CoffeeScript source maps

http://ryanflorence.com/2012/coffeescript-source-maps/

by v33ra • 14 years ago

122 10 14 years ago

This is possibly the most important thing to happen to my frontend development workflow all year. Amazing contribution. Thank you.

mnemonik• 14 years ago

I just want to note that the new CoffeeScript compiler is using ESCodeGen as a backend, which is doing the source map heavy lifting. Anyone writing a compiler which targets JS can use ESCodeGen as a backend and get source maps pretty much for free. Awesome news all around!

https://github.com/Constellation/escodegen

Note: I do not want it to seem like I want to take anything away from Michael Ficarra and the new CoffeeScript compiler. He also wrote the code to integrate source maps with ESCodeGen, but it is something that many projects will be able to take advantage of, not just CoffeeScript.

In other source map news, if anyone hasn't seen it yet, UglifyJS v2 now supports source maps: http://lisperator.net/blog/uglifyjs-v2-news/

Source map support is on the way for Firefox's debugger as well: https://bugzilla.mozilla.org/show_bug.cgi?id=771597

ryanflorence• 14 years ago

Suppose I could go make that more clear in the article.

danmaz74• 14 years ago

I would LOVE to see source maps implemented into Rails CS compilation. Any idea how to do it/when will this be added to rails?

calibraxis2• 14 years ago

Will this affect debugging under node.js, or just browsers? (Googling doesn't seem to make this clear.)

jeremiep• 14 years ago

I would assume both, if you use node-inspector to debug your programs you are using the browser's debugger.

calibraxis2• 14 years ago

Ah, I was just asking about stacktraces, if the line-numbers will then correspond to the CoffeeScript line-numbers.

It's no issue for me personally, but it helps smooth over resistance to CoffeeScript.

pwpwp• 14 years ago

As the article mentions, the next big step will be access to the debug console.

jarek-foksa• 14 years ago

Is CoffeeScriptRedux actually ready for production use? From my read of https://github.com/michaelficarra/CoffeeScriptRedux/wiki/Pro... there are many features missing.

michaelficarra• 14 years ago

I would not recommend you use it in production just yet, but from my reading of that wiki page, there are only 3 or 4 fairly uncommon features that are unsupported. Most of them could still use more tests, though, and that's why they are missing that last checkmark.

CoffeeScript source maps

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