Issues

• wasi: preview 2 smoke cases trap on unregistered layouts (classes, collections, iterators)

  PerryTS/perry#13354 · Filter by author jgoux opened on Oct 27, 2026
  1

• Tracking: claude-code compiled with Perry

  bugperformance
  PerryTS/perry#13308 · Filter by author TheHypnoo opened on Oct 26, 2026

• Tracking: tests and gates red on main

  bug
  PerryTS/perry#13307 · Filter by author TheHypnoo opened on Oct 26, 2026

• Tracking: WebSocket and http upgrade correctness

  bug
  PerryTS/perry#13306 · Filter by author TheHypnoo opened on Oct 26, 2026

• Tracking: builtin prototype and constructor parity

  parity
  PerryTS/perry#13305 · Filter by author TheHypnoo opened on Oct 26, 2026

• Tracking: accepted fix-forward regressions to win back

  performance
  PerryTS/perry#13304 · Filter by author TheHypnoo opened on Oct 26, 2026

• Tracking: GC pacing, promotion and old-generation retention

  performance
  PerryTS/perry#13303 · Filter by author TheHypnoo opened on Oct 26, 2026

• Tracking: RegExp performance

  performance
  PerryTS/perry#13302 · Filter by author TheHypnoo opened on Oct 26, 2026

• Feature: --target wasip1, a WASI 0.1 core-module output next to --target wasi

  enhancement
  PerryTS/perry#13259 · Filter by author jgoux opened on Oct 25, 2026

• perf(regex): capture-heavy exec is 15.9x Node — GC accounting is as large a share as the matcher

  performance
  PerryTS/perry#13139 · Filter by author proggeramlug opened on Oct 23, 2026
  2

• perry-runtime test every_net_transport_sabotage_makes_its_witness_red is flaky: the plan_check sabotage sometimes leaves witness n9 green

  bugtooling
  PerryTS/perry#12994 · Filter by author jgoux opened on Oct 21, 2026

• Contributor docs cannot produce a working from-source build: CONTRIBUTING contradicts rust-toolchain.toml, Dockerfile.dev is at rust:1.75, and the gc-effects sidecar step is undocumented

  documentation
  PerryTS/perry#12979 · Filter by author deanmarano opened on Oct 21, 2026

• Constraint check compares a type parameter's TypeVar, not its instantiation: nested generic calls warn on code tsc accepts

  bug
  PerryTS/perry#12978 · Filter by author deanmarano opened on Oct 21, 2026

• perry-stdlib lib test thread_exit_releases_the_threads_vm_script_entry reads a dead thread's pointer and crashes the test binary

  bug
  PerryTS/perry#12959 · Filter by author jgoux opened on Oct 21, 2026
  1

• Function-local class extending Error: calling a method on an instance prints {} instead of the method result

  bugparity
  PerryTS/perry#12958 · Filter by author jgoux opened on Oct 21, 2026
  1

• Subclass declared inside a function: method override is ignored when the class escapes via return and is instantiated outside

  bugparity
  PerryTS/perry#12957 · Filter by author jgoux opened on Oct 21, 2026
  1

• stream/promises pipeline() over a PassThrough that a Readable was .pipe()d into sees 0 chunks

  bugparity
  PerryTS/perry#12956 · Filter by author jgoux opened on Oct 21, 2026

• fetch(): with keep-alive and a small response, every call keeps a Web Streams handle id; the process aborts after ~1M calls

  bug
  PerryTS/perry#12862 · Filter by author lukas-kuna opened on Oct 18, 2026

• Inherited arrow-function class field calling this.<other field>() throws 'value is not a function' when the base class is in another module

  bug
  PerryTS/perry#12818 · Filter by author lagz0ne opened on Oct 18, 2026
  1

• gc-effects: sidecar for the runtime copy inside the Android/watchOS/visionOS UI library

  tooling
  PerryTS/perry#12744 · Filter by author proggeramlug opened on Oct 17, 2026
  1

• ArrayPush(N): local not in scope when pushing onto a const array initialised with an object literal (blocks TanStack Router SSR)

  bug
  PerryTS/perry#12742 · Filter by author kaitk opened on Oct 17, 2026

• fastify +0.62% after optimization round 1: by-name reads on family objects take generic slow paths

  performance
  PerryTS/perry#12730 · Filter by author proggeramlug opened on Oct 17, 2026

• util.MIMEParams keeps _entries by name with attributes in a side table

  bugparity
  PerryTS/perry#12727 · Filter by author proggeramlug opened on Oct 17, 2026

• class X extends URLSearchParams instances carry a by-name __perry_usp_backing__ key

  bugparity
  PerryTS/perry#12726 · Filter by author proggeramlug opened on Oct 17, 2026

• URLSearchParams.prototype differs from node: enumerability, key order, extra toLocaleString/valueOf, missing Symbol.iterator

  bugparity
  PerryTS/perry#12725 · Filter by author proggeramlug opened on Oct 17, 2026