31 lines
888 B
TypeScript
31 lines
888 B
TypeScript
/* eslint-disable @typescript-eslint/camelcase */
|
|
// Copyright 2017-2020 @polkadot/react-query authors & contributors
|
|
// This software may be modified and distributed under the terms
|
|
// of the Apache-2.0 license. See the LICENSE file for details.
|
|
|
|
import { Header } from '@polkadot/types/interfaces';
|
|
import { BareProps, CallProps } from '@polkadot/react-api/types';
|
|
|
|
import React from 'react';
|
|
import { useApi, useCall } from '@polkadot/react-hooks';
|
|
|
|
interface Props extends BareProps, CallProps {
|
|
label?: React.ReactNode;
|
|
}
|
|
|
|
function BestHash ({ className, label, style }: Props): React.ReactElement<Props> {
|
|
const { api } = useApi();
|
|
const newHead = useCall<Header>(api.rpc.chain.subscribeNewHeads, []);
|
|
|
|
return (
|
|
<div
|
|
className={className}
|
|
style={style}
|
|
>
|
|
{label || ''}{newHead?.hash.toHex()}
|
|
</div>
|
|
);
|
|
}
|
|
|
|
export default React.memo(BestHash);
|