A type refers to a class of data and the operations permitted on that class of data. The following built-in types are supported for the @boardname@:

• Number: an integer number (32-bit signed)
• String: a sequence of characters
• Boolean: true or false

• Array: a list of items of a primitive type

• Function: code you can reuse anywhere in a program

TypeScript allows you to create user-defined classes of data.

class Foo {
    public bar: number;
    baz() {

    }
}