json nested refs

const validator = require('is-my-json-valid');

const schema = {
  required: true,
  type: 'object',
  properties: {
    id: { type: 'string', required: true },
    combined: {
      required: false,
      type: 'array',
      items: { $ref: '#product' },
    },
  },
  additionalProperties: false,
};

const opts = {
  greedy: true,
  verbose: true,
  schemas: {
    product: schema,
  },
};

const a = {
  id: 'a',
}

const b = {
  id: 'b',
  combined: [a]
}

const c = {
  id: 'c',
  combined: [b, a]
}

const validate = validator(schema, opts);

validate(a)
console.log('a: ', validate.errors)
validate(b)
console.log('b: ', validate.errors)
validate(c)
console.log('c: ', validate.errors)