uv.uv_prepare_t

`uv_prepare_t` - Prepare handle

[uv_handle_t][] functions also apply.

Prepare handles will run the given callback once per loop iteration, right before polling for I/O.

local prepare = uv.new_prepare()
prepare:start(function()
  print("Before I/O polling")
end)

function uv_prepare_t.start(callback: fun() -> nil) -> (success 0 | nil, err nil | string, err_name uv.error_name | nil)

Start the handle with the given callback.

function uv_prepare_t.stop() -> (success 0 | nil, err nil | string, err_name uv.error_name | nil)

Stop the handle, the callback will no longer be called.