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Add a new type of class declaration to support mixins

7

### 🔍 Search Terms "mixin", "InstanceType", "typeof", "class" ### ✅ Viability Checklist - [x] This wouldn't be a breaking change in existing TypeScript/JavaScript code - [x] This wouldn't change the...

AFatNiBBa

Additive inverse of number literals

1

## Search Terms Using unary minus on variable that is of number-literal type. Negative number literals. ## Suggestion This is a specific case of #26382. My proposal is simply that...

cshaa

Provide string completions for `in` keyword checks

1

closes https://github.com/microsoft/TypeScript/issues/52736

Andarist

TypeScript does not recognize unreachable code after a method returning never is called outside of its defining scope

2

Does this issue occur when all extensions are disabled?: Yes - VS Code Version: 1.89.1 - OS Version: All To Reproduce: ``` class SimpleThrower { public throwError(): never { throw...

dkfdkdodkms

Fixed member completions for `NoInfer`-wrapped unions

2

fixes https://github.com/microsoft/TypeScript/issues/60253

Andarist

Feat/jsdoc experimental tag

4

Fixes #56808

tristonarmstrong

Narrow generic conditional and indexed access return types when checking return statements, no conditional expression support

3

A version of #56941 without any of the extra stuff for checking conditional expressions.

gabritto

Let isolated declarations fixer add toplevel imports more

2

The fixer has a tendency to create inline imports, whereas toplevel imports are almost always more readable. And the code already exists, it's just a matter of using it. I...

benjaminjkraft

### 🔎 Search Terms isolatedDeclarations autofix fix imports ### 🕗 Version & Regression Information This is the behavior in every version I tried, and I reviewed the FAQ for entries...

benjaminjkraft

Set impliedNodeFormat based on redirectedReference options

20

Fixes #57553

andrewbranch