fix: switched to use embed result finalize()

[ndobb]

Here's an attempt at a fix for #383. Please let me know if I've approached it wrong, etc.

Note I believe the contents of package.json are identical to master but git thinks there is a formatting change somewhere, apparently. In any case it should be unchanged to my knowledge.

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[domoritz]

This looks good. I think the code overall could be refactored, though. Maybe you can take a stab at it (either here or in a follow up). My idea is to use await and store the result instead of view and finalize separately. We did this refactoring in Svelte and I think it's a bit clearer. Check out: https://github.com/vega/svelte-vega/blob/59833d58a2f63511dc0a0498b049b5714c426044/packages/svelte-vega/src/VegaEmbed.svelte#L103

[ndobb]

Sounds good and thanks for pointing that out. I've updated to follow the Svelte conventions https://github.com/uwrit/react-vega/blob/fix-finalize/packages/react-vega/src/VegaEmbed.tsx#L123.

[domoritz]

Awesome. Thank you for the updates. @kristw can you take a look?

[kristw]

replaced by #421