gistfile1.txt

async function getOutputScript(address) {
	let script = await bitcoin.address.toOutputScript(address, getNetwork());
	return script;
}

exports.prepareTx = async function (myaddresses, destination, satoshi, feeRate) {

	let addresses = myaddresses.filter(hasUTXO)
	for(let i = 0; i < addresses.length; i++) {
		addresses[i].txs = await explorer.getAddressTxs(addresses[i].address);
	}

	let utxo = await getUTXO(addresses);

	let targets = [{
		"address": destination,
		"value": parseFloat(satoshi) * 100000000
	}]
	let { inputs, outputs, fee } = coinselect(utxo, targets, feeRate)

	if (!inputs || !outputs) return

	const psbt = new bitcoin.Psbt({ network: network });
	inputs.forEach(input => psbt.addInput(
		{
			"hash": input.txId,
			"index": input.vout,
			"sequence": 0xfffffffe,
			"witnessUtxo": {
				"script": input.pubKeyScript,
				"value": input.value
			}
		}
	))


	for(let i = 0; i < outputs.length; i++) {
		if (!outputs[i].address) {
    	outputs[i].address = await this.getCurrentChangeAddress()
		}
		let script = await getOutputScript(outputs[i].address)

		psbt.addOutput({
			"script": script,
			"value": outputs[i].value
		})
	}


	return psbt;
}