Type is referenced from context where it's not visible

Author: minestarks

tests/cases/fourslash/extract-method24.ts

@@ -0,0 +1,30 @@
+/// <reference path='fourslash.ts' />
+
+//// function foo() {
+////     type T = {};
+////     let x: T = /*start*/{}/*end*/;
+//// }
+
+goTo.select('start', 'end')
+
+verify.refactorAvailable('Extract Method');
+
+edit.applyRefactor('Extract Method', "scope_1");
+
+verify.currentFileContentIs(`function foo() {
+    type T = {};
+    let x: T = newFunction();
+}
+function newFunction(): {} {
+    return {};
+}
+`);
+
+// Actual: "function·foo()·{↓
+// ····type·T·=·{};↓
+// ····let·x:·T·=·newFunction();↓
+// }¶↓
+// function·newFunction():·T·{¶↓
+// ····return·{};¶↓
+// }¶↓
+// "