ESLint v9.8.0 released

Highlights

• Ignoring the directory where ESLint runs is no longer possible. Previously, a global ignores pattern like "/" would ignore the entire base directory.
• The feature flags specification has been updated to forbid the usage of inactive flags.

Features

• 13d0bd3 feat: Add and use SourceCode#getLoc/getRange (#18703) (Nicholas C. Zakas)

Bug Fixes

• ab0ff27 fix: Throw error when invalid flags passed (#18705) (Nicholas C. Zakas)
• 70dc803 fix: basePath directory can never be ignored (#18711) (Milos Djermanovic)

Documentation

• 282df1a docs: Add system theme option (#18617) (Amaresh S M)
• 53b1ff0 docs: Debug config docs (#18698) (Nicholas C. Zakas)
• a7016a5 docs: fix search input stylings (#18682) (Amaresh S M)

Build Related

• 4514424 build: Enable JSON linting (#18681) (Nicholas C. Zakas)

Chores

• deee448 chore: upgrade to @eslint/js@9.8.0 (#18720) (Francesco Trotta)
• 4aaf2b3 chore: package.json update for @eslint/js release (Jenkins)
• 8e1a627 chore: update dependency @eslint/core to ^0.2.0 (#18700) (renovate[bot])