1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
This file is part of GNU Taler
(C) 2021-2024 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
*
* @author Sebastian Javier Marchano (sebasjm)
*/
import { useState } from "preact/hooks";
export interface Options {
slowTolerance: number;
}
export interface AsyncOperationApi<T> {
request: (...a: any) => void;
cancel: () => void;
data: T | undefined;
isSlow: boolean;
isLoading: boolean;
error: string | undefined;
}
export function useAsync<T>(
fn?: (...args: any) => Promise<T>,
{ slowTolerance: tooLong }: Options = { slowTolerance: 1000 },
): AsyncOperationApi<T> {
const [data, setData] = useState<T | undefined>(undefined);
const [isLoading, setLoading] = useState<boolean>(false);
const [error, setError] = useState<any>(undefined);
const [isSlow, setSlow] = useState(false);
const request = async (...args: any) => {
if (!fn) return;
setLoading(true);
const handler = setTimeout(() => {
setSlow(true);
}, tooLong);
try {
const result = await fn(...args);
setData(result);
} catch (error) {
setError(error);
}
setLoading(false);
setSlow(false);
clearTimeout(handler);
};
function cancel(): void {
setLoading(false);
setSlow(false);
}
return {
request,
cancel,
data,
isSlow,
isLoading,
error,
};
}
|
