Make constructor use merged parent symbol

sandersn · sandersn · commit e964cb10ca56 · 2015-10-14T12:24:22.000-07:00
Previously in getSignatureFromDeclaration, it just used the parent symbol
without checking whether it was merged.
diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
@@ -3679,7 +3679,9 @@ namespace ts {
         function getSignatureFromDeclaration(declaration: SignatureDeclaration): Signature {
             let links = getNodeLinks(declaration);
             if (!links.resolvedSignature) {
-                let classType = declaration.kind === SyntaxKind.Constructor ? getDeclaredTypeOfClassOrInterface((<ClassDeclaration>declaration.parent).symbol) : undefined;
+                let classType = declaration.kind === SyntaxKind.Constructor ?
+                    getDeclaredTypeOfClassOrInterface(getMergedSymbol((<ClassDeclaration>declaration.parent).symbol))
+                    : undefined;
                 let typeParameters = classType ? classType.localTypeParameters :
                     declaration.typeParameters ? getTypeParametersFromDeclaration(declaration.typeParameters) : undefined;
                 let parameters: Symbol[] = [];
