Index: lib/Format/TokenAnnotator.cpp
===================================================================
--- lib/Format/TokenAnnotator.cpp
+++ lib/Format/TokenAnnotator.cpp
@@ -1492,10 +1492,8 @@
     if (!PrevToken)
       return TT_UnaryOperator;
 
-    if (PrevToken->isOneOf(TT_CastRParen, TT_UnaryOperator) &&
-        !PrevToken->is(tok::exclaim))
-      // There aren't any trailing unary operators except for TypeScript's
-      // non-null operator (!). Thus, this must be squence of leading operators.
+    if (PrevToken->isOneOf(TT_CastRParen, TT_UnaryOperator))
+      // This must be a sequence of leading unary operators.
       return TT_UnaryOperator;
 
     // Use heuristics to recognize unary operators.
Index: unittests/Format/FormatTest.cpp
===================================================================
--- unittests/Format/FormatTest.cpp
+++ unittests/Format/FormatTest.cpp
@@ -5655,6 +5655,8 @@
   verifyFormat("(a->f())++;");
   verifyFormat("a[42]++;");
   verifyFormat("if (!(a->f())) {\n}");
+  verifyFormat("if (!+i) {\n}");
+  verifyFormat("~&a;");
 
   verifyFormat("a-- > b;");
   verifyFormat("b ? -a : c;");
Index: unittests/Format/FormatTestJS.cpp
===================================================================
--- unittests/Format/FormatTestJS.cpp
+++ unittests/Format/FormatTestJS.cpp
@@ -2132,6 +2132,7 @@
   verifyFormat("let x = foo!.bar();\n");
   verifyFormat("let x = foo ? bar! : baz;\n");
   verifyFormat("let x = !foo;\n");
+  verifyFormat("if (!+a) {\n}");
   verifyFormat("let x = foo[0]!;\n");
   verifyFormat("let x = (foo)!;\n");
   verifyFormat("let x = x(foo!);\n");