quiz-interactions/lib/components/formula/common/util.js

A React UI component Library for quiz interaction types.

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.substituteVars = substituteVars;
exports.mathjsIsLoaded = exports.loadMathjs = exports.mathjsLoadingWrapper = void 0;

var _interopRequireWildcard2 = _interopRequireDefault(require("@babel/runtime/helpers/interopRequireWildcard"));

var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));

var _escapeRegExp = _interopRequireDefault(require("lodash/escapeRegExp"));

var _quizI18n = require("@instructure/quiz-i18n");

var _quizScientificNotation = require("@instructure/quiz-scientific-notation");

var _additional_functions = _interopRequireDefault(require("./additional_functions"));

var openingQuote = '`';
var closingQuote = '`';

function formatNumber(value, locale, mathquill) {
  return (0, _quizScientificNotation.isScientificNotation)(value) ? formatScientificNotation(value, mathquill) : (0, _quizI18n.formatPlain)(value, locale);
}

function formatScientificNotation(value, mathquill) {
  if (!mathquill) return value;

  var _parseScientificNotat = (0, _quizScientificNotation.parseScientificNotation)(value),
      _parseScientificNotat2 = (0, _slicedToArray2.default)(_parseScientificNotat, 2),
      mantissa = _parseScientificNotat2[0],
      exponent = _parseScientificNotat2[1];

  return "".concat(mantissa, "*10^{").concat(exponent, "}");
}

function substituteVars(input, vars, locale) {
  return vars.reduce(function (text, v) {
    return text // Replace mathquill variables first so that we can apply special
    // formatting for numbers in scientific notation:
    .replace( // eslint-disable-next-line no-useless-escape
    new RegExp("(\\(.*?)".concat(openingQuote).concat((0, _escapeRegExp.default)(v.name)).concat(closingQuote, "(.*?\\))"), 'g'), "$1".concat(formatNumber(v.value, locale, true), "$2")) // Then substitute non-mathquill variables:
    .replace(new RegExp("".concat(openingQuote).concat((0, _escapeRegExp.default)(v.name)).concat(closingQuote), 'g'), formatNumber(v.value, locale, false));
  }, input);
}

var promiseToGetMathjs;
var mathjsLoadingWrapper = {
  mathjs: null
};
exports.mathjsLoadingWrapper = mathjsLoadingWrapper;

var loadMathjs = function loadMathjs() {
  if (!promiseToGetMathjs) {
    promiseToGetMathjs = Promise.resolve().then(function () {
      return (0, _interopRequireWildcard2.default)(require('mathjs'));
    }).then(function (_mathjs) {
      // import all our additional factory functions
      _mathjs.import(_additional_functions.default, {
        override: true
      });

      _mathjs.config({
        angles: 'deg'
      });

      mathjsLoadingWrapper.mathjs = _mathjs;
      return mathjsLoadingWrapper.mathjs;
    });
  }

  return promiseToGetMathjs;
};

exports.loadMathjs = loadMathjs;

var mathjsIsLoaded = function mathjsIsLoaded() {
  return mathjsLoadingWrapper.mathjs !== null;
};

exports.mathjsIsLoaded = mathjsIsLoaded;