Typescript objects serialization?

Question

Are there any means for JSON serialization/deserialization of Typescript objects so that they don\'t loose type information? Simple JSON.parse(JSON.stringify) has t

Answer 1

First, you need to create an interface of your source entity which you receive from the API as JSON:

interface UserEntity {
  name: string,
  age: number,
  country_code: string 
};

Second implement your model with constructor where you can customize (camelize) some field names:

  class User  { 
    constructor({ name, age, country_code: countryCode }: UserEntity) {
      Object.assign(this, { name, age, countryCode });
    }
  }

Last create instance of your User model using JS object jsonUser"

    const jsonUser = {name: 'Ted', age: 2, country_code: 'US'};

    const userInstance = new User(jsonUser);
    
    console.log({ userInstance })

Here is the link to playground