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38 lines
1.0 KiB
TypeScript
38 lines
1.0 KiB
TypeScript
// 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、
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// indexedDBが使えない環境ではlocalStorageを使う
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import {
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get as iget,
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set as iset,
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del as idel,
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} from 'idb-keyval';
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const fallbackName = (key: string) => `idbfallback::${key}`;
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let idbAvailable = typeof window !== 'undefined' ? !!window.indexedDB : true;
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if (idbAvailable) {
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try {
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await iset('idb-test', 'test');
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} catch (e) {
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console.error('idb error', e);
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idbAvailable = false;
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}
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}
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if (!idbAvailable) console.error('indexedDB is unavailable. It will use localStorage.');
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export async function get(key: string) {
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if (idbAvailable) return iget(key);
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return JSON.parse(localStorage.getItem(fallbackName(key)));
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}
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export async function set(key: string, val: any) {
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if (idbAvailable) return iset(key, val);
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return localStorage.setItem(fallbackName(key), JSON.stringify(val));
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}
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export async function del(key: string) {
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if (idbAvailable) return idel(key);
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return localStorage.removeItem(fallbackName(key));
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}
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