Example Usage:
import YiActionCamera from "./yi-api";
var yi = YiActionCamera;
var fileListPath = "/tmp/fuse_d/DCIM/"
yi.connect() .then(function () { return yi.downloadFileList(fileListPath); }) .then(function (json) { console.log('file list', json); return yi.disconnect(); }) .then(function () { console.log('disconnected'); }) .catch(function (err) { console.error(err); });