Use visibility API to throttle history polling -- when the tab is

import { getGalaxyInstance } from "app";

const limit = 1000;

const throttlePeriod = 3000;

let throttlePeriod = 3000;

let watchTimeout = null;

// last time changed history items have been requested

let lastRequestDate = new Date();

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

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

        // Poll every 3 seconds when visible

        throttlePeriod = 3000;

    } 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.

    watchTimeout = null;