Make compatible with latest rollup. Fixes #1.

[iamDecode]

This plugin did not work with the latest rollup due changes in the signature the signature for ongenerate(see here). Rather than an array, an object is used to store modules. Hence issue #1 occurs.

Object.keys would not work, as we cannot guarantee the proper order of keys. However, in case the keys of the object are strings, Object.getOwnPropertyNames should yield keys in property creation order (see link). Using this method we can restore functionality of this plugin for recent versions of rollup.

Let me know what you think. I haven't tested this thoroughly, but for my project it works fine.

[danburzo]

Thanks for this! I will also try it in some projects we're using it. I did not stay up to date with the latest Rollup news, and this seems like a good compromise for now. Can we check if module is an Array (with Array.isArray) or an Object and, depending on the type, get the list of modules appropriately? This will help us support a wider range of Rollup versions.

I guess ultimately we'll need to use the generateBundle hook instead of ongenerate / onwrite.

[iamDecode]

Sure thing, PR is updated :)

[danburzo]

Excellent, thank you!

[danburzo]

Tested on Evercoder/uiuiui, the order in the CSS is preserved with the upgrade to the latest Rollup version. 👍