brain-games-by-botirk/dist/games/progression.js

game developed for hexlet.io education course

"use strict";

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

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

var _ = require("..");

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

const instruction = 'What number is missing in the progression?'; // please: progCount must be >= 3

const minNum = 1;
const maxNum = 50;
const progCount = 10;
const minStep = 2;
const maxStep = minStep + 9;

const generateProgression = () => {
  const step = (0, _utils.default)(minStep, maxStep);
  const result = [(0, _utils.default)(minNum, maxNum)];

  for (let i = 1; i < progCount; i += 1) {
    result.push(result[0] + step * i);
  }

  return result;
};

const generator = () => {
  const progression = generateProgression(); // generated hiden index from generated array

  const hiddenIndex = (0, _utils.default)(0, progCount);
  const correctAnswer = String(progression[hiddenIndex]); // replace hidden index with two dots

  progression[hiddenIndex] = '..';
  const question = progression.join(' ');
  return [question, correctAnswer];
};

var _default = () => (0, _.playGame)(instruction, generator);

exports.default = _default;
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