validate.js

const validate = require('json-schema').validate;
const YAML = require('yaml');
const fs = require('fs').promises;

const main = async () => {
  const doc = YAML.parse(await fs.readFile('./doc.yml', { encoding: 'utf-8' }));
  const schema = YAML.parse(await fs.readFile('./schema.yml', { encoding: 'utf-8' }));
  console.log({ doc, schema });
  console.log(validate(doc, schema));
}

main()