mirror of
https://github.com/vector-im/element-call.git
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7bca541cb6
* Install Knip * Clarify an import that was confusing Knip * Fix issues detected by Knip Including cleaning up some unused code and dependencies, using a React hook that we unintentionally stopped using, and also adding some previously undeclared dependencies. * Run dead code analysis in lint script and CI --------- Co-authored-by: Timo <toger5@hotmail.de>
57 lines
1.6 KiB
TypeScript
57 lines
1.6 KiB
TypeScript
/*
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Copyright 2023 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import EventEmitter from "events";
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import { useCallback, useEffect, useState } from "react";
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type LocalStorageItem = ReturnType<typeof localStorage.getItem>;
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// Bus to notify other useLocalStorage consumers when an item is changed
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export const localStorageBus = new EventEmitter();
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// Like useState, but reads from and persists the value to localStorage
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export const useLocalStorage = (
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key: string,
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): [LocalStorageItem, (value: string) => void] => {
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const [value, setValue] = useState<LocalStorageItem>(() =>
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localStorage.getItem(key),
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);
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useEffect(() => {
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localStorageBus.on(key, setValue);
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return (): void => {
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localStorageBus.off(key, setValue);
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};
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}, [key, setValue]);
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return [
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value,
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useCallback(
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(newValue: string) => {
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setValue(newValue);
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localStorage.setItem(key, newValue);
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localStorageBus.emit(key, newValue);
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},
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[key, setValue],
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),
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];
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};
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export const setLocalStorageItem = (key: string, value: string): void => {
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localStorage.setItem(key, value);
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localStorageBus.emit(key, value);
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};
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