blob: a79edfdcc49b0067d83f517a780bca8337638ff4 (
plain)
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
|
/*
This file is part of GNU Taler
(C) 2021-2023 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/>
*/
import { WithId } from "../declaration.js";
/**
*
* @author Sebastian Javier Marchano (sebasjm)
*/
export interface Actions<T extends WithId> {
element: T;
type: 'DELETE' | 'UPDATE';
}
function notEmpty<TValue>(value: TValue | null | undefined): value is TValue {
return value !== null && value !== undefined;
}
export function buildActions<T extends WithId>(instances: T[], selected: string[], action: 'DELETE'): Actions<T>[] {
return selected.map(id => instances.find(i => i.id === id))
.filter(notEmpty)
.map(id => ({ element: id, type: action }))
}
/**
* For any object or array, return the same object if is not empty.
* not empty:
* - for arrays: at least one element not undefined
* - for objects: at least one property not undefined
* @param obj
* @returns
*/
export function undefinedIfEmpty<T extends Record<string, unknown>|Array<unknown>>(obj: T): T | undefined {
if (obj === undefined) return undefined
return Object.values(obj).some((v) => v !== undefined)
? obj
: undefined;
}
|
