Convert number from one range to another

convert-range.js

 /**
   * Convert value from one range to another
   * @param {Number} value value to convert
   * @param {Object} oldRange min, max of values range
   * @param {Object} newRange min, max of desired range
   * @return {Number} value converted to other range
   */
  function convertRange(value, oldRange, newRange) {
    return ((value - oldRange.min) * (newRange.max - newRange.min)) / (oldRange.max - oldRange.min) + newRange.min;
  }