39 lines
928 B
TypeScript
39 lines
928 B
TypeScript
// Copyright 2017-2020 @polkadot/react-api authors & contributors
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// This software may be modified and distributed under the terms
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// of the Apache-2.0 license. See the LICENSE file for details.
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import { Ledger } from '@polkadot/ui-keyring';
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import uiSettings from '@polkadot/ui-settings';
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import chains from '@polkadot/ui-settings/defaults/chains';
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import { api } from './Api';
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const ALLOWED_CHAINS = chains.kusama;
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let ledger: Ledger | null = null;
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export function isLedgerCapable (): boolean {
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try {
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return !!api && ALLOWED_CHAINS.includes(api.genesisHash.toHex());
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} catch (error) {
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return false;
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}
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}
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export function isLedger (): boolean {
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return isLedgerCapable() && uiSettings.ledgerConn !== 'none';
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}
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export function clearLedger (): void {
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ledger = null;
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}
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export function getLedger (): Ledger {
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if (!ledger) {
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ledger = new Ledger(uiSettings.ledgerConn as 'u2f');
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}
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return ledger;
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}
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