browser 方法

import { getIeVersion } from 'utils/browser';

const ieVersion = getIeVersion();
// => 11

import { client } from 'utils/browser';

const client = client();
// => { {ie: 0, firefox: 0, safari: 0, konq: 0, opera: 0, safari: 0, ver: "78.0.3904.70"}
// engine: {ie: 0, gecko: 0, webkit: 537.36, khtml: 0, opera: 0, ver: "537.36",webkit: 537.36}
// system: {win: "NT", mac: false, x11: false, iphone: false, ipod: false, mac: false, nokiaN: false, ps: false,wii: false,win: "NT",winMobile: false,x11: false}
// }