Accessing Crypto Class in bch-js

const BCHJS = require('@chris.troutner/bch-js')
const bchjs = new BCHJS()

async function runTest() {
  try {
    const numNum = 123; // 7B in hex
    console.log(`numNum: `, numNum);

    const numHex = numNum.toString(16);
    console.log(`numHex: ${numHex}`);

    const numBuf = Buffer.from(numHex, "hex");
    console.log(`numBuf: `, numBuf);

    const hash = bchjs.Crypto.sha256(numBuf)
    console.log(`hash: `, hash)

    const hashStr = hash.toString("hex")
    console.log(`hashStr: ${hashStr}`)
  } catch(err) {
    console.error(err)
  }
}
runTest()