Print out Function (Debug Redux State and Actions without Redux Dev Tools)

I am doing some research into how Slack uses Redux. I am running custom Javascript on the page using the Chrome extension CJS.

I log the action and state changes. When the action is a function I can't log the function correctly.

Here is an excerpt from the console log:

...
[AP] store dispatch called: function d(e,n){return t(e,n,r)}
[AP] teamStore dispatch called: {"type":"[21] Navigate to a route","payload":{"routeName":"ROUTE_ENTITY","params":{"teamId":"TS6QSK7PA","entityId":"DU52E70NB"}},"error":false}
...

The code where I print the function is:

console.log("[AP] store dispatch called: " + (JSON.stringify(action) || action.toString()));

Here is full code code:

const teamStates = [];
const states = [];
let base;
let teamStore;
let store;

function subscribeToStores() {
    const reactRoot = document.getElementsByClassName('p-client_container')[0];
    try {
        base = reactRoot._reactRootContainer._internalRoot.current
    } catch (e) {
        console.log('[AP] Could not find React Root');   
    }

    if (!base) {
        setTimeout(() => {
            subscribeToStores();
        }, 1);
    } else {
        console.log('[AP] Found React Root');
        while (!store) {
            try {
                store = base.pendingProps.store;
            } catch (e) {}
            base = base.child
        }
        console.log('[AP] Found store');
        console.log(JSON.stringify(store.getState()));
        states.push(store.getState());


        while (!teamStore) {
            try {
                teamStore = base.pendingProps.teamStore;
            } catch (e) {}
            base = base.child
        }
        console.log('[AP] Found teamStore');
        console.log(JSON.stringify(teamStore.getState()));
        teamStates.push(teamStore.getState());

        var unsubscribe1 = teamStore.subscribe(() => {
            teamStates.push(teamStore.getState());
            console.log("[AP] teamStates length:" + teamStates.length);
            console.log(JSON.stringify(teamStore.getState()));
        })

        var rawDispatchTeamStore = teamStore.dispatch;
        teamStore.dispatch = (action) => {
            console.log("[AP] teamStore dispatch called: " + (JSON.stringify(action) || action.toString()));
            rawDispatchTeamStore(action);
        }

        var unsubscribe2 = store.subscribe(() => {
            states.push(store.getState());
            console.log("[AP] states length:" + states.length);
            console.log(JSON.stringify(store.getState()));
        })

        var rawDispatchStore = store.dispatch;
        store.dispatch = (action) => {
            console.log("[AP] store dispatch called: " + (JSON.stringify(action) || action.toString()));
            rawDispatchStore(action);
        }

    }
}

subscribeToStores();