It is indeed a performance penalty, but is required to avoid conflicts with built-in properties (such as __proto__). For modern browsers we could probably use Map nowadays.
You should bring this to gwt-contrib! -- You received this message because you are subscribed to the Google Groups "GWT Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/d/optout.
