Type 'string' is not assignable to type 'T extends true ? string

TypeScript Extend Type How does TypeScript Extend Type work?

typescript - Extending interfaces and hover hints - Stack Overflow

Extending Interfaces - Scaler Topics

TypeScript: Cheat Sheets

TypeScript's Powerful Type Inference with Conditional Types and

in TypeScript, how can I create an extensible generic type with children of the same type, with a default type? - Stack Overflow

Use generics to dynamically specify the number, and type, of arguments to functions

How to extend types in Typescript

Properties P in generic type U that extends type T should allow use of type T[P] · Issue #13547 · microsoft/TypeScript · GitHub

Typescript - vscode-docs1