Deep Copy Decorator

deep-copy-decorator.ts

function DeepCopy() {
  return function(target: any, key: string) {
    let value = target[key];
    return Object.defineProperty(target, key, {
      configurable: true,
      get: () => value,
      set: val => {
        value = JSON.parse(JSON.stringify(val));
      },
    });
  };
}