Function createFileLoader

src/background/utils/network.ts:216–257

()

}

export function createFileLoader(): FileLoader {
    const caches = {
        'data-url': new LimitedCacheStorage(),
        'text': new LimitedCacheStorage(),
    };

    const loaders = {
        'data-url': loadAsDataURL,
        'text': loadAsText,
    };

    const limiters = {
        'data-url': createLimiter(),
        'text': createLimiter(),
    };

    async function get({url, responseType, mimeType, origin}: FetchRequestParameters): Promise<FileLoaderResponse> {
        const cache = caches[responseType];
        const load = loaders[responseType];
        const limiter = limiters[responseType];
        if (cache.has(url)) {
            const data = cache.get(url)!;
            return {data};
        }

        if (limiter.loading(url)) {
            return limiter.wait(url);
        }

        try {
            const data = await load(url, mimeType, origin);
            cache.set(url, data);
            limiter.loaded(url, data);
            return {data};
        } catch (error: any) {
            limiter.failed(url, error);
            return {error};
        }
    }

    return {get};
}