22 lines
735 B
TypeScript
22 lines
735 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 { ApiInterfaceRx } from '@polkadot/api/types';
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import type { AccountId } from '@polkadot/types/interfaces';
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import type { Observable } from '@polkadot/x-rxjs';
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import { map } from '@polkadot/x-rxjs/operators';
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import { memo } from '../util';
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/**
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* @description Retrieve the list of all validator stashes
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*/
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export function stashes (instanceId: string, api: ApiInterfaceRx): () => Observable<AccountId[]> {
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return memo(instanceId, (): Observable<AccountId[]> =>
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api.query.staking.validators.keys().pipe(
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map((keys) => keys.map(({ args: [validatorId] }) => validatorId).filter((a) => a))
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)
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);
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}
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