Eclipse Wild Web Developer provides a rich development experience for Web development in Eclipse IDE, including editing assistance, debugging and other features that ease development of web applications.
Eclipse Wild Web Developer relies on existing mainstream and maintained components to provide the language smartness, over popular configuration files like TextMate and protocols like Language Server Protocol or Debug Adapter Protocol; and may rely on some valuable pieces of Eclipse WebTools.
But Eclipse Wild Web Developer is not meant to be a project where we (re)implement parsers or debuggers; it's only focused on integrating existing components. Any work that deals with plain language or debugger logic should be excluded from Wild Web Developer and directed to the underlying components used by Wild Web Developer.
As such, Eclipse Wild Web Developer won't host specific language server or TextMate grammars and will only consume those artifacts produced by other projects.