@JsonSerialize() and @JsonDeserialize() example

JsonSerializeAndJsonDeserializeExample.ts

import { JsonClassType, JsonProperty, ObjectMapper, JsonSerialize, JsonDeserialize } from 'jackson-js';

class DateSerializer {
  static serializeDate(date, context): any {
    return {
      year: date.getFullYear(),
      month: date.getMonth() + 1,
      day: date.getDate(),
      formatted: date.toLocaleDateString()
    };
  }
  static deserializeDate(dateObj, context): Date {
    return new Date(dateObj.formatted);
  }
}

class Book {
  @JsonProperty() @JsonClassType({type: () => [Number]})
  id: number;
  @JsonProperty() @JsonClassType({type: () => [String]})
  name: string;

  @JsonProperty() @JsonClassType({type: () => [Date]})
  @JsonSerialize({using: DateSerializer.serializeDate})
  @JsonDeserialize({using: DateSerializer.deserializeDate})
  date: Date;

  constructor(id: number, name: string, @JsonClassType({type: () => [Date]}) date: Date) {
    this.id = id;
    this.name = name;
    this.date = date;
  }
}

const book = new Book(1, 'Game Of Thrones', new Date(2012, 11, 4));
const objectMapper = new ObjectMapper();
const jsonData = objectMapper.stringify<Book>(book);
console.log(jsonData);
// {"id":1,"name":"Game Of Thrones","date":{"year":2012,"month":12,"day":4,"formatted":"4/12/2012"}}
const bookParsed = objectMapper.parse<Book>(jsonData, {mainCreator: () => [Book]});
console.log(bookParsed);
/*
Book {
  id: 1,
  name: 'Game Of Thrones',
  date: 2012-04-11T22:00:00.000Z
}
*/