Extend Record For Free

Record classes are special classes that act as transparent carriers for immutable data. They are immutable classes (all fields are final) and are implicitly final classes, which means they can't be extended.

Key Differences Between TypeScript Objects And Records Keys: TypeScript Objects use string keys, while Records can use string or numeric keys. Values: TypeScript Objects can contain any data type as a value, while Records are typically used to store objects with a specific structure.

A record can inherit from another record. However, a record can't inherit from a class, and a class can't inherit from a record.

The main differences between TypeScript Record and Map are: Type restrictions: TypeScript Record is designed to store a fixed set of keys with values of a specific type, whereas Map can store any type of key and value.

In TypeScript, the Record type simply allows us to define dictionaries, also referred to as key-value pairs, with a fixed type for the keys and a fixed type for the values. In other words, the Record type lets us define the type of a dictionary; that is, the names and types of its keys.

A Record class is final, so we can't extend it.

The record type is a data type that you use to treat several different pieces of data as one unit, for example, name and phone number. Each of these units is called a variable of record type. Each piece of data is called an attribute. An attribute can be a simple data type, another record type, or an array.