class ConstMessage {
    constructor(id, message) {
        this.id = id;
        this.message = message;
    }
    isEqual(err) {
        if (!err || !err.id) return false;
        return this.id == err.id;
    }
}

function saveFile(data, mimeType, fileName) {
    fileName = fileName || document.title || "result";
    var blob;
    if (typeof window.Blob == "function") {
        blob = new Blob([data], {
            type: mimeType
        })
    } else {
        var BlobBuiler = window.BlobBuilder || window.MozBlobBuilder || window.WebKitBlobBuilder || window.MSBlobBuilder;
        var builer = new BlobBuiler();
        builer.append(data);
        blob = builer.getBlob(mimeType)
    }
    var URL = window.URL || window.webkitURL;
    var url = URL.createObjectURL(blob);
    var link = document.createElement("a");
    if ('download' in link) {
        link.style.visibility = "hidden";
        link.href = url;
        link.download = fileName;
        document.body.appendChild(link);
        var j = document.createEvent("MouseEvents");
        j.initEvent("click", true, true);
        link.dispatchEvent(j);
        document.body.removeChild(link)
    } else if (navigator.msSaveBlob) {
        navigator.msSaveBlob(blob, fileName)
    } else {
        location.href = url
    }
}