gistfile1.js

var binConv = require( "binstring" );
var btcTx = require( "btc-transaction" );
var Script = require( 'btc-script' );

var doc = {
	"hash": "dc55d9c6ec03ceccf0db43d29e7d626a8b107f41066e3917f30398bb01dda2b5",
	"version": 1,
	"locktime": 0,
	"ins": [ {
		"outpoint": {
			"index": 1,
			"hash": "de2c3fa45a1b8fa7057fc2db09efa6acd6524551a13d01a846ac1e3acc1476f8",
			"value": 6960000,
		},
		"scriptSig": "4830450221009aa61b4798a5a4c04f86d0de6c936b60bd046f15d4eb55a244d9206bc3af6f93022010a9f0f2186d76e71d781c5e4d36d704212b99efcf6ba5791db88379e6a23fbe014104b4c157eb55f8a04111d2eb55d2f4b632fa03d066a844254e350ff7ba67d2e355aad46ac73693c33bea5ddc86c426ee1557098554da9bc02acf0445f9775efdb5",
		"sequence": 4294967295
	} ],
	"outs": [ {
		"value": 2000000,
		"scriptPubKey": "76a9140c79f15f08b0f94a2cba8de036272dee3ecb096188ac"
	}, {
		"value": 4950000,
		"scriptPubKey": "76a9143858230049f6c83ba435eac829ae332cab3609f788ac"
	} ]
}

var tx = new btcTx.Transaction( doc );

var ser = binConv( tx.serialize(), {
	out: 'hex'
} )

var hash = binConv( tx.getHash(), {
	out: 'hex'
} )