Klaus Meinhardt

#### Checklist - [x] Fixes: #398 - [x] Fixes: #399 - [x] Added or updated tests / baselines - [ ] Documentation update #### Overview of change

#### Checklist - [x] Fixes: #342 - [ ] Added or updated tests / baselines - [ ] Documentation update #### Overview of change

WIP: use FileSystem for globbing

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#### Checklist - [x] Fixes: #414 - [ ] Added or updated tests / baselines - [x] Documentation update #### Overview of change TODO: * add tests for new CachedFileSystem#isSymbolicLink...

#### Checklist - [x] Fixes: #307 - [x] Added or updated tests / baselines - [x] Documentation update #### Overview of change Uses TypeScript's node factory functions to determine if...

handle ambient class properties

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To support ES class instance fields, TypeScript introduced a new `declare prop: T;` syntax to declare a property on a derived class without using Define semantics to override it. We...

```ts // @experimentalDecorators: true // @emitDecoratorMetadata: true // @filename: a.ts export class C {} // @filename: b.ts import type { C } from "./a"; declare const decorator: ClassDecorator; @decorator export...

https://github.com/microsoft/TypeScript/pull/35200

Add rule to detect unsafe property redeclarations in derived classes

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Ref: https://github.com/Microsoft/TypeScript/issues/31225 Redeclaring a `get`-only property of a base class with a regular property will throw an error at runtime. Redeclaring a `readonly` property of a base class might be...

```ts declare var p: Promise; from(p) // infers 'unknown' .pipe( // infers 'unknown' takeWhile( // infers 'unknown' () => condition, ), ); ``` Should be fixed by #596, though that...

Investigate adding compatibility for ESLint rules

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The TypeScript team is moving towards ESLint because of its performance and obviously bigger ecosystem: https://github.com/Microsoft/TypeScript/issues/29288 This proposes a new plugin module that can load and execute ESLint rules. Because...