nl_tokens: TODO : Implement delta refs to reduce stream size
pl_tokens: function pack ( hashes , opts , callback ) { /*jshint validthis:true*/ if ( ! callback ) return pack . bind ( this , hashes , opts ) ; var repo = this ; var i = 0 , first = true , done = false ; return callback ( null , applyParser ( { take : take } , encodePack ) ) ; function take ( callback ) { if ( done ) return callback ( ) ; if ( first ) return readFirst ( callback ) ; var hash = hashes [ i ++ ] ; if ( hash === undefined ) { return callback ( ) ; } repo . loadRaw ( hash , function ( err , buffer ) { if ( err ) return <mask> ( err ) ; if ( ! buffer ) return callback ( new Error ( "Missing hash: " + hash ) ) ; // Reframe with pack format header callback ( null , codec . deframe ( buffer ) ) ; } ) ; } function readFirst ( callback ) { first = false ; callback ( null , { num : hashes . length } ) ; } }