Commas aren't the only thing that need similar treatment. For example, Typescript allows a leading | for union types, and for union types split across multiple lines, the result is so much easier to format compared to the equivalent code in, say, Haskell.
this post was submitted on 11 Feb 2024
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TLDR:
Trailing commas for lists allows easier:
- merging of code
- rearranging of items in the list.
SQL needs more trailing commas so fucking badly.