A globalVariables view

[slodge]

Definitely not for merging at this stage!

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I've started experimenting in building a Globals Variable view.

The reason for this is because I've found people want a "debugger autos/locals/watch window" like experience - and it's what they find in the (for example) the RStudio REPL

(Please excuse the bad retina screen menus - caused by my weird multi-monitor setup!)

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To start exploring this idea, I've built quite a hacky way of returning the globals after every evaluation and adding a simple display to the existing page header - but I don't think this is the way this should ultimately be done - a proper solution would:

• be more efficient in its agent-UI comms
• find a better on-screen position for the globals display (and include variable names, and have a scroll bar, and have in-place incremental updating)
• I'm also wondering about adding some pure typescript/javascript code - I'm in awe of the C#/Javascript interop code I've found in this solution, but I don't yet find it very productive compared to Angular or React development.

This current demo code produces an experience like:

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Is this sort of thing something that would be of interest to the main Workbooks product?