export function File (input) {
    var self = this;

    function updateStat(stat) {
        self.stat = stat;
        self.lastModifiedDate = self.stat.mtime;
        self.size = self.stat.size;
    }

    if ('string' === typeof input) {
        self.path = input;
    } else {
        Object.keys(input).forEach(function (k) {
            self[k] = input[k];
        });
    }

    self.name = self.name// || path.basename(self.path||'');
    if (!self.name) {
        throw new Error("No name");
    }
    self.type = self.type// || mime.lookup(self.name);

    if (!self.path) {
        if (self.buffer) {
            self.size = self.buffer.length;
        } else if (!self.stream) {
            throw new Error('No input, nor stream, nor buffer.');
        }
        return;
    }

    if (!self.jsdom) {
        return;
    }

    // if (!self.async) {
    //     updateStat(fs.statSync(self.path));
    // } else {
    //     fs.stat(self.path, function (err, stat) {
    //         updateStat(stat);
    //     });
    // }
}