Method _getFact

src/almanac.js:66–68

* Retrieve fact by id, raising an exception if it DNE * @param {String} factId * @return {Fact}

(factId)

   * @return {Fact}
   */
  _getFact (factId) {
    return this.factMap.get(factId)
  }

  /**
   * Registers fact with the almanac