Rewatch on return/visibility, delay start until watch is called.

import { getGalaxyInstance } from "app";

const limit = 1000;

let throttlePeriod = 3000;

let throttlePeriod = 3000;

let watchTimeout = null;

// last time the history has changed

// last time changed history items have been requested

let lastRequestDate = new Date();

document.addEventListener("visibilitychange", function () {

// We only want to kick this off once we're actively watching history

let watchingVisibility = false;

function setVisibilityThrottle() {

    if (document.visibilityState === "visible") {

        // Poll every 3 seconds when visible

        throttlePeriod = 3000;

        rewatchHistory();

    } else {

        // Poll every 60 seconds when hidden/backgrounded

        throttlePeriod = 60000;

    }

});

}

export async function watchHistoryOnce(store) {

    // "Reset" watchTimeout so we don't queue up watchHistory calls in rewatchHistory.

}

export async function watchHistory(store = defaultStore) {

    // Only set up visibility listeners once, whenever a watch is first started

    if (watchingVisibility === false) {

        watchingVisibility = true;

        document.addEventListener("visibilitychange", setVisibilityThrottle);

    }

    try {

        await watchHistoryOnce(store);

    } catch (error) {