Custom types not working as expected

[pascalre]

I want to create a custom js-yaml schema, which supports Homeassistant tags. For that I developed homeassistant-js-yaml-schema.
Unfortunately something is not working as expected, leading to this behavior. The schema reads the tags, but it adds too much meta information.

I noticed the same behavior in the provided example custom_types.js. I used exact the same file custom_types.js, loaded exact the same file custom_types.yml and dumped it. The result differs and also adds too much meta information. For me it looks like the represent function is ignored.

See my test here:

const jsyaml = require('js-yaml');
const { SPACE_SCHEMA } = require('../src/custom_types');

test('should load yaml with SPACE_SCHEMA', () => {
  const file = `
subject: Custom types in JS-YAML
spaces:
- !space
  height: 1000
  width: 1000
  points:
  - !point [ 10, 43, 23 ]
  - !point [ 165, 0, 50 ]
  - !point [ 100, 100, 100 ]

- !space
  height: 64
  width: 128
  points:
  - !point [ 12, 43, 0 ]
  - !point [ 1, 4, 90 ]

- !space # An empty space"
`;

  const doc = jsyaml.load(file, { schema: SPACE_SCHEMA });
  const result = jsyaml.dump(doc);
  expect(result).toBe(doc);
});

The result is

subject: Custom types in JS-YAML
    spaces:
      - klass: Space
        height: 1000
        width: 1000
        points:
          - klass: Point
            x: 10
            'y': 43
            z: 23
          - klass: Point
            x: 165
            'y': 0
            z: 50
          - klass: Point
            x: 100
            'y': 100
            z: 100
      - klass: Space
        height: 64
        width: 128
        points:
          - klass: Point
            x: 12
            'y': 43
            z: 0
          - klass: Point
            x: 1
            'y': 4
            z: 90
      - klass: Space
        height: 0
        width: 0
        points: []