As Type

as is a type assertion in TypeScript that allows you to tell the compiler to treat a value as a specific type, regardless of its inferred type.

For example:

let num = 42;
let str = num as string; 

// str is now of type string, even though num is a number

It’s important to note that type assertions do not change the runtime type of a value, and do not cause any type of conversion. They simply provide a way for the programmer to override the type inference performed by the compiler.