ruff/crates/ty/docs
Carl Meyer d098118e37
[ty] disable division-by-zero by default (#18220)
## Summary

I think `division-by-zero` is a low-value diagnostic in general; most
real division-by-zero errors (especially those that are less obvious to
the human eye) will occur on values typed as `int`, in which case we
don't issue the diagnostic anyway. Mypy and pyright do not emit this
diagnostic.

Currently the diagnostic is prone to false positives because a) we do
not silence it in unreachable code, and b) we do not implement narrowing
of literals from inequality checks. We will probably fix (a) regardless,
but (b) is low priority apart from division-by-zero.

I think we have many more important things to do and should not allow
false positives on a low-value diagnostic to be a distraction. Not
opposed to re-enabling this diagnostic in future when we can prioritize
reducing its false positives.

References https://github.com/astral-sh/ty/issues/443

## Test Plan

Existing tests.
2025-05-20 14:47:56 -04:00
..
.gitattributes [ty] Mark generated files as such in .gitattributes (#18195) 2025-05-19 16:50:48 +02:00
cli.md [ty] fix missing '>' in HTML anchor tags in CLI reference (#18096) 2025-05-14 15:50:35 +00:00
configuration.md Default `src.root` to `['.', '<project_name>']` if the directory exists (#18141) 2025-05-19 18:11:27 +02:00
mypy_primer.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
rules.md [ty] disable division-by-zero by default (#18220) 2025-05-20 14:47:56 -04:00
tracing-flamegraph.png Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00
tracing.md [ty] Minor typo in environment variable name (#17848) 2025-05-05 10:25:48 +00:00