491f0cd08a
* Copyright headers 1 * Licence headers 2 * Copyright Headers 3 * Copyright Headers 4 * Copyright Headers 5 * Copyright Headers 6 * Copyright headers 7 * Add copyright headers for html and config file * Replace license files and update package.json * Update with CLA * lint
26 lines
810 B
TypeScript
26 lines
810 B
TypeScript
/*
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Copyright 2024 New Vector Ltd.
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Copyright 2021 The Matrix.org Foundation C.I.C.
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SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
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Please see LICENSE files in the repository root for full details.
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*/
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import { useState } from "react";
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// Hook to simplify managing state of arrays of a common type
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export const useStateArray = <T>(initialSize: number, initialState: T | T[]): [T[], (i: number, v: T) => void] => {
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const [data, setData] = useState<T[]>(() => {
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return Array.isArray(initialState) ? initialState : new Array(initialSize).fill(initialState);
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});
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return [
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data,
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(index: number, value: T) =>
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setData((data) => {
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const copy = [...data];
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copy[index] = value;
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return copy;
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}),
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];
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};
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