ghost-portal/packages/ui-api/src/util/intervalObservable.ts
Jaco Greeff eb0abb8307
Cleanup api call usage (#617)
* Rename apiPromise -> api

* First attemp at React render component (unused)

* Cleanup api call usage

* Cleanup linting

* Remove render component

* Adjustments on HOC types (& usage)
2019-01-18 23:04:13 +01:00

23 lines
710 B
TypeScript

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