Feathers: Deno Support?

Yes. The new @feathersjs/hooks is already Deno compatible with the rest of core to follow in v5 (Dove). To clarify, this applies only to

• Feathers core (@feathersjs/feathers)
• Authentication with JWT and local login
• A Deno transport for REST (and possibly Websockets)
• The feathers-memory database adapter

Any other Feathers plugins that rely on third party modules are likely not going to work until there is a Deno equivalent for those third party modules. This means the following things are likely not going to be available right away:

• Other database adapters (no Sequelize, Mongoose etc.)
• oAuth (for now)
• GraphQL, JSON schema etc.