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

Use 'extends' keyword to narrow the value of a generic

typescript - Extending interfaces and hover hints - Stack Overflow

The Mixin Pattern In TypeScript – All You Need To Know Part 2

Extending Interfaces - Scaler Topics

TypeScript: Cheat Sheets

Allow T extends enum generic constraint · Issue #30611 · microsoft/ TypeScript · GitHub

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

TypeScript: What is the difference between type and interface?, by Andrew Courter

Extends a Class will make losing and corrupted types in a child class. · Issue #42541 · microsoft/TypeScript · GitHub

Extends interface and type in typescript