Angular Design Patterns

Interface redefinitions

TypeScript allows programmers to redefine interfaces, using the same name multiple times. Then, any implementation of said interface inherits all the definitions of all the interfaces. The official reason for this is to allow users to enhance the JavaScript interface without having to change the types of their object throughout their code. While I understand the intent of such a feature, I foresee way too much hassle in its use. Let's have a look at an example feature on the Microsoft website:

interface ICustomerMerge 
{ 
   MiddleName: string; 
} 
interface ICustomerMerge 
{ 
   Id: number; 
} 
class CustomerMerge implements ICustomerMerge 
{ 
   id: number; 
   MiddleName: string; 
} 

Leaving aside the fact that the naming conventions are ...