Improve parsing errors related to related to destructuring bind

test/cctest/test-parsing.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 6431 matching lines @@
         "a <<< a",
         "a >>> a",
         "function a() {}",
         "a`bcd`",
         "this",
         "null",
         "true",
         "false",
         "1",
         "'abc'",
+        "/abc/",
+        "`abc`",
         "class {}",
         "{+2 : x}",
         "{-2 : x}",
         "var",
         "[var]",
         "{x : {y : var}}",
         "{x : x = a+}",
         "{x : x = (a+)}",
         "{x : x += a}",
         "{m() {} = 0}",
         "{[1+1]}",
         "[...rest, x]",
         "[a,b,...rest, x]",
         "[a,,...rest, x]",
         "[...rest,]",
         "[a,b,...rest,]",
         "[a,,...rest,]",
         "[...rest,...rest1]",
         "[a,b,...rest,...rest1]",
         "[a,,..rest,...rest1]",
+        "{ x : 3 }",
+        "{ x : 'foo' }",
+        "{ x : /foo/ }",
+        "{ x : `foo` }",
         NULL};
     // clang-format on
     RunParserSyncTest(context_data, data, kError, NULL, 0, always_flags,
                       arraysize(always_flags));
   }
 
   {  // All modes.
     const char* context_data[][2] = {{"'use strict'; let ", " = {};"},
                                      {"var ", " = {};"},
                                      {"'use strict'; const ", " = {};"},
@@ skipping 350 matching lines @@
     "for (let x in {}) {}",
     "for (let x of []) {}",
     NULL
   };
   // clang-format on
 
   static const ParserFlag always_flags[] = {kAllowHarmonySloppy};
   RunParserSyncTest(context_data, data, kSuccess, NULL, 0, always_flags,
                     arraysize(always_flags));
 }