@polkadot/react-api/ledger.js

A collection of RxJs React components the Polkadot JS API

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isLedgerCapable = isLedgerCapable;
exports.isLedger = isLedger;
exports.clearLedger = clearLedger;
exports.getLedger = getLedger;

var _uiKeyring = require("@polkadot/ui-keyring");

var _uiSettings = _interopRequireDefault(require("@polkadot/ui-settings"));

var _chains = _interopRequireDefault(require("@polkadot/ui-settings/defaults/chains"));

var _Api = require("./Api");

// Copyright 2017-2020 @polkadot/react-api authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
const ALLOWED_CHAINS = _chains.default.kusama;
let ledger = null;

function isLedgerCapable() {
  try {
    return !!_Api.api && ALLOWED_CHAINS.includes(_Api.api.genesisHash.toHex());
  } catch (error) {
    return false;
  }
}

function isLedger() {
  return isLedgerCapable() && _uiSettings.default.ledgerConn !== 'none';
}

function clearLedger() {
  ledger = null;
}

function getLedger() {
  if (!ledger) {
    ledger = new _uiKeyring.Ledger(_uiSettings.default.ledgerConn);
  }

  return ledger;
}