Anders Hejlsberg

Revert structuredTypeRelatedTo change and fix isUnitLikeType

15

Fixes #51009. Fixes #51041. Ref: https://github.com/microsoft/TypeScript/pull/50735

Enum unification and improvements

23

Since #9407 TypeScript has had two kinds of enum types: _Numeric enum types_ and _literal enum types_ (also known as _union enum types_). Numeric enum types have permitted enum members...

Improve reduction of similar intersections in type inference

10

Fixes #51399.

Fix isUnitLikeType to (again) handle tagged literal types

13

Fixes #51538.

Use `missingType` in `--noUncheckedIndexedAccess` mode

11

This implements what I discuss [here](https://github.com/microsoft/TypeScript/pull/50936#issuecomment-1328262514). I borrwed tests from that PR. Thanks @Andarist. Fixes #43614.

Fix `isGenericReducibleType` to allow HKT technique to function again

30

Fixes #53970.

Add /** @deferred */ comments to deferred callback parameters

6

This PR adds `/** @deferred */` comments to deferred callback parameters in preparation for https://github.com/microsoft/TypeScript/pull/58729.