor a;
  }
  class C2 extends C1 {
 -    constructor() {
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=false).js b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=false).js
index d1716ea073..4c3fccb2dc 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=false).js
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=false).js
@@ -16,7 +16,6 @@ class C3 extends C1 {
 
 //// [autoAccessor7.js]
 class C1 {
-    accessor a;
 }
 class C2 extends C1 {
     accessor a = 1;
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=false).js.diff b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=false).js.diff
index dce0067feb..ec7e23eff4 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=false).js.diff
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=false).js.diff
@@ -1,10 +1,7 @@
 --- old.autoAccessor7(target=es2022,usedefineforclassfields=false).js
 +++ new.autoAccessor7(target=es2022,usedefineforclassfields=false).js
-@@= skipped -15, +15 lines =@@
-
- //// [autoAccessor7.js]
+@@= skipped -17, +17 lines =@@
  class C1 {
-+    accessor a;
  }
  class C2 extends C1 {
 -    #a_accessor_storage = 1;
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=true).js b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=true).js
index d1716ea073..4c3fccb2dc 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=true).js
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=true).js
@@ -16,7 +16,6 @@ class C3 extends C1 {
 
 //// [autoAccessor7.js]
 class C1 {
-    accessor a;
 }
 class C2 extends C1 {
     accessor a = 1;
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=true).js.diff b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=true).js.diff
index 78b58b51fb..c6055ce12d 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=true).js.diff
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=es2022,usedefineforclassfields=true).js.diff
@@ -1,10 +1,7 @@
 --- old.autoAccessor7(target=es2022,usedefineforclassfields=true).js
 +++ new.autoAccessor7(target=es2022,usedefineforclassfields=true).js
-@@= skipped -15, +15 lines =@@
-
- //// [autoAccessor7.js]
+@@= skipped -17, +17 lines =@@
  class C1 {
-+    accessor a;
  }
  class C2 extends C1 {
 -    #a_accessor_storage = 1;
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=false).js b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=false).js
index d1716ea073..4c3fccb2dc 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=false).js
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=false).js
@@ -16,7 +16,6 @@ class C3 extends C1 {
 
 //// [autoAccessor7.js]
 class C1 {
-    accessor a;
 }
 class C2 extends C1 {
     accessor a = 1;
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=false).js.diff b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=false).js.diff
deleted file mode 100644
index 083b8ac06f..0000000000
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=false).js.diff
+++ /dev/null
@@ -1,10 +0,0 @@
---- old.autoAccessor7(target=esnext,usedefineforclassfields=false).js
-+++ new.autoAccessor7(target=esnext,usedefineforclassfields=false).js
-@@= skipped -15, +15 lines =@@
-
- //// [autoAccessor7.js]
- class C1 {
-+    accessor a;
- }
- class C2 extends C1 {
-     accessor a = 1;
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=true).js b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=true).js
index d1716ea073..4c3fccb2dc 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=true).js
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=true).js
@@ -16,7 +16,6 @@ class C3 extends C1 {
 
 //// [autoAccessor7.js]
 class C1 {
-    accessor a;
 }
 class C2 extends C1 {
     accessor a = 1;
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=true).js.diff b/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=true).js.diff
deleted file mode 100644
index 744286f6b6..0000000000
--- a/testdata/baselines/reference/submodule/conformance/autoAccessor7(target=esnext,usedefineforclassfields=true).js.diff
+++ /dev/null
@@ -1,10 +0,0 @@
---- old.autoAccessor7(target=esnext,usedefineforclassfields=true).js
-+++ new.autoAccessor7(target=esnext,usedefineforclassfields=true).js
-@@= skipped -15, +15 lines =@@
-
- //// [autoAccessor7.js]
- class C1 {
-+    accessor a;
- }
- class C2 extends C1 {
-     accessor a = 1;
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessorAllowedModifiers.js b/testdata/baselines/reference/submodule/conformance/autoAccessorAllowedModifiers.js
index babe203fd7..204bdf2b5d 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessorAllowedModifiers.js
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessorAllowedModifiers.js
@@ -35,7 +35,6 @@ class C1 {
     accessor b;
     accessor c;
     accessor d;
-    accessor e;
     static accessor f;
     static accessor g;
     static accessor h;
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessorAllowedModifiers.js.diff b/testdata/baselines/reference/submodule/conformance/autoAccessorAllowedModifiers.js.diff
deleted file mode 100644
index 450f25b100..0000000000
--- a/testdata/baselines/reference/submodule/conformance/autoAccessorAllowedModifiers.js.diff
+++ /dev/null
@@ -1,10 +0,0 @@
---- old.autoAccessorAllowedModifiers.js
-+++ new.autoAccessorAllowedModifiers.js
-@@= skipped -34, +34 lines =@@
-     accessor b;
-     accessor c;
-     accessor d;
-+    accessor e;
-     static accessor f;
-     static accessor g;
-     static accessor h;
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=es2017).js b/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=es2017).js
index b59a68bc50..03af83bb70 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=es2017).js
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=es2017).js
@@ -48,7 +48,6 @@ class C1 {
     accessor d;
     accessor e;
     accessor f;
-    accessor g;
     accessor static h;
     accessor i() { }
     accessor get j() { return false; }
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=es2017).js.diff b/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=es2017).js.diff
index 36e51a2595..02cc6b6adb 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=es2017).js.diff
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=es2017).js.diff
@@ -50,7 +50,6 @@
 +    accessor d;
 +    accessor e;
 +    accessor f;
-+    accessor g;
 +    accessor static h;
 +    accessor i() { }
 +    accessor get j() { return false; }
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=esnext).js b/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=esnext).js
index b59a68bc50..03af83bb70 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=esnext).js
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=esnext).js
@@ -48,7 +48,6 @@ class C1 {
     accessor d;
     accessor e;
     accessor f;
-    accessor g;
     accessor static h;
     accessor i() { }
     accessor get j() { return false; }
diff --git a/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=esnext).js.diff b/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=esnext).js.diff
index 218d7aa39f..ccef992cb4 100644
--- a/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=esnext).js.diff
+++ b/testdata/baselines/reference/submodule/conformance/autoAccessorDisallowedModifiers(target=esnext).js.diff
@@ -1,11 +1,6 @@
 --- old.autoAccessorDisallowedModifiers(target=esnext).js
 +++ new.autoAccessorDisallowedModifiers(target=esnext).js
-@@= skipped -47, +47 lines =@@
-     accessor d;
-     accessor e;
-     accessor f;
-+    accessor g;
-     accessor static h;
+@@= skipped -51, +51 lines =@@
      accessor i() { }
      accessor get j() { return false; }
      accessor set k(v) { }
@@ -14,7 +9,7 @@
      accessor l;
      accessor m;
  }
-@@= skipped -13, +14 lines =@@
+@@= skipped -9, +9 lines =@@
  }
  accessor class C3 {
  }
diff --git a/testdata/baselines/reference/submodule/conformance/classAbstractProperties.js b/testdata/baselines/reference/submodule/conformance/classAbstractProperties.js
index cdb325ba84..cd4d0f226c 100644
--- a/testdata/baselines/reference/submodule/conformance/classAbstractProperties.js
+++ b/testdata/baselines/reference/submodule/conformance/classAbstractProperties.js
@@ -17,9 +17,4 @@ abstract class A {
 
 //// [classAbstractProperties.js]
 class A {
-    x;
-    y;
-    z;
-    w;
-    m;
 }
diff --git a/testdata/baselines/reference/submodule/conformance/classAbstractProperties.js.diff b/testdata/baselines/reference/submodule/conformance/classAbstractProperties.js.diff
deleted file mode 100644
index ab826475ec..0000000000
--- a/testdata/baselines/reference/submodule/conformance/classAbstractProperties.js.diff
+++ /dev/null
@@ -1,12 +0,0 @@
---- old.classAbstractProperties.js
-+++ new.classAbstractProperties.js
-@@= skipped -16, +16 lines =@@
-
- //// [classAbstractProperties.js]
- class A {
-+    x;
-+    y;
-+    z;
-+    w;
-+    m;
- }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/definiteAssignmentAssertions.js b/testdata/baselines/reference/submodule/conformance/definiteAssignmentAssertions.js
index 331d479b45..7f1a25fb57 100644
--- a/testdata/baselines/reference/submodule/conformance/definiteAssignmentAssertions.js
+++ b/testdata/baselines/reference/submodule/conformance/definiteAssignmentAssertions.js
@@ -106,7 +106,6 @@ class C3 {
 }
 // Definite assignment assertion not permitted on abstract property
 class C5 {
-    a;
 }
 // Suppress definite assignment check for variable
 function f1() {
diff --git a/testdata/baselines/reference/submodule/conformance/definiteAssignmentAssertions.js.diff b/testdata/baselines/reference/submodule/conformance/definiteAssignmentAssertions.js.diff
index 1ca19fc1b5..2f481af877 100644
--- a/testdata/baselines/reference/submodule/conformance/definiteAssignmentAssertions.js.diff
+++ b/testdata/baselines/reference/submodule/conformance/definiteAssignmentAssertions.js.diff
@@ -29,8 +29,4 @@
 +    d;
  }
  // Definite assignment assertion not permitted on abstract property
- class C5 {
-+    a;
- }
- // Suppress definite assignment check for variable
- function f1() {
\ No newline at end of file
+ class C5 {
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/derivedUninitializedPropertyDeclaration.js b/testdata/baselines/reference/submodule/conformance/derivedUninitializedPropertyDeclaration.js
index 8c4d952864..f86244748d 100644
--- a/testdata/baselines/reference/submodule/conformance/derivedUninitializedPropertyDeclaration.js
+++ b/testdata/baselines/reference/submodule/conformance/derivedUninitializedPropertyDeclaration.js
@@ -120,7 +120,6 @@ class G extends E {
     }
 }
 class H extends E {
-    p1;
 }
 class J {
     r = 5;
diff --git a/testdata/baselines/reference/submodule/conformance/derivedUninitializedPropertyDeclaration.js.diff b/testdata/baselines/reference/submodule/conformance/derivedUninitializedPropertyDeclaration.js.diff
index 53c95d13df..fdbdf977aa 100644
--- a/testdata/baselines/reference/submodule/conformance/derivedUninitializedPropertyDeclaration.js.diff
+++ b/testdata/baselines/reference/submodule/conformance/derivedUninitializedPropertyDeclaration.js.diff
@@ -36,10 +36,8 @@
      constructor() {
          super();
          this.p1 = 'z';
-     }
- }
+@@= skipped -16, +20 lines =@@
  class H extends E {
-+    p1;
  }
  class J {
 -    constructor() {
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js
index 9b34805d2f..1d9f5e1797 100644
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js
+++ b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js
@@ -15,10 +15,4 @@ abstract class C {
 //// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
 const field3 = "field3";
 class C {
-    @dec(1)
-    field1;
-    @dec(2)
-    ["field2"];
-    @dec(3)
-    [field3];
 }
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js.diff b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js.diff
deleted file mode 100644
index 227d98ef9a..0000000000
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js.diff
+++ /dev/null
@@ -1,13 +0,0 @@
---- old.esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js
-+++ new.esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2015).js
-@@= skipped -14, +14 lines =@@
- //// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
- const field3 = "field3";
- class C {
-+    @dec(1)
-+    field1;
-+    @dec(2)
-+    ["field2"];
-+    @dec(3)
-+    [field3];
- }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js
index 9b34805d2f..1d9f5e1797 100644
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js
+++ b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js
@@ -15,10 +15,4 @@ abstract class C {
 //// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
 const field3 = "field3";
 class C {
-    @dec(1)
-    field1;
-    @dec(2)
-    ["field2"];
-    @dec(3)
-    [field3];
 }
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js.diff b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js.diff
deleted file mode 100644
index 423068cc79..0000000000
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js.diff
+++ /dev/null
@@ -1,13 +0,0 @@
---- old.esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js
-+++ new.esDecorators-classDeclaration-fields-nonStaticAbstract(target=es2022).js
-@@= skipped -14, +14 lines =@@
- //// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
- const field3 = "field3";
- class C {
-+    @dec(1)
-+    field1;
-+    @dec(2)
-+    ["field2"];
-+    @dec(3)
-+    [field3];
- }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js
index 9b34805d2f..1d9f5e1797 100644
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js
+++ b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js
@@ -15,10 +15,4 @@ abstract class C {
 //// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
 const field3 = "field3";
 class C {
-    @dec(1)
-    field1;
-    @dec(2)
-    ["field2"];
-    @dec(3)
-    [field3];
 }
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js.diff b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js.diff
deleted file mode 100644
index 3696c5d00d..0000000000
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js.diff
+++ /dev/null
@@ -1,13 +0,0 @@
---- old.esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js
-+++ new.esDecorators-classDeclaration-fields-nonStaticAbstract(target=es5).js
-@@= skipped -14, +14 lines =@@
- //// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
- const field3 = "field3";
- class C {
-+    @dec(1)
-+    field1;
-+    @dec(2)
-+    ["field2"];
-+    @dec(3)
-+    [field3];
- }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js
index 9b34805d2f..1d9f5e1797 100644
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js
+++ b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js
@@ -15,10 +15,4 @@ abstract class C {
 //// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
 const field3 = "field3";
 class C {
-    @dec(1)
-    field1;
-    @dec(2)
-    ["field2"];
-    @dec(3)
-    [field3];
 }
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js.diff b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js.diff
deleted file mode 100644
index 31bb7d6645..0000000000
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js.diff
+++ /dev/null
@@ -1,13 +0,0 @@
---- old.esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js
-+++ new.esDecorators-classDeclaration-fields-nonStaticAbstract(target=esnext).js
-@@= skipped -14, +14 lines =@@
- //// [esDecorators-classDeclaration-fields-nonStaticAbstract.js]
- const field3 = "field3";
- class C {
-+    @dec(1)
-+    field1;
-+    @dec(2)
-+    ["field2"];
-+    @dec(3)
-+    [field3];
- }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js
index fcf6098021..7dd5d6b96a 100644
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js
+++ b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js
@@ -15,10 +15,4 @@ abstract class C {
 //// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.js]
 const field3 = "field3";
 class C {
-    @dec(1)
-    accessor field1;
-    @dec(2)
-    accessor ["field2"];
-    @dec(3)
-    accessor [field3];
 }
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js.diff b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js.diff
deleted file mode 100644
index ebed4a6ff3..0000000000
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js.diff
+++ /dev/null
@@ -1,13 +0,0 @@
---- old.esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js
-+++ new.esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2015).js
-@@= skipped -14, +14 lines =@@
- //// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.js]
- const field3 = "field3";
- class C {
-+    @dec(1)
-+    accessor field1;
-+    @dec(2)
-+    accessor ["field2"];
-+    @dec(3)
-+    accessor [field3];
- }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js
index fcf6098021..7dd5d6b96a 100644
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js
+++ b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js
@@ -15,10 +15,4 @@ abstract class C {
 //// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.js]
 const field3 = "field3";
 class C {
-    @dec(1)
-    accessor field1;
-    @dec(2)
-    accessor ["field2"];
-    @dec(3)
-    accessor [field3];
 }
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js.diff b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js.diff
deleted file mode 100644
index e891e1b186..0000000000
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js.diff
+++ /dev/null
@@ -1,13 +0,0 @@
---- old.esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js
-+++ new.esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=es2022).js
-@@= skipped -14, +14 lines =@@
- //// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.js]
- const field3 = "field3";
- class C {
-+    @dec(1)
-+    accessor field1;
-+    @dec(2)
-+    accessor ["field2"];
-+    @dec(3)
-+    accessor [field3];
- }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js
index fcf6098021..7dd5d6b96a 100644
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js
+++ b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js
@@ -15,10 +15,4 @@ abstract class C {
 //// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.js]
 const field3 = "field3";
 class C {
-    @dec(1)
-    accessor field1;
-    @dec(2)
-    accessor ["field2"];
-    @dec(3)
-    accessor [field3];
 }
diff --git a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js.diff b/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js.diff
deleted file mode 100644
index 292710902b..0000000000
--- a/testdata/baselines/reference/submodule/conformance/esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js.diff
+++ /dev/null
@@ -1,13 +0,0 @@
---- old.esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js
-+++ new.esDecorators-classDeclaration-fields-nonStaticAbstractAccessor(target=esnext).js
-@@= skipped -14, +14 lines =@@
- //// [esDecorators-classDeclaration-fields-nonStaticAbstractAccessor.js]
- const field3 = "field3";
- class C {
-+    @dec(1)
-+    accessor field1;
-+    @dec(2)
-+    accessor ["field2"];
-+    @dec(3)
-+    accessor [field3];
- }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/mergedInheritedMembersSatisfyAbstractBase.js b/testdata/baselines/reference/submodule/conformance/mergedInheritedMembersSatisfyAbstractBase.js
index 56a241c9d1..75d5df8d5e 100644
--- a/testdata/baselines/reference/submodule/conformance/mergedInheritedMembersSatisfyAbstractBase.js
+++ b/testdata/baselines/reference/submodule/conformance/mergedInheritedMembersSatisfyAbstractBase.js
@@ -24,7 +24,6 @@ interface IncorrectlyExtends extends IncorrectGetters {}
 
 //// [mergedInheritedMembersSatisfyAbstractBase.js]
 class BaseClass {
-    bar;
 }
 class Broken extends BaseClass {
 }
diff --git a/testdata/baselines/reference/submodule/conformance/mergedInheritedMembersSatisfyAbstractBase.js.diff b/testdata/baselines/reference/submodule/conformance/mergedInheritedMembersSatisfyAbstractBase.js.diff
deleted file mode 100644
index ec230135ef..0000000000
--- a/testdata/baselines/reference/submodule/conformance/mergedInheritedMembersSatisfyAbstractBase.js.diff
+++ /dev/null
@@ -1,10 +0,0 @@
---- old.mergedInheritedMembersSatisfyAbstractBase.js
-+++ new.mergedInheritedMembersSatisfyAbstractBase.js
-@@= skipped -23, +23 lines =@@
-
- //// [mergedInheritedMembersSatisfyAbstractBase.js]
- class BaseClass {
-+    bar;
- }
- class Broken extends BaseClass {
- }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/privateNamesIncompatibleModifiers.js b/testdata/baselines/reference/submodule/conformance/privateNamesIncompatibleModifiers.js
index a3f08edf1c..cbeec3f862 100644
--- a/testdata/baselines/reference/submodule/conformance/privateNamesIncompatibleModifiers.js
+++ b/testdata/baselines/reference/submodule/conformance/privateNamesIncompatibleModifiers.js
@@ -61,5 +61,4 @@ class A {
     async set #asyncProp(value) { } // Error
 }
 class B {
-    #quux = 3; // Error
 }
diff --git a/testdata/baselines/reference/submodule/conformance/privateNamesIncompatibleModifiers.js.diff b/testdata/baselines/reference/submodule/conformance/privateNamesIncompatibleModifiers.js.diff
index bbf37dba5b..dd16b17b5c 100644
--- a/testdata/baselines/reference/submodule/conformance/privateNamesIncompatibleModifiers.js.diff
+++ b/testdata/baselines/reference/submodule/conformance/privateNamesIncompatibleModifiers.js.diff
@@ -66,5 +66,4 @@
 -    return __awaiter(this, void 0, void 0, function* () { });
 -};
  class B {
-+    #quux = 3; // Error
  }
\ No newline at end of file
diff --git a/testdata/baselines/reference/submodule/conformance/strictPropertyInitialization.js b/testdata/baselines/reference/submodule/conformance/strictPropertyInitialization.js
index 6d50015503..1646430cbc 100644
--- a/testdata/baselines/reference/submodule/conformance/strictPropertyInitialization.js
+++ b/testdata/baselines/reference/submodule/conformance/strictPropertyInitialization.js
@@ -232,10 +232,6 @@ class C8 {
 }
 // No strict initialization checks for abstract members
 class C9 {
-    a;
-    b;
-    c;
-    d;
 }
 // Properties with non-undefined types must be assigned before they can be accessed
 // within their constructor
diff --git a/testdata/baselines/reference/submodule/conformance/strictPropertyInitialization.js.diff b/testdata/baselines/reference/submodule/conformance/strictPropertyInitialization.js.diff
index 2050975f6d..0dc4bc7f0f 100644
--- a/testdata/baselines/reference/submodule/conformance/strictPropertyInitialization.js.diff
+++ b/testdata/baselines/reference/submodule/conformance/strictPropertyInitialization.js.diff
@@ -112,11 +112,7 @@
  }
  // No strict initialization checks for abstract members
  class C9 {
-+    a;
-+    b;
-+    c;
-+    d;
- }
+@@= skipped -81, +73 lines =@@
  // Properties with non-undefined types must be assigned before they can be accessed
  // within their constructor
  class C10 {
@@ -157,7 +153,7 @@
      constructor() {
          this[a] = 1;
          this[b] = 1;
-@@= skipped -115, +116 lines =@@
+@@= skipped -34, +39 lines =@@
      E["B"] = "B";
  })(E || (E = {}));
  class C13 {