code: function stringYAML2JSON (doc, compact = false) {
    if (!doc || typeof doc !== 'string') {
      throw new TypeError('Argument must be a string or object, and not empty: ' + doc)
    }
  
    let obj = yaml.safeLoad(doc)
  
    if (!obj || typeof obj !== 'object') {
      throw new TypeError('Argument must be in yaml format: ' + doc)
    }
  
    return JSON.stringify(obj, undefined, compact ? undefined : 2)
  }
docs: Transcode YAML to JSON string.
  
  @param {string} doc
  @param {boolean} [compact]
  @return {string}
  @api public