TYPESCRIPT

constructor interface typescript

export interface IBaseEntity {
  id: string

}

export interface IBaseEntityClass {
    new(_id?: string, _data?: any): IBaseEntity
}


class Test implements IBaseEntity {
  id: string
  constructor(_id?: string, _data?: any) {
    this.id = 'MOCK_ID'
  }
}
let baseEntityClass: IBaseEntityClass = Test; // The class test fulfills the contract of IBaseEntityClass

new baseEntityClass("", {}) // constructing through IBaseEntityClass interface

typescript class interface

interface IPerson {
  name: string
  age: number
  hobby?: string[]
}

class Person implements IPerson {
  name: string
  age: number
  hobby?: string[]

  constructor(name: string, age: number, hobby: string[]) {
    this.name = name
    this.age = age
    this.hobby = hobby
  }
}

const output = new Person('john doe', 23, ['swimming', 'traveling', 'badminton'])
console.log(output)