[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@swc-next/parser (source)	0.4.1 → 0.5.0

---

Release Notes

swc-project/swc-next (@​swc-next/parser)

v0.5.0

Compare Source

🚀 Features

• (parser) [breaking] Add error recovery option (#​1247)
• (minifier) Fold constant expressions in the compression pass (#​1353)

🐛 Bug Fixes

• (parser,semantic) [breaking] Resolve cover grammar from expression nodes (#​1150)
• (allocator) Preserve ZST iterator pointer validity (#​1224)
• (allocator) Reject overflowing drain bounds and ZST lengths (#​1225)
• (allocator) Correct WTF-8 prefix checks and UTF-16 size hints (#​1226)
• (allocator) [breaking] Correct collection and splice auto traits (#​1227)
• (parser) Repair diagnostic assertions in lexer recovery test (#​1240)
• (allocator) Check aggregate slice lengths before copying (#​1243)
• (ast) Initialize big-endian extra data through allocation pointer (#​1245)
• (allocator) Preserve drain filter invariants after panic (#​1244)
• (type-strip) Erase abstract method modifiers (#​1283)
• (type-strip) Preserve question marks in parameter initializers (#​1282)
• (parser) Accept commas after class index signatures (#​1285)
• (parser) Correct diagnostic spans and escape descriptions (#​1351)
• (parser) Keep comparisons when a reserved type argument can start an expression (#​1284)
• (ci) Compare JavaScript benchmarks against PR merge (#​1382)
• (allocator) Encode WTF-8 code points without referencing uninitialized capacity (#​1388)
• (parser) Correct diagnostic spans (#​1405)
• (parser) Improve diagnostic messages and numeric separator spans (#​1406)
• (codegen) Improve minified output (#​1260)

🚜 Refactor

• (minifier) Move compression to TraverseMut hooks (#​1317)

📚 Documentation

• Clarify upstream code provenance (#​1237)
• Add dry-run approval and reference policy to pr-creator skill (#​1248)
• (skills) Rename optimization skill and use paired wall time (#​1397)

⚡ Performance

• (parser) Avoid temporary allocations for parenthesized expressions (#​1160)
• (parser) Avoid temporary allocations for arrow parameters (#​1161)
• (parser) Skip redundant line break checks in block comments (#​1163)
• (parser) Reuse the escaped string decoding buffer (#​1162)
• (parser) Reuse export specifier tag storage (#​1168)
• (parser) Reserve scratch buffer growth in larger batches (#​1169)
• (parser) Avoid temporary allocations for async call covers (#​1189)
• (parser) Reserve capacity when removing numeric separators (#​1190)
• (parser) Consume { before mapped-type lookahead (#​1179)
• (parser) Give string decoding scratch space room to grow (#​1236)
• (parser) Avoid rescanning identifier-led tuple elements (#​1174)
• (parser) Reuse the return type identifier prefix (#​1177)
• (bindings) Use mimalloc for core and parser (#​1182)
• (allocator) Streamline ArenaVec truncate and push (#​1239)
• (allocator) Reuse checked length in ArenaVec push (#​1241)
• (parser) Strip numeric separators at the byte level (#​1246)
• (parser) Skip lookahead for ordinary statement starts (#​1261)
• (parser) Reuse fast token scanning during lookahead (#​1262)
• (lexer) Share fast token scanning after line breaks (#​1266)
• (lexer) Handle common character escapes without slow scanning (#​1269)
• (parser) Decode ASCII identity escapes without Unicode checks (#​1270)
• (parser) Dispatch common primary expressions directly (#​1271)
• (parser) Fast-path ordinary object property names (#​1272)
• (parser) Bypass scratch storage for single variable declarations (#​1280)
• (parser) Convert single-digit decimal literals directly (#​1278)
• (parser) Defer destructuring checks until needed (#​1281)
• (parser) Specialize postfix parsing for grammar contexts (#​1279)
• (parser) Inline call expression parsing (#​1275)
• (parser) Inline semicolon consumption (#​1276)
• (parser) Inline expected token consumption (#​1277)
• (parser) Avoid repeated const enum lookahead (#​1274)
• (parser) Keep fast-path token flags out of lexer state (#​1302)
• (parser) Scan JSX tag tokens with the shared fast scanners (#​1303)
• (parser) Classify the identifier end byte during the ASCII scan (#​1304)
• (parser) Derive comment line breaks from the token flag (#​1311)
• (parser) Tail-call identifier and operator scans from try_next_token (#​1312)
• (parser) Store the token tag in the low bits of the packed token (#​1313)
• (parser) Bound identifier batches by their end position (#​1344)
• (parser) Read the previous token tag from the lexer target (#​1346)
• (parser) Scan ordinary comments in the inline trivia loop (#​1347)
• (parser) Skip lookahead peeks at JSX element starts (#​1348)
• (parser) Check type continuations before entering their parsers (#​1349)
• (parser) Test identifier bytes in pairs during the ASCII scan (#​1355)
• (parser) Scan strings without escapes on the token fast path (#​1357)
• (parser) End the Pratt loop before line-terminator checks (#​1358)
• (parser) Inline statement dispatch into its callers (#​1359)
• (parser) Read closing-tag slashes on the JSX tag fast path (#​1360)
• (ast) Mark rare TraverseMut paths cold (#​1334)
• (ast) Dispatch TraverseMut unions without checks (#​1336)
• (ast) Pass untyped walk results through TraverseMut dispatch (#​1342)
• (ast) Pass TraverseMut child results through continuing exit hooks (#​1370)
• (parser) Emit single-byte operators from the fast token path (#​1373)
• (transformer) Skip statement injector lookups when nothing is queued (#​1375)
• (parser) Fold the lexer mode check into the fast-path bounds check (#​1341)
• (parser) Look up keywords in a perfect hash table (#​1402)

⚙️ Miscellaneous Tasks

• Release v0.4.1 (#​1157)
• Prepare Anthropic OSS Scanner audits (#​1233)
• (parser) Add file corpus profiling example (#​1273)
• Expose repository skills to Claude Code (#​1354)
• (skills) Stack only dependent gungraun-optimize PRs (#​1368)
• (bench) Add paired wall-time benchmarks on x86_64 (#​1383)
• (bench) Alternate the base/head run order in paired wall-time rounds (#​1396)
• (bench) Merge Gungraun and paired wall-time into one workflow (#​1400)
• (bench) Run Gungraun and wall time in separate jobs (#​1401)
• Gate crate publishing on successful builds (#​1408)
• Use Clang for GNU cross builds (#​1409)

◀️ Revert

• (parser) Test identifier bytes in pairs during the ASCII scan (#​1389)
• (codegen) Inline identifier printing and skip duplicate separator check (#​1390)
• (parser) Fold the lexer mode check into the fast-path bounds check (#​1398)

---

Configuration

📅 Schedule: (in timezone Asia/Shanghai)

• Branch creation
  • Between 12:00 AM and 03:59 AM, on day 1 and 15 of the month (* 0-3 1,15 * *)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[cloudflare-workers-and-pages]

Deploying rstack-cli with    Cloudflare Pages

Latest commit:	2467dd9
Status:	✅  Deploy successful!
Preview URL:	https://10a05b38.rstack-cli.pages.dev
Branch Preview URL:	https://renovate-swc-next-parser-0-x.rstack-cli.pages.dev

View logs