text: import { NotImplementedError } from '../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
   *
   */
  export default class DepthCalculator {
    calculateDepth(arr) {
      let curDepth = 1;
      let maxDepth = 1;
      arr.forEach(el => {
        if (Array.isArray(el)) {
          curDepth += this.calculateDepth(el);
          maxDepth = Math.max(curDepth, maxDepth);
          curDepth = 1;
        }
      })
  
      return maxDepth;
    }
  }
  