ebad8635f7
* Adjust useCall options * Extract useCall options * typo * Apply suggestions from code review * Adjust param creation in calls
27 lines
1.0 KiB
TypeScript
27 lines
1.0 KiB
TypeScript
// Copyright 2017-2020 @polkadot/apps 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 React, { useEffect, useState } from 'react';
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import { useApi, useCall } from '@polkadot/react-hooks';
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function WarmUp (): React.ReactElement {
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const { api, isApiReady } = useApi();
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const indexes = useCall<unknown>(isApiReady && api.derive.accounts?.indexes);
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const registrars = useCall<unknown>(isApiReady && api.query.identity?.registrars);
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const issuance = useCall<unknown>(isApiReady && api.query.balances?.totalIssuance);
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const historyDepth = useCall<unknown>(api.query.staking?.historyDepth);
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const [hasValues, setHasValues] = useState(false);
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useEffect((): void => {
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setHasValues(!!historyDepth || !!indexes || !!issuance || !!registrars);
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, []);
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return (
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<div className={`apps--api-warm ${hasValues.toString()}`} />
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);
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}
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export default React.memo(WarmUp);
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