23 lines
713 B
TypeScript
23 lines
713 B
TypeScript
// Copyright 2017-2019 @polkadot/api-derive 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 { BlockNumber } from '@polkadot/types/interfaces';
|
|
|
|
import { Observable } from 'rxjs';
|
|
import { map } from 'rxjs/operators';
|
|
import { ApiInterfaceRx } from '@polkadot/api/types';
|
|
|
|
import { drr } from '../util';
|
|
import { info } from './info';
|
|
|
|
export function sessionProgress (api: ApiInterfaceRx): () => Observable<BlockNumber> {
|
|
const infoCall = info(api);
|
|
|
|
return (): Observable<BlockNumber> =>
|
|
infoCall().pipe(
|
|
map(({ sessionProgress }): BlockNumber => sessionProgress),
|
|
drr()
|
|
);
|
|
}
|