Double ESC for enter INSERT mode

[S1M0N38]

I like the keymap <esc><esc> to enter NORMAL mode in terminal-like buffers (e.g. like in snacks.terminal), so I'm using this keymap.

return {
  "folke/sidekick.nvim",
  dev = true,
  opts = {
    cli = {
      win = {
        keys = {
          stopinsert_esc = {
            "<esc>",
            function(self)
              self.esc_timer = self.esc_timer or vim.uv.new_timer()
              if self.esc_timer:is_active() then
                self.esc_timer:stop()
                vim.cmd.stopinsert()
              else
                self.esc_timer:start(200, 0, function() end)
                return "<esc>"
              end
            end,
            mode = "t",
            expr = true,
            desc = "enter normal mode",
          },
        },
      },
    },
  },
}

200ms should be a good fit. You can still hit ESC twice slower to activate the default behavior of the coding agent (e.g. checkpoint in Claude code / tree in Pi / ...).