import React from "react"; import Router from "component/router/index"; import Header from "component/header"; import ModalRouter from "modal/modalRouter"; import lbry from "lbry"; class App extends React.PureComponent { componentWillMount() { const { alertError, checkUpgradeAvailable, updateBalance, fetchRewardedContent, } = this.props; document.addEventListener("unhandledError", event => { alertError(event.detail); }); if (!this.props.upgradeSkipped) { checkUpgradeAvailable(); } lbry.balanceSubscribe(balance => { updateBalance(balance); }); fetchRewardedContent(); this.scrollListener = () => this.props.recordScroll(window.scrollY); window.addEventListener("scroll", this.scrollListener); } componentWillUnmount() { window.removeEventListener("scroll", this.scrollListener); } render() { return (