One mystery solved, *so* many more revealed: https://twitter.com/slightlylate/status/1184958694523453440 …pic.twitter.com/qHj0uyb9lh
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Hrm, curious to see the bug. Either way, you can still eval JSON off-thread using fetch API.
The off thread eval sounds like a big upside, I had no idea XHR forced it to happen on-thread... good to know the next time I use JSON
It's a side-effect of JSON.parse() being synchronous.
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