function camelcase( name ) {
	var alias = replace( name, RE_SEPS, ' ' );
	if ( name[ 0 ] === '_' ) {
		alias = '_' + alias.substring( 1 );
	}
	alias = uncapitalize( startcase( alias ) );
	return replace( alias, ' ', '' );
}
Converts a package basename to camelcase but retain leading underscores.

@private
@param {string} name - package basename
@returns {string} alias

@example
var out = camelcase( 'foo-bar' );
// returns 'fooBar'

@example
var out = camelcase( '_foo-bar' );
// returns '_fooBar'

@example
var out = camelcase( 'foo' );
// returns 'foo'