There are more and more questions on the forum about using existing 3rd party libraries with Processing.js and as  a library developer I am interested in porting some of my libraries to JS.

Looking at the website I found this article and in it it states

If you are a library creator and are interested in creating a JavaScript compatible library, stay tuned as we are developing standards and methods for doing so.

So my first question is what stage has this reached?
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I have been thinking of making my libraries cross-mode and being realistic I don't think that is a viable option. The problem is that some of my libraries make use of Java language features such as the Java collections and reflection which are not available in JavaScript or in the Processing API

So unless someone knows better it seems that I have three choices

1. rewrite the libray to only use methods available in the Processing API and then let Processing.js convert it to JavaScript and omit those elements that can't be implemented.
   
2. rewrite as much of the library as possible using the Processing API and create pure JavaScript code for those remaining parts.
   
3. rewrite the library in pure JavaScript

The first option is good in that it would make it JAVA<>JAVASCRIPT cross-mode compatible, but then (in some libraries) many of the features available in JAVA mode would have to go.

Options 2 and 3 would need a mechanism to integrate 3rd party JavaScript into the sketch. Does anyone know if this already exists?

Anyway these are some of my initial thoughts and it would be good to hear other people's thoughts on this topic.