JavaScript class to simplify the communication with a Thymio II robot from a web app via the TDM.
The class TDM is implemented in JavaScript in thymio/index.js. It's compiled with thymio.ts by WebPack to make a single file, thymio/thymio.js. This file can be imported directly in web apps in a single <script src="thymio.js"></script> element without any other dependency. See the comments at the beginning of index.js. Communication between the web app and the TDM is done with a websocket.
For more informations about thymio.ts, see github.com/Mobsya/thymio-js-api-demo.
The TDM, or Thymio Device Manager, is the background program which handles the communication between other programs and Thymio robots. It's a part of Thymio Suite. Its source code is in github.com/Mobsya/aseba. It can also be installed without Thymio Suite; see github.com/Mobsya/tdm-launcher/releases.
index.js was first developed for VPL 3, whose source code is in github.com/epfl-mobots/vpl-web.
As per version 0.11.1 of the JavaScript TDM API, the value thrown on compilation error is the error message as a string. To get the error location in the source code, you can patch the API by running patch-thymio-api after running npm i. In thymio-api/dist/thymio.js, it will replace msg.message() with
{"message":msg.message(),"line":msg.line(),"column":msg.column()}
It's this object which is passed to the function options.failure if you set it, instead of only the error message before.