json: minimap as pure json example

[ibgreen]

For #3557

Background

• New example that uses declarative view api to set up minimap

@Pessimistress

• I get this working to 95% but still an issue where the view stats snaps back...
• maybe you can help me assess if there is a way to fix this with current API, if this is a bug, or if we'd need to make changes to make this work.

[coveralls]

Coverage increased (+2.9%) to 82.471% when pulling 03c933e on ib/json-minimap-example into 35c0d45 on master.

[Pessimistress]

main?

[Pessimistress]

still an issue where the view stats snaps back

There is a known bug in https://github.com/uber/deck.gl/blob/master/modules/core/src/lib/deck.js#L743 where the ViewManager is updated without view id. A fix (breaking change) is scheduled for v8 unless this is affecting your use case.

[ibgreen]

There is a known bug in /modules/core/src/lib/deck.js@master#L743 where the ViewManager is updated without view id. A fix (breaking change) is scheduled for v8 unless this is affecting your use case.

Not sure if it is worth a breaking change. I do think our multiview support is a pretty impressive feature of deck.gl but I don't think many users realize how easy it is to use. So I do think a JSON example that shows this is worth something.

I am not sure I see how the modified view state from the minimap makes it back to the view manager, but assuming this is indeed the problem, perhaps we could do a temporary non-breaking fix by checking for another viewState.noupdate flag and avoid calling the offending like if detected?

[Pessimistress]

Drop quotes

[ibgreen]

Good catch. Will do in followup.