Jaco
ff3882f5f7
* Bump common (w/ rxjs 7) * Adjust * pre bump * Cleanup imports * Add missing switchMap * CHANGELOG * Remove duplicate imports * Bump common * Direct rxjs import
29 lines
949 B
TypeScript
29 lines
949 B
TypeScript
// Copyright 2017-2021 @polkadot/api-derive authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type { Observable } from 'rxjs';
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import type { ApiInterfaceRx } from '@polkadot/api/types';
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import type { Option } from '@polkadot/types';
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import type { AccountId } from '@polkadot/types/interfaces';
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import { map, of } from 'rxjs';
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import { isFunction } from '@polkadot/util';
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import { memo } from '../util';
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import { getInstance } from './getInstance';
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export function prime (instanceId: string, api: ApiInterfaceRx, _section: string): () => Observable<AccountId | null> {
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const section = getInstance(api, _section);
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return memo(instanceId, (): Observable<AccountId | null> =>
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isFunction(api.query[section as 'council']?.prime)
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? api.query[section as 'council'].prime<Option<AccountId>>().pipe(
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map((optPrime): AccountId | null =>
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optPrime.unwrapOr(null)
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)
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)
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: of(null)
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);
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}
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