What is the never type in TypeScript and how does it differ from other types?

The never type in TypeScript is used to denote values that never occur. It is a type for functions that never return a value (for example, they throw an error or run infinitely), or for variables that cannot have a value.

Differences from other types:

• Other types describe possible values, while never indicates the absence of values.
• never is a subtype of all types, but no type is a subtype of never (except never itself).

Example:

function error(message: string): never {
  throw new Error(message);
}

function infiniteLoop(): never {
  while(true) {}
}