Classes & Interfaces

Classes

When there is a group of functions manipulating a group of variables, that is a class.

Are named as nouns, and declared with a PascalCase

A class attributes are treated the same as variables, and methods are the same as functions

Class names should provide the context

class Person {
  age: number;
  firstName: string;


  // bad
  createPerson(input: Person): Person {
    // ...
  }


  // good
  create(input: Person): Person {
    // ...
  }
}

Interfaces

The same rules of classes apply here.

They do not use the I prefix, but rely on the semantic naming convention

Inheritance hierarchy should not be more than 7 layers deep