Does not work with sealed objects

[nhardy]

See ES6 Code below:

class Model {
  constructor(props) {
    this.init();

    Object.seal(this);

    if (props) {
      deepAssign(this, props);
    }
  }

  init() {
    Object.defineProperties(this, {
      one: {
        value: null,
        writable: true,
        enumerable: true
      },
      two: {
        value: {},
        writable: true,
        enumerable: true
      }
    });
    Object.defineProperties(this.two, {
      three: {
        value: null,
        writable: true,
        enumerable: true
      },
      four: {
        value: null,
        writable: true,
        enumerable: true
      }
    });
  }
}

console.log(new Model({one: 'foo', two: {three: 'bar', four: 'baz', five: 'shouldn\'t appear'}, six: 'won\'t appear'}));

[sindresorhus]

What exactly is not working? What did you expect? Please provide a simpler example, preferably a failing test.

[schnittstabil]

@nhardy Your code works exactly as intended:

1. Object.seal preventing six from being added
2. Object.seal marking two as non-configurable, but that does not mean you can't add a new property to two (see Object.defineProperty for details about configurable)