Remove compute engine

package.json

@@ -16,7 +16,7 @@
     "build:authoring": "tsc && vite build -m authoring"
   },
   "dependencies": {
-    "@khanacademy/kas": "github:openstax/raise-kas#1ab668e5032bcf4ede04f5f28f9beafc4f9d218f",
+    "@khanacademy/kas": "github:openstax/raise-kas#6481127dacbd9fda7d34a6e79f27d0e4cb4798d5",
     "bootstrap": "^5.3.2",
     "formik": "^2.4.5",
     "mathlive": "^0.95.5",

specs/blocks.spec.ts

@@ -308,7 +308,7 @@ test('attempts-exhausted response overrides answer-specific response', async ({
 test('Math field component rendered', async ({ page }) => {
   const htmlContent = `
   <div class="os-raise-ib-pset" data-schema-version="1.0" data-retry-limit="3">
-    <div class="os-raise-ib-pset-problem" data-problem-type="input" data-solution='3\\sqrt2+\\frac42' data-problem-comparator='math'>
+    <div class="os-raise-ib-pset-problem" data-problem-type="input" data-solution='3\\sqrt2+2' data-problem-comparator='math'>
       <div class="os-raise-ib-pset-problem-content">
         <p id="problem">MultipleChoice problem content: \\( x^2 \\)</p>
       </div>

src/components/InputProblem.tsx

@@ -9,7 +9,6 @@
 import { Mathfield } from './Mathfield'
 import { type MathfieldElement } from 'mathlive'
 import { parse, compare } from '@khanacademy/kas'
-import { ComputeEngine } from '@cortex-js/compute-engine'
 export const MAX_CHARACTER_INPUT_PROBLEM_LENGTH = 500
 
 interface InputProblemProps extends BaseProblemProps {
@@ -38,6 +37,30 @@
   return className
 }
 
+export const detectAndTransform = (input: string): string => {
+  // Handle fractions with single digit numerators and denominators
+  const fractionRegex: RegExp = /\\frac(\d)(\d)/g
+  input = input.replace(fractionRegex, '\\frac{$1}{$2}')
+
+  // Handle square roots with single digits
+  const sqrtRegex: RegExp = /\\sqrt(\d)/g
+  input = input.replace(sqrtRegex, '\\sqrt{$1}')
+
+  return input
+}
+
+export const evaluateMathComparator = (input: string, answer: string): boolean => {
+  const parsedInput = parse(detectAndTransform(input))
+  const parsedAnswer = parse(detectAndTransform(answer))
+
+  if (!parsedInput.parsed || !parsedAnswer.parsed) {
+    console.error('KAS failed to parse solution or input')
+    return false
+  }
+
+  return compare(parsedInput.expr, parsedAnswer.expr, { simplify: false, form: true }).equal
+}
+
 export const InputProblem = ({
   solvedCallback, exhaustedCallback, allowedRetryCallback, attemptsExhaustedResponse,
   solution, retryLimit, content, contentId, comparator, encourageResponse, buttonText, correctResponse, answerResponses, onProblemAttempt
@@ -82,26 +105,7 @@
       return parseFloat(trimmedInput) === parseFloat(trimmedAnswer)
     }
     if (comparator.toLowerCase() === 'math') {
-      const ce = new ComputeEngine()
-
-      let parsedInput = parse(ce.serialize(ce.parse(trimmedInput)))
-      let parsedAnswer = parse(ce.serialize(ce.parse(trimmedAnswer)))
-
-      // Sometimes compute engine produces an output that the KAS parse method does not understand
-      // If that is the case we can try to parse again with the raw trimmed input and answer
-      // An example of an expression that requires this is x>5
-      if (!parsedInput.parsed) {
-        parsedInput = parse(trimmedInput)
-      }
-      if (!parsedAnswer.parsed) {
-        parsedAnswer = parse(trimmedAnswer)
-      }
-
-      if (!parsedInput.parsed || !parsedAnswer.parsed) {
-        return false
-      }
-
-      return compare(parsedInput.expr, parsedAnswer.expr, { simplify: false, form: true }).equal
+      return evaluateMathComparator(trimmedInput, trimmedAnswer)
     }
     return trimmedInput.toLowerCase() === trimmedAnswer.toLowerCase()
   }

src/tests/InputProblem.test.tsx

@@ -1,5 +1,5 @@
 import { render, screen, fireEvent, act } from '@testing-library/react'
-import { InputProblem, MAX_CHARACTER_INPUT_PROBLEM_LENGTH, buildClassName } from '../components/InputProblem'
+import { InputProblem, MAX_CHARACTER_INPUT_PROBLEM_LENGTH, buildClassName, detectAndTransform, evaluateMathComparator } from '../components/InputProblem'
 import '@testing-library/jest-dom'
 
 test('InputProblem renders with content, input and button', async () => {
@@ -409,3 +409,32 @@ test('Test buildClassName', async () => {
   const validationError = buildClassName(false, false, 'error')
   expect(validationError).toBe('os-form-control os-wrong-answer-choice')
 })
+
+test('Test detectAndTransform', async () => {
+  // If a fraction and sqrt transformation is needed
+  const input = 'x=\\frac12 + \\sqrt3'
+  const expectedOutput = 'x=\\frac{1}{2} + \\sqrt{3}'
+  let result = detectAndTransform(input)
+  expect(result).toEqual(expectedOutput)
+
+  // No transformation is needed
+  const correctInput = 'x = \\frac{12}{2} + \\sqrt{9} + 4x'
+  result = detectAndTransform(input)
+  expect(correctInput).toEqual(correctInput)
+})
+
+test('Test evaluteMathComparator', async () => {
+  // Fraction test
+  expect(evaluateMathComparator('\\frac12', '\\frac{1}{2}')).toBe(true)
+
+  // sqrt and nth root test
+  expect(evaluateMathComparator('x=\\sqrt4', 'x=\\sqrt[2]{4}')).toBe(true)
+  expect(evaluateMathComparator('x=\\sqrt4', 'x=\\sqrt[3]{4}')).toBe(false)
+
+  // form test
+  expect(evaluateMathComparator('y=\\frac12x-3', 'y+3=\\frac12x')).toBe(false)
+
+  // test \lt \gt
+  expect(evaluateMathComparator('x<\\frac{1}{3}', 'x\\lt\\frac{1}{3}')).toBe(true)
+  expect(evaluateMathComparator('x>\\frac13', 'x\\gt\\frac{1}{3}')).toBe(true)
+})

src/tests/kas.test.ts

@@ -1,20 +1,18 @@
 import { parse, compare } from '@khanacademy/kas'
-import { ComputeEngine } from '@cortex-js/compute-engine'
 
-test('Test kas with compute engine and edge cases', async () => {
+test('Test kas', async () => {
   const options = {
     simplify: false,
     form: true
   }
-  const ce = new ComputeEngine()
 
   const consideredEqual = [
-    { expr1: ce.serialize(ce.parse('\\frac42')), expr2: ce.serialize(ce.parse('\\frac{4}{2}')) },
     { expr1: 'x>4', expr2: '4<x' },
     { expr1: 'x\\le4', expr2: '4\\gex' },
+    { expr1: 'x\\lt4', expr2: '4\\gtx' },
+    { expr1: 'x\\gt4', expr2: '4\\ltx' },
     { expr1: '|-4|', expr2: '|4|' },
-    { expr1: '\\sqrt[3]{27}', expr2: '\\sqrt[3]{27}' },
-    { expr1: ce.serialize(ce.parse('y=\\frac{1}{2}x+2')), expr2: ce.serialize(ce.parse('y=\\frac{x}{2}+2')) }
+    { expr1: '\\sqrt[3]{27}', expr2: '\\sqrt[3]{27}' }
   ]
   // If the options simplify is true the nth root tests fail.
   consideredEqual.forEach((val) => {

vite.config.mts

@@ -43,8 +43,6 @@ export default defineConfig(({ mode }) => {
 
   config.build['rollupOptions'].output.manualChunks = {
     mathlive: ['mathlive'],
-    cortexjs: ['@cortex-js/compute-engine']
-
   }
 
   return config