Issues

• transform-arrow-functions: an arrow in a parameter default that uses this or arguments throws a ReferenceError

  babel/babel#18332 · Filter by author YevheniiKotyrlo opened on Oct 11, 2026
  2

• False positive TDZ error with tdz: true

  i: needs triage
  babel/babel#18319 · Filter by author joelle-a-dev opened on Oct 7, 2026
  2

• deferredImportEvaluation does not set phase: null on non-deferred imports

  Bug

  babel/babel#18313 · Filter by author nicolo-ribaudo opened on Oct 6, 2026
  4

• [aw] Detection Runs

  agentic-workflows
  babel/babel#18269 · Filter by author github-actions opened on Oct 4, 2026
  2

• [Babel 8] typescript: async arrow with return type annotation inside a conditional expression fails to parse (regression from 7.x)

  i: needs triage
  babel/babel#18264 · Filter by author colinwebber opened on Sep 30, 2026
  3

• [Bug]: for-of member assignment targets a shadowing binding from the loop body

  babel/babel#18253 · Filter by author zloirock opened on Sep 27, 2026

• Decorators throw when TypeScript removes their memoization host field

  i: needs triage
  babel/babel#18223 · Filter by author nyan-left opened on Sep 4, 2026
  3

• transform-block-scoping: closures share a binding when a nested for-loop head has an initializer

  Bug

  babel/babel#18200 · Filter by author ko-success opened on Aug 24, 2026
  2

• sourceType: "unambiguous" handles top-level await forms inconsistently

  Bug

  babel/babel#18198 · Filter by author magic-akari opened on Aug 23, 2026
  3

• transform-object-rest-spread: loose mode drops computed-key assignment when excluded binding is unused

  agentscan:automated-account
  babel/babel#18196 · Filter by author huytdps13400 opened on Aug 22, 2026
  2

• _arrayWithHoles Array.isArray fast path bypasses custom Symbol.iterator on array-backed Proxies — transformed destructuring diverges from native semantics

  babel/babel#18181 · Filter by author smm-h opened on Aug 13, 2026
  3

• No binding for TSDeclarationFunction

  i: needs triage
  babel/babel#18180 · Filter by author coderaiser opened on Aug 10, 2026
  6

• @babel/plugin-transform-typescript error reporting with exported enums

  area: typescript
  Bug

  babel/babel#18156 · Filter by author sgjohnston opened on Jul 30, 2026
  2

• Deprecate renamed npm packages

  babel/babel#18132 · Filter by author github-actions opened on Jul 15, 2026
  

• SyntaxError on generic arrow function assignment

  i: needs triage
  babel/babel#18114 · Filter by author fbessou opened on Jul 2, 2026
  6

• @babel/plugin-transform-runtime v7 to v8 migration

  i: needs triage
  Suggestion

  babel/babel#18101 · Filter by author oliviertassinari opened on Jun 24, 2026
  1

• babel/preset-env - erroring out when bugfixes is true puts third-party software in an unresolvable situation

  i: needs triage
  babel/babel#18096 · Filter by author Sidnioulz opened on Jun 23, 2026
  7

• Issues encountered when converting babel to ES5 syntax

  i: needs triage
  babel/babel#17966 · Filter by author qq185863818 opened on May 1, 2026
  4

• @babel/preset-typescript does not (fully) respect verbatimModuleSyntax from tsconfig.json

  area: typescript
  Question

  babel/babel#17843 · Filter by author hkleungai opened on Feb 28, 2026
  5

• Remove @babel/plugin-transform-flow-comments

  Suggestion

  babel/babel#17812 · Filter by author liuxingbaoyu opened on Feb 19, 2026
  1

• HTML Entities-encoded whitespace gets trimmed in JSX

  area: jsx
  Bug

  babel/babel#17683 · Filter by author webstrand opened on Dec 22, 2025
  1

• Switch from gensync to quansync

  i: needs triage
  Suggestion

  babel/babel#17648 · Filter by author sxzz opened on Dec 9, 2025
  1

• Running path.evaluate() on "maliciously crafted code" causes a crash

  i: needs triage
  babel/babel#17644 · Filter by author enbyte opened on Dec 8, 2025
  1

• Remove opts argument from traverseFast

  i: needs triage
  Suggestion

  babel/babel#17577 · Filter by author fisker opened on Oct 28, 2025
  4

• Export generate from @babel/core

  i: needs triage
  Suggestion

  babel/babel#17552 · Filter by author regseb opened on Oct 18, 2025
  1