Update on this item.
Bytecode implementation is now targeting the first half of 2020 to provide stability and performance improvements in the platform.
Apologies for the delay. We are continuing to work on this. Will announce here when this becomes available.
Thank you for your feedback. We are currently in public preview of static website hosting for Azure Storage to enable this scenario. Check out the blog post here for more details: https://azure.microsoft.com/en-us/blog/azure-storage-static-web-hosting-public-preview. The feature set includes support for default documents and custom error documents for HTTP status code 404.
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