function onStats( error, stats ) {
			if ( error ) {
				debug( 'Encountered an error when attempting to read file stats: %s', error.message );
				throw error;
			}
			if ( stats.isFile() ) {
				count += 1;
				debug( 'Found JSON data file: %s', file );
				out.push( file );
			} else {
				total -= 1;
			}
			if ( count === total ) {
				debug( 'Finished analyzing directory contents.' );
				browserScript( out.sort() );
			}
		}
Callback invoked upon reading file stats.

@private
@param {(Error|null)} error - error object
@param {Object} stats - file stats