Adds a custom oxlint rule renovate/v8-ignore-no-count that flags the
count form '/* v8 ignore next <N> */'. The count is not honored by
vitest's ast-v8-to-istanbul hint parser, which captures only the
keyword (if/else/next/file); 'next' always exempts exactly the next
AST node. Trailing counts therefore suggest a line range that is never
applied and mislead readers.
The rule is autofixable (drops the count, preserving actual behavior)
and has been applied to all existing occurrences.
Enable the unicorn/prefer-at rule as error in .oxlintrc.json and fix all
43 pre-existing violations (arr[arr.length - 1] -> arr.at(-1)) via oxlint
autofix. Where .at() widened the type to T | undefined, non-null
assertions were added at sites where surrounding logic guarantees the
element exists (length guards, split results), preserving the original
runtime behavior and typing.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Sebastian Poxhofer