Since we can decode objects we need to have a way to encode them into JavaScript objects as well. The encode expression is the way to do that:
encode { name = "Bob" } /* Object */
encode variable /* Object */
The encode expression tries to encode a typed object into a JavaScript object (Object type in Mint), in case that it's impossible to do that you will get a nice error message.
The general rule is that you can encode everything which can be decodeed.
Encoding data is useful when you want to convert it to Json:
encode { name = "Bob" }
|> Json.stringify()
/* { "name": "Bob"} */