Require parenthesis around "TSAsExpression" inside an "UpdateExpression" (#4183)

src/common/fast-path.js

@@ -320,6 +320,7 @@ FastPath.prototype.needsParens = function(options) {
         case "AwaitExpression":
         case "TSAsExpression":
         case "TSNonNullExpression":
+        case "UpdateExpression":
           return true;
 
         case "MemberExpression":

tests/typescript_as/__snapshots__/jsfmt.spec.js.snap

@@ -24,6 +24,7 @@ const state = JSON.stringify({
 } as State);
 
 (foo.bar as Baz) = [bar];
+(foo.bar as any)++;
 
 (bValue as boolean) ? 0 : -1;
 <boolean>bValue ? 0 : -1;
@@ -59,6 +60,7 @@ const state = JSON.stringify({
 } as State);
 
 (foo.bar as Baz) = [bar];
+(foo.bar as any)++;
 
 (bValue as boolean) ? 0 : -1;
 <boolean>bValue ? 0 : -1;

tests/typescript_as/as.js

@@ -21,6 +21,7 @@ const state = JSON.stringify({
 } as State);
 
 (foo.bar as Baz) = [bar];
+(foo.bar as any)++;
 
 (bValue as boolean) ? 0 : -1;
 <boolean>bValue ? 0 : -1;