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// 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 : true;
if (idbAvailable) {
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(localStorage.getItem(fallbackName(key)));
}
export async function set(key: string, val: any) {
if (idbAvailable) return iset(key, val);
return localStorage.setItem(fallbackName(key), JSON.stringify(val));
}
export async function del(key: string) {
if (idbAvailable) return idel(key);
return localStorage.removeItem(fallbackName(key));
}
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