clang-format: [JS] Allow line breaks after TypeScript type colons.

llvm-svn: 241339
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
index b3e0f68..e6c12f4 100644
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -883,6 +883,8 @@
   verifyFormat("class C extends D<E> implements F<G>, H<I> {}");
   verifyFormat("function f(a: List<any> = null) {}");
   verifyFormat("function f(): List<any> {}");
+  verifyFormat("function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa():\n"
+               "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {}");
 }
 
 TEST_F(FormatTestJS, OptionalTypes) {