Typescript interfaces – missing properties

May 28, 2023

I have these two interfaces:

export interface interface1 {
   id: number;
   name: string;
   description: string;
   isActive: boolean; 
   address?: {};
}
export interface interface2 extends interface1 {
   route: string;
}

When I implement interface2 like this:

const const1: interface2 = [
   id: 1,
   name: 'abc',
   description: 'desc',
   isActive: true,
   route: '/'
]

While compiling I am getting all properties listed as missing. Not sure what I am doing wrong. I checked this playground it seems working fine:
Example

>Solution :

It seems that there is a syntax error in the implementation of const1. Instead of using square brackets, you should use curly braces to define an object literal.

const const1: interface2 = { id: 1, name: 'abc', description: 'desc', isActive: true, route: '/' };