workaround for https://github.com/cloudflare/workerd/issues/698

cloudflare-worker-fetch-cache-workaround.js

// workaround for https://github.com/cloudflare/workerd/issues/698
const originalFetch = globalThis.fetch;
globalThis.fetch = async function (...args) {
  try {
    return await originalFetch.apply(this, args);
  } catch (e) {
    if (!args[1] || typeof args[1] !== 'object') throw e;

    const unimplementedCacheError =
      e && typeof e === 'object' && 'message' in e && e.message === "The 'cache' field on 'RequestInitializerDict' is not implemented.";
    if (!unimplementedCacheError) throw e;

    const newOpts = { ...args[1] };
    delete newOpts.cache;
    return originalFetch.apply(this, [args[0], newOpts]);
  }
};

Thanks, my friend, this workaround fixed my cloudflare worker error. 👍