There are three commonly used primitives data types in Typescript: boolean, string, and number
string can hold like "Hello, Kishar".
let name : string ="Hello, kishar"
If you try to assign number, it will throw an error.
The next commonly used data type is boolean.
let flag : boolean = true;
If you assign string to flag , it will throw an error
The next common data type is number
let age : number = 44;
You can not assign any other value in this age variable.