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@ -14,30 +14,32 @@ class SwLang {
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return prelang;
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});
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public i18n: Promise<I18n<any>> | null = null;
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public setLang(newLang: string) {
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this.lang = Promise.resolve(newLang);
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set('lang', newLang);
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return this.fetchLocale();
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}
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public async fetchLocale() {
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public i18n: Promise<I18n<any>> | null = null;
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public fetchLocale() {
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return this.i18n = this._fetch();
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}
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private async _fetch() {
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// 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
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return this.i18n = new Promise(async (res, rej) => {
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const localeUrl = `/assets/locales/${await this.lang}.${_VERSION_}.json`;
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let localeRes = await caches.match(localeUrl);
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const localeUrl = `/assets/locales/${await this.lang}.${_VERSION_}.json`;
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let localeRes = await caches.match(localeUrl);
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if (!localeRes) {
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localeRes = await fetch(localeUrl);
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const clone = localeRes?.clone();
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if (!clone?.clone().ok) rej('locale fetching error');
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if (!localeRes) {
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localeRes = await fetch(localeUrl);
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const clone = localeRes?.clone();
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if (!clone?.clone().ok) Error('locale fetching error');
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caches.open(this.cacheName).then(cache => cache.put(localeUrl, clone));
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}
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caches.open(this.cacheName).then(cache => cache.put(localeUrl, clone));
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}
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res(new I18n(await localeRes.json()));
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});
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return new I18n(await localeRes.json());
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}
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}
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