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1. Commits on Jan 16, 2026

   • Prepare tests for `--noImplicitAny` (#62989)

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     DanielRosenwasser

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     Copilot

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2. Commits on Jan 15, 2026

   • Fixed crash related to index type deferral on generic mapped types with name types (#60528)

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     Andarist

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     RyanCavanaugh

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     a586c34View commit details

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   • Assume rootDir is the current configuration directory (#62418)

     sheetalkamat

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     7affa9eView commit details

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   • Handle resolution watching when its dynamic scriptInfo (#62894)

     sheetalkamat

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     4d94ccbView commit details

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   • Correctly split line endings for `// @testOption: value` parsing (#62987)

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     DanielRosenwasser

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     Copilot

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3. Commits on Jan 14, 2026

   • More strictness prep (#62984)

     DanielRosenwasser

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     64d1978View commit details

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4. Commits on Jan 13, 2026

   • Deprecate `--outFile` (#62981)

     RyanCavanaugh

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     631affdView commit details

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   • Discard types that reduce to `never` before discriminating by discriminable items (#62275)

     Andarist

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     7bb5ba3View commit details

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5. Commits on Jan 9, 2026

   • Test updates for strict initialization (#62958)

     DanielRosenwasser

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     f5ccf43View commit details

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   • Fix "never nullish" diagnostic missing expressions wrapped in parentheses (#62789)

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   • Fixed an issue causing spurious "used before being assigned" errors in for of/in loops (#61376)

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     Andarist

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     RyanCavanaugh

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     632479fView commit details

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6. Commits on Dec 28, 2025

   • Fix crash in abstract property checking (#62923)

     ahejlsberg

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     f3770c9View commit details

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7. Commits on Dec 26, 2025

   • Fix crash in mixin checking (#62928)

     ahejlsberg

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     1f5f9f3View commit details

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8. Commits on Dec 19, 2025

   • Fixed crash when adding unreachable code diagnostic in situations with missing nodes (#62914)

     Andarist

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     2dfdbbaView commit details

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9. Commits on Dec 12, 2025

   • Fix typo: MERCHANTABLITY → MERCHANTABILITY (#62891)

     tt-a1i

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     0a07132View commit details

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   • Fix accidental module replacements in tests (#62890)

     jakebailey

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     d7ae3aaView commit details

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   • Deprecate `module` syntax (#62876)

     RyanCavanaugh

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     16b933fView commit details

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10. Commits on Dec 11, 2025

    • Revert "ES2020: fix String.prototype.matchAll type and description" (#62885)

      jakebailey

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      c84cb94View commit details

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    • ES2020: fix String.prototype.matchAll type and description (#62873)

      ljharb

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      bbb5322View commit details

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11. Commits on Dec 10, 2025

    • Improve inference by not considering thisless functions to be context-sensitive (#62243)

      Andarist

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      366da34View commit details

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12. Commits on Dec 9, 2025

    • Allow subpath imports that start with `#/` (#62844)

      magic-akari

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      3b9acaeView commit details

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13. Commits on Dec 8, 2025

    • Include source node inferences in string literal completions deeper in arguments (#56182)

      Andarist

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      69a0879View commit details

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    • Make go to definition go to the constraint's properties for object literals in argument positions (#62361)

      Andarist

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      b2327c0View commit details

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    • Add tests for contextual param type assignment in nested return type inference scenarios (#62189)

      Andarist

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      dafed7fView commit details

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14. Commits on Dec 5, 2025

    • Avoid `silentNeverType` leaking into generator types inferred based on inner generic calls at `yield`s (#62283)

      Andarist

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      38d95c8View commit details

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    • Widen reverse mapped type properties to fix them being treated as EPC-valid sources (#62722)

      Andarist

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      0752278View commit details

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15. Commits on Dec 3, 2025

    • Filter return type inferences by constraint applicability (#58910)

      Andarist

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      28fbc0aView commit details

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16. Commits on Nov 24, 2025

    • Add --ignoreConfig and dont allow specifying files on commandline without it if there is config file present (#62477)

      sheetalkamat

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      669c25cView commit details

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17. Commits on Nov 19, 2025

    • Disallow `[await] using` statements under case/default clauses (#62709)

      Renegade334

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      60e99ecView commit details

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    • Fix unreachable code detection persisting after incremental edits (#62783)

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      Copilot

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      jakebailey

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      486fce7View commit details

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18. Commits on Nov 14, 2025

    • Update error for allowImportingTsExtensions to mention rewriteRelativeImportExtensions (#62557)

      bakkot

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      cc2610fView commit details

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    • Move unreachable checks to checker (#62751)

      jakebailey

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      09e31cfView commit details

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19. Commits on Nov 13, 2025

    • Shrink relationComplexityError test size (#62754)

      jakebailey

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20. Commits on Nov 11, 2025

    • Fixed control flow Analysis of aliased discriminants with parenthesized initializers (#61788)

      Andarist

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      4a957b7View commit details

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21. Commits on Nov 10, 2025

    • fix: `[Symbol.iterator]()` lost on union with `never` (#62661)

      nrainhart

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      48244d8View commit details

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