Least redundant ts class declaration

Question

What is best way to declare classes without multiplicating same keywords multiple times each?What I tried:- basic declaration with type: each property is repeated 4 times- skip type: need to duplicate type declarations in class properties and in constructor- Object.assign: could be best, but breaks types in instances- factory: could be second best, but not available for methodsExample code. It can potentially have many fields, so writing each more than once is biggest obstacle.Perfect solution would be Object.assign, if it worked with types properlytype EntityType = {
    name?: string | null
}

class Entity implements EntityType {
    name

constructor(input: EntityType) {
        this.name = input.name
    }

hello() {
        console.log('hello', this.name)
    }
}

Pacific sand lance · Answer

why not inheritance?class BaseEntity {
  private name: string;

public constructor(name: string) {
    this.name = name;
  }

public hello(): void {
    console.log("hello", this.name);
  }
}

class Entity extends BaseEntity {
  public constructor(name: string) {
    super(name);
  }
}

const entity = new Entity("...");
entity.hello();

Least redundant ts class declaration

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