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I am fairly sure that Light Table is a node-webkit[1] app, so your assumption should be correct.

[1]https://github.com/rogerwang/node-webkit

It is indeed. Chromium + embedded NodeJS written in ClojureScript.

FTW.

It seems to be possible to use the Chrome PDF Viewer. This could be nice for LaTeX development.

They've written in the past that the UI is essentially a webview, so I think that's a fair assessment

edit: also, I've successfully nuked the app at least once by evaluating document.write (or similar) in the IDE. heh

Hard to tell until they release the source code (which is supposed to happen after the 0.4 release). The whole UI is actually rendered HTML using WebKit or a derivative for sure.