Guard against stack overflow on deeply nested input

[bartveneman]

Summary

• print_list, print_selector_list, print_block, print_rule and print_atrule all recurse with the input's nesting depth and had no guard. Confirmed a crash with ~2,500 nested rules or deeply nested calc()/parentheses — an opaque, unhandled RangeError: Maximum call stack size exceeded.
• Added an explicit recursion-depth counter (enter_recursion, capped at 250, tracked via try/finally so it always unwinds correctly on both success and error paths) so the printer throws a clear format-css:-branded RangeError instead.
• For even deeper input (~2,000+ levels), the underlying parse() call from @projectwallace/css-parser can itself exceed the call stack before our own guard ever runs, since parsing happens first. Wrapped that call so any RangeError from parsing is normalized into the same kind of clear, catchable error rather than leaking the dependency's raw crash.
• Verified via the CLI that a pathological input now exits with a clean one-line error message instead of a stack trace.

Test plan

• vitest run — all 258 tests pass (added 4 new cases covering deep rule nesting, deep paren nesting, recovery after a rejected input, and that realistic nesting depths still format fine)
• tsc --noEmit — no type errors
• oxlint / oxfmt --check — clean
• Manually verified via the CLI that deeply nested input now produces a one-line error instead of a stack trace

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Generated by Claude Code

[github-actions]

⚠️ Duplicate Dependencies (found: 22, threshold: 1)

📦 Package	📋 Versions
@babel/parser	2 versions root@ @vitest/coverage-v8@4.1.9 magicast@0.5.3 @babel/parser@7.29.7 root@ tsdown@0.22.3 rolldown-plugin-dts@0.26.0 @babel/generator@8.0.0 @babel/parser@8.0.0
@babel/types	2 versions root@ @vitest/coverage-v8@4.1.9 magicast@0.5.3 @babel/parser@7.29.7 @babel/types@7.29.7 root@ tsdown@0.22.3 rolldown-plugin-dts@0.26.0 @babel/generator@8.0.0 @babel/parser@8.0.0 @babel/types@8.0.0
@babel/helper-string-parser	2 versions root@ @vitest/coverage-v8@4.1.9 magicast@0.5.3 @babel/parser@7.29.7 @babel/types@7.29.7 @babel/helper-string-parser@7.29.7 root@ tsdown@0.22.3 ... @babel/parser@8.0.0 @babel/types@8.0.0 @babel/helper-string-parser@8.0.0
@babel/helper-validator-identifier	2 versions root@ @vitest/coverage-v8@4.1.9 magicast@0.5.3 @babel/parser@7.29.7 @babel/types@7.29.7 @babel/helper-validator-identifier@7.29.7 root@ tsdown@0.22.3 ... @babel/parser@8.0.0 @babel/types@8.0.0 @babel/helper-validator-identifier@8.0.2
@rolldown/binding-wasm32-wasi	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-wasm32-wasi@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-wasm32-wasi@1.1.5
picomatch	2 versions root@ @vitest/coverage-v8@4.1.9 ... tinyglobby@0.2.17 fdir@6.5.0 picomatch@4.0.4 root@ @vitest/coverage-v8@4.1.9 vitest@4.1.9 @vitest/mocker@4.1.9 vite@8.1.4 picomatch@4.0.5
rolldown	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 root@ @vitest/coverage-v8@4.1.9 vitest@4.1.9 @vitest/mocker@4.1.9 vite@8.1.4 rolldown@1.1.5
@oxc-project/types	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @oxc-project/types@0.137.0 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @oxc-project/types@0.139.0
@rolldown/binding-android-arm64	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-android-arm64@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-android-arm64@1.1.5
@rolldown/binding-darwin-arm64	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-darwin-arm64@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-darwin-arm64@1.1.5
@rolldown/binding-darwin-x64	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-darwin-x64@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-darwin-x64@1.1.5
@rolldown/binding-freebsd-x64	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-freebsd-x64@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-freebsd-x64@1.1.5
@rolldown/binding-linux-arm-gnueabihf	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-linux-arm-gnueabihf@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-linux-arm-gnueabihf@1.1.5
@rolldown/binding-linux-arm64-gnu	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-linux-arm64-gnu@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-linux-arm64-gnu@1.1.5
@rolldown/binding-linux-arm64-musl	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-linux-arm64-musl@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-linux-arm64-musl@1.1.5
@rolldown/binding-linux-ppc64-gnu	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-linux-ppc64-gnu@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-linux-ppc64-gnu@1.1.5
@rolldown/binding-linux-s390x-gnu	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-linux-s390x-gnu@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-linux-s390x-gnu@1.1.5
@rolldown/binding-linux-x64-gnu	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-linux-x64-gnu@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-linux-x64-gnu@1.1.5
@rolldown/binding-linux-x64-musl	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-linux-x64-musl@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-linux-x64-musl@1.1.5
@rolldown/binding-openharmony-arm64	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-openharmony-arm64@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-openharmony-arm64@1.1.5
@rolldown/binding-win32-arm64-msvc	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-win32-arm64-msvc@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-win32-arm64-msvc@1.1.5
@rolldown/binding-win32-x64-msvc	2 versions root@ tsdown@0.22.3 rolldown@1.1.3 @rolldown/binding-win32-x64-msvc@1.1.3 root@ @vitest/coverage-v8@4.1.9 ... vite@8.1.4 rolldown@1.1.5 @rolldown/binding-win32-x64-msvc@1.1.5

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⚠️ Package Size Increase

📦 Package	📏 Base Size	📏 Source Size	📈 Size Change
@projectwallace/format-css	8.6 kB	8.8 kB	+236 B