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This commit is contained in:
tamaina 2021-02-10 23:50:38 +09:00
parent 83ec4a33ed
commit d9b4ba3c5a
1 changed files with 16 additions and 14 deletions
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30
src/client/sw/lang.ts
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@ -14,30 +14,32 @@ class SwLang {
return prelang;
});
public i18n: Promise<I18n<any>> | null = null;
public setLang(newLang: string) {
this.lang = Promise.resolve(newLang);
set('lang', newLang);
return this.fetchLocale();
}
public async fetchLocale() {
public i18n: Promise<I18n<any>> | null = null;
public fetchLocale() {
return this.i18n = this._fetch();
}
private async _fetch() {
// Service Workerは何度も起動しそのたびにlocaleを読み込むので、CacheStorageを使う
return this.i18n = new Promise(async (res, rej) => {
const localeUrl = `/assets/locales/${await this.lang}.${_VERSION_}.json`;
let localeRes = await caches.match(localeUrl);
const localeUrl = `/assets/locales/${await this.lang}.${_VERSION_}.json`;
let localeRes = await caches.match(localeUrl);
if (!localeRes) {
localeRes = await fetch(localeUrl);
const clone = localeRes?.clone();
if (!clone?.clone().ok) rej('locale fetching error');
if (!localeRes) {
localeRes = await fetch(localeUrl);
const clone = localeRes?.clone();
if (!clone?.clone().ok) Error('locale fetching error');
caches.open(this.cacheName).then(cache => cache.put(localeUrl, clone));
}
caches.open(this.cacheName).then(cache => cache.put(localeUrl, clone));
}
res(new I18n(await localeRes.json()));
});
return new I18n(await localeRes.json());
}
}