project-magzhan-brgms/dist/games/progression.js

This a brain-games project from Hexlet

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _ = _interopRequireDefault(require(".."));

var _utils = _interopRequireDefault(require("../utils"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const taskExplanationMessage = 'What number is missing in the progression?';
const sizeOfProgression = 10;

const generateGame = () => {
  const arr = [];
  const firstElementOfProgression = 1;
  const difference = (0, _utils.default)(1, 20);
  let currentElementOfProgression = firstElementOfProgression;

  for (let i = 0; i < sizeOfProgression; i += 1) {
    arr.push(currentElementOfProgression);
    currentElementOfProgression += difference;
  }

  const hiddenNumPosition = (0, _utils.default)(0, arr.length);
  const bufferArray = arr.slice(0);
  bufferArray.splice(hiddenNumPosition, 1, '..');
  const question = bufferArray.join(' ');
  const rightAnswer = arr[hiddenNumPosition].toString(10);
  return {
    question,
    rightAnswer
  };
};

const progressionGame = () => (0, _.default)(taskExplanationMessage, generateGame);

var _default = progressionGame;
exports.default = _default;
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