How to use the circomlib.babyJub.subOrder function in circomlib

const msgBuff = bigInt.leInt2Buff(
    msg,
    32
  )

  const rBuff = bigInt2Buffer(hash(
    buffer2BigInt(Buffer.concat(
      [h1.slice(32, 64), msgBuff]
    ))
  ))
  let r = bigInt.leBuff2int(rBuff)
  r = r.mod(babyJub.subOrder)
  const R8 = babyJub.mulPointEscalar(babyJub.Base8, r)
  const hm = multiHash([R8[0], R8[1], A[0], A[1], msg])
  const S = r.add(hm.mul(s)).mod(babyJub.subOrder)
  return {
    R8: R8,
    S: S
  }
}

debugger
    const msgBuff = snarkjs.bigInt.leInt2Buff(
        plaintext,
        32
    )

    const rBuff = bigInt2Buffer(
        mimcspongeHashOne(
            buffer2BigInt(Buffer.concat(
                [h1.slice(32, 64), msgBuff]
            ))
        )
    )

    let r = snarkjs.bigInt.leBuff2int(rBuff)
    r = r.mod(babyJub.subOrder)

    const R8 = babyJub.mulPointEscalar(babyJub.Base8, r)
    const hm = mimcsponge.multiHash([R8[0], R8[1], A[0], A[1], plaintext], 0, 1)
    const S = r.add(hm.mul(s)).mod(babyJub.subOrder)

    const signature: Signature = { R8, S }

    return signature
}

const sBuff = eddsa.pruneBuffer(h1.slice(0, 32))
  const s = bigInt.leBuff2int(sBuff)
  const A = babyJub.mulPointEscalar(babyJub.Base8, s.shr(3))

  const msgBuff = bigInt.leInt2Buff(
    msg,
    32
  )

  const rBuff = bigInt2Buffer(hash(
    buffer2BigInt(Buffer.concat(
      [h1.slice(32, 64), msgBuff]
    ))
  ))
  let r = bigInt.leBuff2int(rBuff)
  r = r.mod(babyJub.subOrder)
  const R8 = babyJub.mulPointEscalar(babyJub.Base8, r)
  const hm = multiHash([R8[0], R8[1], A[0], A[1], msg])
  const S = r.add(hm.mul(s)).mod(babyJub.subOrder)
  return {
    R8: R8,
    S: S
  }
}

)

    const rBuff = bigInt2Buffer(
        mimcspongeHashOne(
            buffer2BigInt(Buffer.concat(
                [h1.slice(32, 64), msgBuff]
            ))
        )
    )

    let r = snarkjs.bigInt.leBuff2int(rBuff)
    r = r.mod(babyJub.subOrder)

    const R8 = babyJub.mulPointEscalar(babyJub.Base8, r)
    const hm = mimcsponge.multiHash([R8[0], R8[1], A[0], A[1], plaintext], 0, 1)
    const S = r.add(hm.mul(s)).mod(babyJub.subOrder)

    const signature: Signature = { R8, S }

    return signature
}