mapping jk to esc

This one is pretty simple. This is normally done on Duat's native Insert mode, but you could replace that with any other Insert mode, provided you got the plugin for one:

#![allow(unused)]
fn main() {
use duat::prelude::*;
setup_duat!(setup);

fn setup() {
    map::<Insert>("jk", "<Esc>");
}
}

This won't print anything to the screen while you're typing, making it seem like the j key has a bit of delay. If you wish to print 'j' to the screen, use this:

#![allow(unused)]
fn main() {
use duat::prelude::*;
setup_duat!(setup);

fn setup() {
    map::<Insert>("jk", "<Esc>");
}
}

Additionally, if you want to write to the file on jk as well, you can do this:

#![allow(unused)]
fn main() {
use duat::prelude::*;
setup_duat!(setup);

fn setup() {
    map::<Insert>("jk", "<Esc>:w<Enter>");
}
}

If you want to, you can also have this behavioron the PromptLine, i.e., while writing commands and searches:

#![allow(unused)]
fn main() {
use duat::prelude::*;
setup_duat!(setup);

fn setup() {
    map::<Prompt>("jk", "<Esc>");
}
}