Issues

• Consider adding negative Test For Invalid BigInt literals

  tc39/test262#5133 · Filter by author calvinalkan opened on Sep 10, 2026
  1

• Coverage candidates discovered while implementing Generator semantics in an ECMAScript companion language

  tc39/test262#5131 · Filter by author Lcfvs opened on Sep 7, 2026
  2

• Uint8Array.prototype.toHex tests do not test for padding

  tc39/test262#5130 · Filter by author camnwalter opened on Sep 7, 2026

• Can we drop test file contents from Engine tests GitHub artifacts?

  tc39/test262#5127 · Filter by author gibson042 opened on Sep 2, 2026

• Testing plan for Thenable-Curtailment (Safe Promise Resolve)

  tc39/test262#5122 · Filter by author mgaudet opened on Aug 31, 2026
  1

• create AI policy

  group process
  tc39/test262#5115 · Filter by author bakkot opened on Aug 24, 2026
  1

• annexB block-decl-func-skip-arguments contradicts staging/sm block-scoped-functions-annex-b-arguments

  tc39/test262#5113 · Filter by author lahma opened on Aug 20, 2026

• Negative coverage requested for ArrayBuffer methods

  tc39/test262#5064 · Filter by author gibson042 opened on May 27, 2026
  1

• Insufficient coverage for Intl.Locale.prototype.getNumberingSystems()

  tc39/test262#5062 · Filter by author sffc opened on May 26, 2026
  

• Support for asynchronous Garbage Collection in host-defined $262.gc()

  tc39/test262#5029 · Filter by author jcscottiii opened on Apr 15, 2026
  2

• Test plan for deferred re-exports (export defer)

  tc39/test262#5010 · Filter by author caiolima opened on Apr 1, 2026
  1

  

• Clarify the use of 'using' as a variable reference expression in for loop conditions

  tc39/test262#4961 · Filter by author kaleidawave opened on Feb 28, 2026
  2

• Missing tests for yield in finally block of a generator

  tc39/test262#4937 · Filter by author taras opened on Feb 20, 2026
  1

• Probably missing coverage for ECMA-402 ToIntlMathematicalValue

  coverage
  tc39/test262#4933 · Filter by author gibson042 opened on Feb 18, 2026
  2

• Test that -u-ca-iso8601 implies hc-h23

  tc39/test262#4882 · Filter by author hsivonen opened on Jan 21, 2026
  1

• ESM coverage: async parent executing after rejection in different branch of a graph

  tc39/test262#4864 · Filter by author nicolo-ribaudo opened on Jan 14, 2026

• test/staging/sm/Date/non-iso.js should be deleted

  tc39/test262#4788 · Filter by author linusg opened on Dec 15, 2025

• Filename linter always fails on Windows

  tc39/test262#4643 · Filter by author lpardosixtosMs opened on Nov 6, 2025
  1

• Improve error messages from compareArray

  tc39/test262#4595 · Filter by author ptomato opened on Oct 8, 2025

• V8 sync bot: Check why tests moved out of staging were re-synced

  tc39/test262#4580 · Filter by author ptomato opened on Sep 15, 2025

• Possible copy by array test coverage gaps

  tc39/test262#4575 · Filter by author trevorade opened on Sep 10, 2025
  1

• Add linter that rejects bare module specifiers

  tc39/test262#4570 · Filter by author ptomato opened on Sep 2, 2025

• built-ins/RegExp/property-escapes/non-existent-property-value-* tests use invalid quantifiers, not non-existent property values

  tc39/test262#4555 · Filter by author auvred opened on Aug 8, 2025

• Intl.NumberFormat.prototype.format should allow both with/without spaces around numbers

  tc39/test262#4536 · Filter by author Gumichocopengin8 opened on Jul 13, 2025

• Add test for extreme Intl Mathematical Values

  tc39/test262#4527 · Filter by author sffc opened on Jul 2, 2025