How do you assess your skills in working with TypeScript and your proficiency level in this language?

I am well acquainted with TypeScript and use it to ensure type safety in Node.js projects. I can create interfaces, types, use generics, and also work with modules and decorators. I understand the difference between types and interfaces, and I can configure tsconfig for optimal compilation. For example, I can write a function with types:

function greet(name: string): string {
  return `Hello, ${name}!`;
}

I am also familiar with integrating TypeScript with popular frameworks and libraries, and I can work with types from DefinitelyTyped.