cordova-cli emulate deletes plugin's javascript

[Don Coleman]

cordova-cli 2.7.4 is deleting the javascript files for plugins when I run
cordova emulate with Android.

Anyone have ideas about how to track this down and fix it?

It's pretty easy to duplicate

    $ git clone https://github.com/don/FileOpener.git
    $ cordova create foo
    $ cd foo
    $ cordova platform add android
    $ cordova plugin add ../FileOpener
    $ cordova build
    $ ls platforms/android/assets/www/js/
    fileopener.js index.js

fileopener.js exists

    $ cordova emulate
    $ ls platforms/android/assets/www/js/
    index.js

fileopener.js was deleted O_o