LibJS: Lex single quote strings, escaped chars and unterminated strings

Author: https://github.com/sunverwerth
Commit: c0e6234219
Pull-request: https://github.com/SerenityOS/serenity/pull/1451

Libraries/LibJS/Token.cpp

@@ -186,6 +186,8 @@ const char* Token::name(TokenType type)
         return "UnsignedShiftRight";
     case TokenType::UnsignedShiftRightEquals:
         return "UnsignedShiftRightEquals";
+    case TokenType::UnterminatedStringLiteral:
+        return "UnterminatedStringLiteral";
     case TokenType::Var:
         return "Var";
     case TokenType::Void: