26 lines
643 B
TypeScript
26 lines
643 B
TypeScript
// Copyright 2017-2020 @polkadot/react-query authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type { Header } from '@polkadot/types/interfaces';
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import React from 'react';
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import { useApi, useCall } from '@polkadot/react-hooks';
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interface Props {
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className?: string;
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label?: React.ReactNode;
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}
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function BestHash ({ className = '', label }: Props): React.ReactElement<Props> {
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const { api } = useApi();
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const newHead = useCall<Header>(api.rpc.chain.subscribeNewHeads);
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return (
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<div className={className}>
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{label || ''}{newHead?.hash.toHex()}
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</div>
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);
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}
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export default React.memo(BestHash);
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