Schema detection, integration with tibblify?

[krlmlr]

Are you open to adding schema support to the package? Are you familiar with tibblify (https://github.com/mgirlich/tibblify/)?

I wonder if it's worth combining these two ideas. We might need a pre-parsing of the JSON file to infer the schema, but it will be faster than reading and materializing the JSON file into R just to infer the schema.

CC @mgirlich.

[coolbutuseless]

This sounds interesting and worth exploring. Maybe not for initial version though!