text: /**
   * Copyright 2020 Phenix Real Time Solutions, Inc. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /* eslint-disable no-unused-vars */
  
  module.exports = {
    average(arr) {
      if (arr.length === 0) {
        return 0;
      }
  
      return arr.reduce((p, c) => p + c, 0) / arr.length;
    },
  
    chunk(arr, size) {
      const chunked = [];
  
      if (size === 0) {
        throw new Error('Chunk size cannot be 0!');
      }
  
      for (let i = 0, len = arr.length; i < len; i += size) {
        chunked.push(arr.slice(i, i + size));
      }
  
      return chunked;
    },
  
    getColorDistance(target, actual) {
      const result = Math.sqrt(
        (target.r - actual.r) * (target.r - actual.r) +
        (target.g - actual.g) * (target.g - actual.g) +
        (target.b - actual.b) * (target.b - actual.b)
      );
  
      if (isNaN(result)) {
        throw new Error('Wrong parameters passed!');
      }
  
      return result;
    }
  };