Not sure but it may be TopoJSON: - https://github.com/topojson/topojson - https:... | Hacker News

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hailkuato on Jan 25, 2023 | parent | context | favorite | on: Show HN: A simple world flags game, my first web d...

Not sure but it may be TopoJSON: - https://github.com/topojson/topojson - https://github.com/topojson/topojson-specification

My guess is that Github just recognizes and supports previewing this particular spec.

nickybuzz on Jan 25, 2023 [–]

This is correct

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