JS: Format if statements with no else on a single line

lib/runtime/dart/_foreign_helper.js

 dart_library.library('dart/_foreign_helper', null, /* Imports */[
   "dart/_runtime",
   'dart/core'
 ], /* Lazy imports */[
 ], function(exports, dart, core) {
   'use strict';
   let dartx = dart.dartx;
   function JS(typeDescription, codeTemplate, arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11) {
-    if (arg0 === void 0)
-      arg0 = null;
-    if (arg1 === void 0)
-      arg1 = null;
-    if (arg2 === void 0)
-      arg2 = null;
-    if (arg3 === void 0)
-      arg3 = null;
-    if (arg4 === void 0)
-      arg4 = null;
-    if (arg5 === void 0)
-      arg5 = null;
-    if (arg6 === void 0)
-      arg6 = null;
-    if (arg7 === void 0)
-      arg7 = null;
-    if (arg8 === void 0)
-      arg8 = null;
-    if (arg9 === void 0)
-      arg9 = null;
-    if (arg10 === void 0)
-      arg10 = null;
-    if (arg11 === void 0)
-      arg11 = null;
+    if (arg0 === void 0) arg0 = null;
+    if (arg1 === void 0) arg1 = null;
+    if (arg2 === void 0) arg2 = null;
+    if (arg3 === void 0) arg3 = null;
+    if (arg4 === void 0) arg4 = null;
+    if (arg5 === void 0) arg5 = null;
+    if (arg6 === void 0) arg6 = null;
+    if (arg7 === void 0) arg7 = null;
+    if (arg8 === void 0) arg8 = null;
+    if (arg9 === void 0) arg9 = null;
+    if (arg10 === void 0) arg10 = null;
+    if (arg11 === void 0) arg11 = null;
   }
   dart.fn(JS, dart.dynamic, [core.String, core.String], [dart.dynamic, dart.dynamic, dart.dynamic, dart.dynamic, dart.dynamic, dart.dynamic, dart.dynamic, dart.dynamic, dart.dynamic, dart.dynamic, dart.dynamic, dart.dynamic]);
   function JS_CURRENT_ISOLATE_CONTEXT() {
   }
   dart.fn(JS_CURRENT_ISOLATE_CONTEXT, () => dart.definiteFunctionType(IsolateContext, []));
   class IsolateContext extends core.Object {}
   function JS_CALL_IN_ISOLATE(isolate, func) {
   }
   dart.fn(JS_CALL_IN_ISOLATE, dart.dynamic, [dart.dynamic, core.Function]);
   function JS_SET_CURRENT_ISOLATE(isolate) {
@@ skipping 102 matching lines @@
   exports.JS_FUNCTION_TYPE_REQUIRED_PARAMETERS_TAG = JS_FUNCTION_TYPE_REQUIRED_PARAMETERS_TAG;
   exports.JS_FUNCTION_TYPE_OPTIONAL_PARAMETERS_TAG = JS_FUNCTION_TYPE_OPTIONAL_PARAMETERS_TAG;
   exports.JS_FUNCTION_TYPE_NAMED_PARAMETERS_TAG = JS_FUNCTION_TYPE_NAMED_PARAMETERS_TAG;
   exports.JS_GET_NAME = JS_GET_NAME;
   exports.JS_EMBEDDED_GLOBAL = JS_EMBEDDED_GLOBAL;
   exports.JS_GET_FLAG = JS_GET_FLAG;
   exports.JS_EFFECT = JS_EFFECT;
   exports.JS_CONST = JS_CONST;
   exports.JS_STRING_CONCAT = JS_STRING_CONCAT;
 });