const worker = {
    async fetch(request, env) {
        const response = await env.ASSETS.fetch(request);

        if (
            response.status !== 404 ||
            request.method !== 'GET' ||
            !request.headers.get('accept')?.includes('text/html')
        ) {
            return response;
        }

        const indexUrl = new URL('/index.html', request.url);
        return env.ASSETS.fetch(new Request(indexUrl, request));
    },
};

export default worker;