Welcome to TC39's focal communication hub.

Discuss existing ECMAScript proposals.

New ideas, proposals looking for a champion, and proposal mentoring. Get feedback on your new ideas here: what’s been done, where to find prior art, the polish your proposal needs to be considered by the committee.

Specifying a language is a complex affair, filled with confusing language and sometimes bewildering processes. It’s okay not to understand, and we encourage you to ask questions!

Discussion about this site, its organization, how it works, and how we can improve it.

Seeking out empirical data regarding how developers learn and use language features and syntax.