text: const { NotImplementedError } = require('../extensions/index.js');
  
  /**
   * Implement class DepthCalculator with method calculateDepth
   * that calculates deoth of nested array
   * 
   * @example
   * 
   * const depthCalc = new DepthCalculator();
   * depthCalc.calculateDepth([1, 2, 3, 4, 5]) => 1
   * depthCalc.calculateDepth([1, 2, 3, [4, 5]]) => 2
   * depthCalc.calculateDepth([[[]]]) => 3
   *
   */
  class DepthCalculator {
    calculateDepth(arr) {
      let count = 1;
      for (let item of arr) {
        let tmp = 0;
        if (Array.isArray(item)) {
          tmp++;
          tmp += this.calculateDepth(item);
        }
        count = tmp > count ? tmp : count;
      }
      return count;
    }
  }
  
  module.exports = {
    DepthCalculator
  };
  