Change Editor Keymap to vim (or emacs) at Preferences -> UI -> Editor Keymap Reload Boostnote after saving with “Command + R”.
You can customize your keymaps.
If you want to set
Esc, Go to “View -> Toggle Developer Tools” from the menu and after setting the tab to Console, Run the following script in the developer console.
CodeMirror.Vim.map (‘jj’, ‘<Esc>’, ‘insert’)
:q to escape from Edit mode.
When editing a note,
: q! commands let you leave edit mode.