Protected constructors now accessible everywhere in subclasses

src/compiler/checker.ts

@@ -11544,18 +11544,15 @@ namespace ts {
             const declaringClassDeclaration = <ClassLikeDeclaration>getClassLikeDeclarationOfSymbol(declaration.parent.symbol);
             const declaringClass = <InterfaceType>getDeclaredTypeOfSymbol(declaration.parent.symbol);
 
-            // A private or protected constructor can only be instantiated within its own class or a static method of a subclass
+            // A private or protected constructor can only be instantiated within its own class (or a subclass, for protected)
             if (!isNodeWithinClass(node, declaringClassDeclaration)) {
-                const containingFunction = getContainingFunction(node);
                 const containingClass = getContainingClass(node);
                 if (containingClass) {
                     const containingType = getTypeOfNode(containingClass);
                     const baseTypes = getBaseTypes(<InterfaceType>containingType);
                     if (baseTypes.length) {
                         const baseType = baseTypes[0];
-                        if (containingFunction &&
-                            containingFunction.flags & NodeFlags.Static &&
-                            flags & NodeFlags.Protected &&
+                        if (flags & NodeFlags.Protected &&
                             baseType.symbol === declaration.parent.symbol) {
                             return true;
                         }

tests/baselines/reference/classConstructorAccessibility2.errors.txt

@@ -1,12 +1,11 @@
-tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessibility2.ts(28,28): error TS2674: Constructor of class 'BaseB' is protected and only accessible within the class declaration.
 tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessibility2.ts(32,24): error TS2675: Cannot extend a class 'BaseC'. Class constructor is marked as private.
 tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessibility2.ts(35,28): error TS2673: Constructor of class 'BaseC' is private and only accessible within the class declaration.
 tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessibility2.ts(36,35): error TS2673: Constructor of class 'BaseC' is private and only accessible within the class declaration.
 tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessibility2.ts(40,10): error TS2674: Constructor of class 'BaseB' is protected and only accessible within the class declaration.
 tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessibility2.ts(41,10): error TS2673: Constructor of class 'BaseC' is private and only accessible within the class declaration.
 
 
-==== tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessibility2.ts (6 errors) ====
+==== tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessibility2.ts (5 errors) ====
 
     class BaseA {
         public constructor(public x: number) { }
@@ -34,9 +33,7 @@ tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessib
     class DerivedB extends BaseB {
         constructor(public x: number) { super(x); }
         createInstance() { new DerivedB(7); }
-        createBaseInstance() { new BaseB(8); } // error
-                               ~~~~~~~~~~~~
-!!! error TS2674: Constructor of class 'BaseB' is protected and only accessible within the class declaration.
+        createBaseInstance() { new BaseB(8); } // ok
         static staticBaseInstance() { new BaseB(9); } // ok
     }
 

tests/baselines/reference/classConstructorAccessibility2.js

@@ -26,7 +26,7 @@ class DerivedA extends BaseA {
 class DerivedB extends BaseB {
     constructor(public x: number) { super(x); }
     createInstance() { new DerivedB(7); }
-    createBaseInstance() { new BaseB(8); } // error
+    createBaseInstance() { new BaseB(8); } // ok
     static staticBaseInstance() { new BaseB(9); } // ok
 }
 
@@ -92,7 +92,7 @@ var DerivedB = (function (_super) {
         this.x = x;
     }
     DerivedB.prototype.createInstance = function () { new DerivedB(7); };
-    DerivedB.prototype.createBaseInstance = function () { new BaseB(8); }; // error
+    DerivedB.prototype.createBaseInstance = function () { new BaseB(8); }; // ok
     DerivedB.staticBaseInstance = function () { new BaseB(9); }; // ok
     return DerivedB;
 }(BaseB));

tests/cases/conformance/classes/constructorDeclarations/classConstructorAccessibility2.ts

@@ -26,7 +26,7 @@ class DerivedA extends BaseA {
 class DerivedB extends BaseB {
     constructor(public x: number) { super(x); }
     createInstance() { new DerivedB(7); }
-    createBaseInstance() { new BaseB(8); } // error
+    createBaseInstance() { new BaseB(8); } // ok
     static staticBaseInstance() { new BaseB(9); } // ok
 }