Make Metalsmith interoperable with Gulp

[normanrz]

There are quite a few build tools that have popped up in the last months. Gulp is one of them. It is based on node streams and has a very fast-growing plugin ecosystem. However, it doesn't have great metaphors for 1:n file transformations, like Sass-imports or RequireJS optimization. Because of the tree-transformations possible in Metalsmith plugins, it is a better fit for these kind of tasks.

I was wondering if it was a good idea to make Metalsmith ready for interoperation. Gulp uses Vinyl for representing files which is very similar to Metalsmith's representation. There could be a very thin adapter. Other than that Metalsmith would need a way to accept in-memory files as input instead of disk-only. For in-memory output, I made #28.

I'm curious, what you guys think.

[ianstormtaylor]

thanks! i like the idea of exposing #run :) added in 0.5.0

[normanrz]

Cool. I like the new #run, too :-)

[normanrz]

Passing a dir to new Metalsmith(dir) seems a bit weird for this, though.