Create transaction less than 100 bytes.

tx-less100bytes.js

'use strict';

const assert = require('assert');
const bcash = require('..');
const {Stack, Script, Address} = bcash;
const {MTX, Outpoint, Input} = bcash;

const network = 'regtest';

// fill after receive receiving
const hashstr = '';
const index = 0;

/*
 * First generate receive address
 */

const receiveScript = Script.fromString(
  'OP_HASH160 0x14 0xda1745e9b549bd0bfa1a569971c77eba30cd5a4b OP_EQUAL'
);
const addr = Address.fromScripthash(receiveScript.hash160());

console.log('Address: ', addr.toString(network));

/*
 * Spend script
 */

const spendScript = Script.fromString('81');
const spendOut = Script.fromNulldata(Buffer.alloc(0));

/*
 * Verify stack
 */

const stack = new Stack();

receiveScript.compile();
spendScript.compile();

spendScript.execute(stack);
receiveScript.execute(stack);

assert.strictEqual(stack.length, 1);
assert.strictEqual(stack.getBool(0), true);

/*
 * Assemble raw spending transaction if we have hashstr
 */

if (hashstr.length > 0) {
  const mtx = new MTX();

  // reverse hex as well
  const outpoint = Outpoint.fromJSON({
    hash: hashstr,
    index: index
  });

  mtx.addInput(Input.fromOutpoint(outpoint));
  const redeem = spendScript.clone();

  redeem.pushData(receiveScript.toRaw());
  redeem.compile();

  mtx.inputs[0].script = redeem;

  mtx.addOutput({
    script: spendOut
  });

  console.log(mtx.toRaw().toString('hex'));
}