Jaco
ff3882f5f7
* Bump common (w/ rxjs 7) * Adjust * pre bump * Cleanup imports * Add missing switchMap * CHANGELOG * Remove duplicate imports * Bump common * Direct rxjs import
30 lines
1020 B
TypeScript
30 lines
1020 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 { ReferendumIndex } from '@polkadot/types/interfaces';
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import type { BN } from '@polkadot/util';
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import { map, of } from 'rxjs';
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import { memo } from '../util';
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export function referendumIds (instanceId: string, api: ApiInterfaceRx): () => Observable<BN[]> {
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return memo(instanceId, (): Observable<BN[]> =>
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api.query.democracy?.lowestUnbaked
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? api.queryMulti<[ReferendumIndex, ReferendumIndex]>([
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api.query.democracy.lowestUnbaked,
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api.query.democracy.referendumCount
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]).pipe(
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map(([first, total]): BN[] =>
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total.gt(first)
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// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
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? [...Array(total.sub(first).toNumber())].map((_, i): BN => first.addn(i))
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: []
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)
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)
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: of([])
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);
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}
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