ghost-portal/packages/react-api/src/util/intervalObservable.ts
Jaco Greeff e6ca2db884
Rename ui-* -> react-* (#1495)
* Rename ui-* -> react-*

* Rename actual folders

* react-app -> react-components

* CSS links
2019-08-12 13:12:05 +02:00

24 lines
770 B
TypeScript

// Copyright 2017-2019 @polkadot/react-api 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 { CallState } from '../types';
import { Subscription } from 'rxjs';
import { interval } from 'rxjs/observable/interval';
const interval$ = interval(500);
export default function intervalSubscribe<T, Props, State extends CallState> (that: React.Component<Props, State>): Subscription {
return interval$.subscribe((): void => {
const elapsed = Date.now() - ((that.state.callUpdatedAt as number) || 0);
const callUpdated = elapsed <= 1500;
if (callUpdated !== that.state.callUpdated) {
that.setState({
callUpdated
});
}
});
}