58 lines
1.7 KiB
TypeScript
58 lines
1.7 KiB
TypeScript
/*
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This file is part of GNU Taler
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(C) 2021-2023 Taler Systems S.A.
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GNU Taler is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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import { WithId } from "../declaration.js";
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/**
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*
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* @author Sebastian Javier Marchano (sebasjm)
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*/
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export interface Actions<T extends WithId> {
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element: T;
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type: "DELETE" | "UPDATE";
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}
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function notEmpty<TValue>(value: TValue | null | undefined): value is TValue {
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return value !== null && value !== undefined;
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}
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export function buildActions<T extends WithId>(
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instances: T[],
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selected: string[],
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action: "DELETE",
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): Actions<T>[] {
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return selected
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.map((id) => instances.find((i) => i.id === id))
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.filter(notEmpty)
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.map((id) => ({ element: id, type: action }));
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}
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/**
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* For any object or array, return the same object if is not empty.
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* not empty:
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* - for arrays: at least one element not undefined
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* - for objects: at least one property not undefined
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* @param obj
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* @returns
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*/
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export function undefinedIfEmpty<
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T extends Record<string, unknown> | Array<unknown>,
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>(obj: T): T | undefined {
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if (obj === undefined) return undefined;
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return Object.values(obj).some((v) => v !== undefined) ? obj : undefined;
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}
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