Hi,
If you are a student looking for summer work, this might interest you:
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The PSDE project aims to develop an Emacs-based JavaScript programming and debugging tool for AJAX-based RIAs. The implementation will provide an unobtrusive client-side script that can be loaded alongside any JavaScript web application, and an Emacs interface (REPL) that will enable debugging of remote and mobile clients, including the possibility of no-reload drop-in for live user sessions.
Along with an interactive prompt/REPL, PSDE will provide a profiler, tracing and logging facilities, a DOM inspector, a completion and documentation system for DOM symbols, and other useful web programming tools, both by using the reflective capabilities of JavaScript, and by providing hooks (a la Open Implementation) into the Parenscr