mathsteps-experimental-fork/dist/cjs/lib/simplifyExpression/stepEvaluationHelpers.js

Step by step math solutions. Experimental Fork

'use strict';

Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });

const index = require('../index.js');
const expressionEqualsAndNormalization = require('../newServices/expressionEqualsAndNormalization.js');
const myNodeToString = require('../newServices/nodeServices/myNodeToString.js');
const cleanString = require('../util/cleanString.js');
const equalityCache = require('../util/equalityCache.js');

const nextStepEqCache = new equalityCache.EqualityCache();
const ansStepCache = {};
function getAnswerFromStep(userStep) {
  userStep = cleanString.cleanString(userStep);
  for (const cachedStep of Object.keys(ansStepCache)) {
    if (expressionEqualsAndNormalization.areExpressionEqual(cachedStep, userStep, nextStepEqCache))
      return ansStepCache[cachedStep];
  }
  const eventualAnswer = index.default.simplifyExpression({
    expressionAsText: userStep,
    isDebugMode: false,
    expressionCtx: void 0,
    getMistakes: false,
    getAllNextStepPossibilities: false
    // onStepCb: (step) => {
    // },
  });
  const strEventualAnswer = myNodeToString.myNodeToString(eventualAnswer);
  ansStepCache[userStep] = strEventualAnswer;
  return strEventualAnswer;
}
function getAnswerFromEquation(equation, variable = null) {
  const useThisVariable = variable || equation.match(/[a-z]/i)?.[0] || "x";
  const result = index.default.solveEquation({
    equationAsText: equation,
    unknownVariable: useThisVariable
    /// **
    // * @param {{ equation: { getId: () => any; }; stepId: string; }} step
    // */
    // onStepCb(step) {
    //  console.log(`[ ${step.equation.getId()} ] ${step.stepId} | ${step.equation}`)
    // },
  });
  return result.getSolutionsAsText();
}

exports.getAnswerFromEquation = getAnswerFromEquation;
exports.getAnswerFromStep = getAnswerFromStep;