I'm playing around learning XState and wanted to include an action in a machine that would just log the current state to console.

Defining a simple example machine like so, how would I go about this? Also note the questions in the comments in the code.

import { createMachine, interpret } from "xstate"

const sm = createMachine({
    initial: 'foo',
    states: {
        foo: {
            entry: 'logState', // Can I only reference an action by string?
                               // Or can I add arguments here somehow?
            on: {
                TOGGLE: {target: 'bar'}
            }
        },
        bar: {
            entry: 'logState',
            on: {
                TOGGLE: {target: 'foo'}
            }
        }
    }
},
{
    actions: {
        logState(/* What arguments can go here? */) => {
            // What do I do here?
        }
    }
});

I know that actions are called with context and event as arguments but I don't see a way to get the current state from either of those. Am I missing something here?