egirlskey/packages/frontend/src/scripts/idb-proxy.ts
Shun Sakai c2370a1be6
chore: 著作権とライセンスについての情報を各ファイルに追加する (#11348)
* chore: Add the SPDX information to each file

Add copyright and licensing information as defined in version 3.0 of
the REUSE Specification.

* tweak format

---------

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>
2023-07-27 14:31:52 +09:00

42 lines
1.2 KiB
TypeScript

/*
* SPDX-FileCopyrightText: syuilo and other misskey contributors
* SPDX-License-Identifier: AGPL-3.0-only
*/
// FirefoxのプライベートモードなどではindexedDBが使用不可能なので、
// indexedDBが使えない環境ではlocalStorageを使う
import {
get as iget,
set as iset,
del as idel,
} from 'idb-keyval';
const fallbackName = (key: string) => `idbfallback::${key}`;
let idbAvailable = typeof window !== 'undefined' ? !!(window.indexedDB && window.indexedDB.open) : true;
if (idbAvailable) {
await iset('idb-test', 'test')
.catch(err => {
console.error('idb error', err);
console.error('indexedDB is unavailable. It will use localStorage.');
idbAvailable = false;
});
} else {
console.error('indexedDB is unavailable. It will use localStorage.');
}
export async function get(key: string) {
if (idbAvailable) return iget(key);
return JSON.parse(window.localStorage.getItem(fallbackName(key)));
}
export async function set(key: string, val: any) {
if (idbAvailable) return iset(key, val);
return window.localStorage.setItem(fallbackName(key), JSON.stringify(val));
}
export async function del(key: string) {
if (idbAvailable) return idel(key);
return window.localStorage.removeItem(fallbackName(key));
}