Will it support .jsx files?

[gocreating]

both gulp-preprocess and preprocessify are using preprocess
but it seems it doesn't support jsx files
will preprocess support jsx in the future?

[BendingBender]

Well, if you're talking about React's jsx, then this is basically JavaScript with some inline XML. In this case you can use the newest version of the lib directly as is. You must however provide the following option to the preprocess() function:

{
  type: 'js'
}

If you're using gulp-preprocess or preprocessify, you'll have to open an issue there so that they bump their dependencies and implement the pass-through of the new options.