@JsonCreator() example

JsonCreatorExample.ts

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

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

  constructor(id: number, name: string, department: string) {
    this.id = id;
    this.name = name;
    this.department = department;
  }

  @JsonCreator()
  static toEmployee(id: number,
    @JsonProperty({value: 'empName'}) name: string,
    @JsonProperty({value: 'empDept'}) department: string): Employee {
    return new Employee(id, name, department);
  }
}

const jsonData = '{"id": 1,"empName": "Chris","empDept": "Admin"}';
const objectMapper = new ObjectMapper();
const employee = objectMapper.parse<Employee>(jsonData, {mainCreator: () => [Employee]});
console.log(employee);
/*
Employee {
  id: 1,
  name: 'Chris',
  department: 'Admin'
}
*/