openethereum/js/src/dapps/registry/util/etherscan-url.js

// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
// This file is part of Parity.

// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Parity.  If not, see <http://www.gnu.org/licenses/>.

const leading0x = /^0x/;

const etherscanUrl = (hash, isTestnet) => {
  hash = hash.toLowerCase().replace(leading0x, '');
  const type = hash.length === 40 ? 'address' : 'tx';

  return `https://${isTestnet ? 'testnet.' : ''}etherscan.io/${type}/0x${hash}`;
};

export default etherscanUrl;