Merge pull request #19046 from Microsoft/fix15395

Fix emit for classes with both fields and 'extends null'

tests/baselines/reference/classExtendingNull.js

@@ -1,7 +1,8 @@
 //// [classExtendingNull.ts]
 class C1 extends null { }
 class C2 extends (null) { }
-
+class C3 extends null { x = 1; }
+class C4 extends (null) { x = 1; }
 
 //// [classExtendingNull.js]
 var __extends = (this && this.__extends) || (function () {
@@ -26,3 +27,17 @@ var C2 = /** @class */ (function (_super) {
     }
     return C2;
 }((null)));
+var C3 = /** @class */ (function (_super) {
+    __extends(C3, _super);
+    function C3() {
+        this.x = 1;
+    }
+    return C3;
+}(null));
+var C4 = /** @class */ (function (_super) {
+    __extends(C4, _super);
+    function C4() {
+        this.x = 1;
+    }
+    return C4;
+}((null)));

tests/baselines/reference/classExtendingNull.symbols

@@ -5,3 +5,11 @@ class C1 extends null { }
 class C2 extends (null) { }
 >C2 : Symbol(C2, Decl(classExtendingNull.ts, 0, 25))
 
+class C3 extends null { x = 1; }
+>C3 : Symbol(C3, Decl(classExtendingNull.ts, 1, 27))
+>x : Symbol(C3.x, Decl(classExtendingNull.ts, 2, 23))
+
+class C4 extends (null) { x = 1; }
+>C4 : Symbol(C4, Decl(classExtendingNull.ts, 2, 32))
+>x : Symbol(C4.x, Decl(classExtendingNull.ts, 3, 25))
+

tests/baselines/reference/classExtendingNull.types

@@ -8,3 +8,16 @@ class C2 extends (null) { }
 >(null) : null
 >null : null
 
+class C3 extends null { x = 1; }
+>C3 : C3
+>null : null
+>x : number
+>1 : 1
+
+class C4 extends (null) { x = 1; }
+>C4 : C4
+>(null) : null
+>null : null
+>x : number
+>1 : 1
+

tests/cases/conformance/classes/classDeclarations/classExtendingNull.ts

@@ -1,2 +1,4 @@
 class C1 extends null { }
 class C2 extends (null) { }
+class C3 extends null { x = 1; }
+class C4 extends (null) { x = 1; }