What are the types of comment in TypeScript?

In TypeScript, comments are primarily of two types: single-line comments and multi-line comments.

1. Single-line comments - These comments start with two forward slashes // and extend to the end of the line. For example:

   typescript
   // This is a single-line comment
   console.log("Hello, World!");
   ``
   
   Single-line comments are typically used for brief explanations or to quickly disable a line of code during debugging.
   

2. Multi-line comments - These comments begin with /* and end with */. They can span multiple lines, making them suitable for detailed explanations or extensive text. For example:

   typescript
   /* This is a multi-line comment
      It can be used for more detailed explanations
      spanning multiple lines */
   console.log("Hello, World!");
   ``
   
   Multi-line comments are commonly used for explaining complex code blocks or providing header comments for code files, such as author, copyright, and other descriptive information.

Using these comments helps developers better understand the functionality and purpose of the code, facilitating team collaboration. In actual work, clear comments are crucial as they not only help others understand your code but also allow you to quickly recall the original thought process and logic when reviewing your own code in the future.