CLI Option for Extension Handlers

[EndangeredMassa]

It looks like the file watcher is only available on the CLI. The problem is that I need custom extension handler for my project.

Is there a way to add this to the CLI? I can't think of a great interface for it, but something like -h extension:path-to-file might be useful enough. That file would be a module that exports a function that acts just like the handlers object callbacks.

module.exports = (body, filename) ->
  body = body.toString()
  compiled = body.replace(/\"/g, "\\\"").replace(/\n/g, '\\\n')                                                                                                                 
  require('esprima').parse("module.exports = \"#{compiled}\";")

Then, if you allow lists in some way, I could use the same transform method for multiple extensions.

It seems like a complex option to pass on a command line, but it would be very useful to me.

[michaelficarra]

This sounds good. We can rip off mocha here. They use an option with extension:module, where the module adds require.extensions support for that extension. Then, since it's a global mutation, we can just pull that function out of our environment. Like #28, this will rely on michaelficarra/jedediah#1.

[michaelficarra]

Unfortunately, we can't just use require.extensions here, since the function you put on require.extensions just calls the .compile method of its first argument, and doesn't have a guaranteed return value. Since we have a sync interface, there's nothing we can do with this. Going with your original suggestion.