clang-format: [JS] Prevent confusing TypeScript parameters wraps.

Before:
  aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaa, aaaaaaaaaaaaaaaa:
                     aaaaaaaaaaaaaaaaaa): aaaaaaaaaaaaaaaaaaaaaa {}

After:
  aaaaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaa,
                     aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaa):
      aaaaaaaaaaaaaaaaaaaaaa {}

llvm-svn: 241444

clang/lib/Format/ContinuationIndenter.cpp

@@ -628,7 +628,7 @@ unsigned ContinuationIndenter::getNewLineColumn(const LineState &State) {
     return State.Stack.back().Indent;
 
   if (NextNonComment->isOneOf(TT_StartOfName, TT_PointerOrReference) ||
-      Previous.isOneOf(tok::coloncolon, tok::equal))
+      Previous.isOneOf(tok::coloncolon, tok::equal, TT_JsTypeColon))
     return ContinuationIndent;
   if (PreviousNonComment && PreviousNonComment->is(tok::colon) &&
       PreviousNonComment->isOneOf(TT_ObjCMethodExpr, TT_DictLiteral))

clang/unittests/Format/FormatTestJS.cpp

@@ -885,6 +885,9 @@ TEST_F(FormatTestJS, TypeArguments) {
   verifyFormat("function f(): List<any> {}");
   verifyFormat("function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa():\n"
                "    bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {}");
+  verifyFormat("function aaaaaaaaaa(aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaa,\n"
+               "                    aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaa):\n"
+               "    aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa {}");
 }
 
 TEST_F(FormatTestJS, OptionalTypes) {