text: class OSRecord {
  	constructor(data) {
  		this.data = data
  		this.score = 0
  	}
  	main(key) {
  		if (typeof this.data[key] != "undefined") {
  			this.main = key
  		} else {
  			throw `Wrong main key: ${key}`
  		}
  	}
  	secondary(key) {
  		if (typeof this.data[key] != "undefined" && this.main != key) {
  			this.secondary = key
  		} else {
  			throw `Wrong secondary key: ${key}`
  		}
  	}
  	private(keys) {
  		keys.forEach(key => {
  			delete this.data[key]
  		})
  	}
  	get keys() {
  		return Object.keys(this.data)
  	}
  	get values() {
  		return Object.values(this.data)
  	}
  }
  module.exports = OSRecord;
  