Stream-based Extractor

[sntran]

Currently, ExtractorData stores all data of the rar file in memory, and when extract() is called, each files inside are also kept in memory as Uint8Array extraction property.

This works fine for small rar file, but would run out of memory for big file.

Would you consider adding another Extractor that supports ReadableStream, both for the rar file, and the files inside it?

[YuJianrong]

It's hard since the Extractor is just a simple wrapper for the file writing API for unrarLib. So technically the unrarlib may not write the file sequentially is hard to rewrite to a streaming class.