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While I like the concept, the side-effect pattern might be difficult for the average developer to understand (without fp-pack knowledge) in a shared codebase:

https://github.com/superlucky84/fp-pack?tab=readme-ov-file#s...

Still, this approach is very useful for most business logic, too bad most programming languages don't provide a nice syntax for this.

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That’s a fair point, and I agree.

The SideEffect pattern is intentionally explicit, so without fp-pack context it can look unfamiliar at first. The trade-off is making early exits visible in the code, rather than hiding them in conditionals or exceptions.

In practice, most code stays in plain pipe/pipeAsync. SideEffect is meant for a small number of boundary cases only.

And I agree — better language-level syntax for this kind of pattern would make it much easier to adopt.

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