How to use the tiny-secp256k1.isPoint function in tiny-secp256k1

return _chunks()[0];
  });
  lazy.prop(o, 'input', () => {
    if (!a.signature) return;
    return bscript.compile([a.signature]);
  });
  lazy.prop(o, 'witness', () => {
    if (!o.input) return;
    return [];
  });
  // extended validation
  if (opts.validate) {
    if (a.output) {
      if (a.output[a.output.length - 1] !== OPS.OP_CHECKSIG)
        throw new TypeError('Output is invalid');
      if (!ecc.isPoint(o.pubkey))
        throw new TypeError('Output pubkey is invalid');
      if (a.pubkey && !a.pubkey.equals(o.pubkey))
        throw new TypeError('Pubkey mismatch');
    }
    if (a.signature) {
      if (a.input && !a.input.equals(o.input))
        throw new TypeError('Signature mismatch');
    }
    if (a.input) {
      if (_chunks().length !== 1) throw new TypeError('Input is invalid');
      if (!bscript.isCanonicalScriptSignature(o.signature))
        throw new TypeError('Input has invalid signature');
    }
  }
  return Object.assign(o, a);
}

network?: Network,
  depth?: number,
  index?: number,
  parentFingerprint?: number,
): BIP32Interface {
  typeforce(
    {
      publicKey: typeforce.BufferN(33),
      chainCode: UINT256_TYPE,
    },
    { publicKey, chainCode },
  );
  network = network || BITCOIN;

  // verify the X coordinate is a point on the curve
  if (!ecc.isPoint(publicKey)) throw new TypeError('Point is not on the curve');
  return new BIP32(
    undefined,
    publicKey,
    chainCode,
    network,
    depth,
    index,
    parentFingerprint,
  );
}

});
  lazy.prop(o, 'input', () => {
    if (!a.signature) return;
    return bscript.compile([a.signature]);
  });
  lazy.prop(o, 'witness', () => {
    if (!o.input) return;
    return [];
  });

  // extended validation
  if (opts.validate) {
    if (a.output) {
      if (a.output[a.output.length - 1] !== OPS.OP_CHECKSIG)
        throw new TypeError('Output is invalid');
      if (!ecc.isPoint(o.pubkey))
        throw new TypeError('Output pubkey is invalid');
      if (a.pubkey && !a.pubkey.equals(o.pubkey!))
        throw new TypeError('Pubkey mismatch');
    }

    if (a.signature) {
      if (a.input && !a.input.equals(o.input!))
        throw new TypeError('Signature mismatch');
    }

    if (a.input) {
      if (_chunks().length !== 1) throw new TypeError('Input is invalid');
      if (!bscript.isCanonicalScriptSignature(o.signature!))
        throw new TypeError('Input has invalid signature');
    }
  }

function fromPublicKeyLocal(publicKey, chainCode, network, depth, index, parentFingerprint) {
    typeforce({
        publicKey: typeforce.BufferN(33),
        chainCode: UINT256_TYPE,
    }, { publicKey, chainCode });
    network = network || BITCOIN;
    // verify the X coordinate is a point on the curve
    if (!ecc.isPoint(publicKey))
        throw new TypeError('Point is not on the curve');
    return new BIP32(undefined, publicKey, chainCode, network, depth, index, parentFingerprint);
}
function fromSeed(seed, network) {

      if (!o.pubkeys.every(x => ecc.isPoint(x)))
        throw new TypeError('Output is invalid');

function isCanonicalPubKey(buffer) {
  return ecc.isPoint(buffer);
}
exports.isCanonicalPubKey = isCanonicalPubKey;

else hash = hash2;
    }

    if (a.pubkey) {
      const pkh = bcrypto.hash160(a.pubkey);
      if (hash.length > 0 && !hash.equals(pkh))
        throw new TypeError('Hash mismatch');
      else hash = pkh;
    }

    if (a.input) {
      const chunks = _chunks();
      if (chunks.length !== 2) throw new TypeError('Input is invalid');
      if (!bscript.isCanonicalScriptSignature(chunks[0] as Buffer))
        throw new TypeError('Input has invalid signature');
      if (!ecc.isPoint(chunks[1]))
        throw new TypeError('Input has invalid pubkey');

      if (a.signature && !a.signature.equals(chunks[0] as Buffer))
        throw new TypeError('Signature mismatch');
      if (a.pubkey && !a.pubkey.equals(chunks[1] as Buffer))
        throw new TypeError('Pubkey mismatch');

      const pkh = bcrypto.hash160(chunks[1] as Buffer);
      if (hash.length > 0 && !hash.equals(pkh))
        throw new TypeError('Hash mismatch');
    }
  }

  return Object.assign(o, a);
}

      if (!o.pubkeys!.every(x => ecc.isPoint(x)))
        throw new TypeError('Output is invalid');