What are the constrains on the slice passed to connectionFromArraySlice? about graphql-relay-js HOT 2 OPEN

I'm not really sure I understand what you're asking here, although I see you followed up with #82. Perhaps we should discuss there instead?

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Sorry wrote that before going to bed... It is not specifically related to #82.

My point is that connectionFromArraySlice expects a slice that contains the elements it needs to populate the page. But you cannot know what those elements are without first going through the pagination algorithm. And right now the pagination algorithm is implemented directly in connectionFromArraySlice (vs factored out in its own function).

This leaves with 2 options when constructing the slice to pass to connectionFromArraySlice:

1. Come up with a heuristics / strategy to easily compute offsetStart and offsetEnd before calling connectionFromArraySlice,
2. Call connectionFromArraySlice with dummy data to extract offsetStart and offsetEnd, generate a slice based on these params and call again connectionFromArraySlice with the slice

Is this clearer?

If yes, happy to factor out this pagination algorithm (for a bounded array) into its own function :)

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