marazmatique/dist/games/progression.js

this is packadge for install and run Brain Games on your $shel

"use strict";

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

var _pairs = require("@hexlet/pairs");

var _getRandomInt = _interopRequireDefault(require("../getRandomInt"));

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

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

const description = 'What number is missing in the progression?';
const lengthSequence = 10;

const getElement = (start, step, index) => start + step * index;

const getRoundData = () => {
  const start = (0, _getRandomInt.default)(1, 20);
  const step = (0, _getRandomInt.default)(1, 5);
  const randomSecretPosition = (0, _getRandomInt.default)(0, lengthSequence - 1);
  let sequence = '';
  const answer = `${getElement(start, step, randomSecretPosition)}`;

  for (let i = 0; i < lengthSequence; i += 1) {
    const nextElement = i === randomSecretPosition ? '..' : getElement(start, step, i);
    sequence = `${sequence} ${nextElement}`;
  }

  sequence = sequence.trim();
  return (0, _pairs.cons)(sequence, answer);
};

var _default = () => (0, _.default)(description, getRoundData);

exports.default = _default;
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