/**
 * whichBrowser
 * 浏览器类型 Opera Chrome Safari FF IE
 * @author guobin201314@gmail.com on 2019-04-17
 */

export function whichBrowser(): Browser {
    const userAgent = navigator.userAgent;
    const isOpera = userAgent.indexOf("Opera") > -1;
    if (isOpera) {
        return "Opera";
    }
    if (userAgent.indexOf("Firefox") > -1) {
        return "FF";
    }
    if (userAgent.indexOf("Chrome") > -1) {
        return "Chrome";
    }
    if (userAgent.indexOf("Safari") > -1) {
        return "Safari";
    }
    if (
        userAgent.indexOf("compatible") > -1 &&
        userAgent.indexOf("MSIE") > -1 &&
        !isOpera
    ) {
        return "IE";
    }
    return "IE";
}

export type Browser = "Opera" | "FF" | "Chrome" | "Safari" | "IE";