clang-format: [JS] space between ! assert and in.

Summary:
Before:
    x = y!in z;
After:
    x = y! in z;

Reviewers: djasper

Subscribers: klimek

Differential Revision: https://reviews.llvm.org/D40433

llvm-svn: 318957

clang/lib/Format/TokenAnnotator.cpp

@@ -2433,8 +2433,9 @@ bool TokenAnnotator::spaceRequiredBefore(const AnnotatedLine &Line,
       return false;
     if (Right.is(TT_JsNonNullAssertion))
       return false;
-    if (Left.is(TT_JsNonNullAssertion) && Right.is(Keywords.kw_as))
-      return true; // "x! as string"
+    if (Left.is(TT_JsNonNullAssertion) &&
+        Right.isOneOf(Keywords.kw_as, Keywords.kw_in))
+      return true; // "x! as string", "x! in y"
   } else if (Style.Language == FormatStyle::LK_Java) {
     if (Left.is(tok::r_square) && Right.is(tok::l_brace))
       return true;

clang/unittests/Format/FormatTestJS.cpp

@@ -1908,6 +1908,7 @@ TEST_F(FormatTestJS, CastSyntax) {
   verifyFormat("x = x as {a: string};");
   verifyFormat("x = x as (string);");
   verifyFormat("x = x! as (string);");
+  verifyFormat("x = y! in z;");
   verifyFormat("var x = something.someFunction() as\n"
                "    something;",
                getGoogleJSStyleWithColumns(40));