Failed reproduction for typechecking

content/3.testing/.template/files/app.vue

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+<script setup lang="ts">
+const msg = 'testing'
+</script>
+
+<template>
+  <h1>{{ msg }}</h1>
+</template>

content/3.testing/.template/files/components/CountDown.nuxt.test.ts

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+// TODO: write unit tests for CountDown component

content/3.testing/.template/files/components/CountDown.vue

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+<script setup lang="ts">
+// This component is a countdown timer for the end of the year.
+// It will display the number of days, hours, minutes, and seconds until the end of the year.
+// It also displays the number of weeks remaining in the year.
+
+const countdown = ref({
+  days: 0,
+  hours: 0,
+  minutes: 0,
+  seconds: 0,
+})
+
+const endOfYear = new Date(new Date().getFullYear() + 1, 0, 1)
+
+function updateCountdown() {
+  const now = new Date()
+  const diff = endOfYear.getTime() - now.getTime()
+
+  const days = Math.floor(diff / (1000 * 60 * 60 * 24))
+  const hours = Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60))
+  const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60))
+  const seconds = Math.floor((diff % (1000 * 60)) / 1000)
+
+  countdown.value.days = days
+  countdown.value.hours = hours
+  countdown.value.minutes = minutes
+  countdown.value.seconds = seconds
+}
+
+let intervalId: NodeJS.Timeout
+
+onMounted(() => {
+  // Call updateCountdown immediately to set the initial state
+  updateCountdown()
+
+  // Update the countdown every second
+  intervalId = setInterval(updateCountdown, 1000)
+})
+
+onUnmounted(() => {
+  // Clear the interval when the component is unmounted
+  clearInterval(intervalId)
+})
+
+const { totalWeeks, currentWeekNumber } = useWeek()
+</script>
+
+<template>
+  <div class="flex flex-col justify-between gap-x-16 gap-y-6 border-4 bg-white p-6 md:flex-row md:items-center dark:border-gray-600 dark:bg-gray-800" data-test-id="countdown-timer">
+    <div class="text-gray-800 dark:text-gray-200">
+      <h2 class="mb-2 text-lg text-gray-900 font-bold uppercase dark:text-gray-100">
+        Time Until New Year
+      </h2>
+      <p class="flex flex-wrap gap-2 text-xl font-bold tracking-wide md:text-2xl" data-test-id="countdown">
+        <span class="whitespace-nowrap">
+          <span class="tabular-nums" data-test-id="countdown-days">{{ countdown.days }}</span> days,
+        </span>
+        <span class="whitespace-nowrap">
+          <span class="tabular-nums" data-test-id="countdown-hours">{{ countdown.hours }}</span> hours,
+        </span>
+        <span class="whitespace-nowrap">
+          <span class="tabular-nums" data-test-id="countdown-minutes">{{ countdown.minutes }}</span> minutes and
+        </span>
+        <span class="whitespace-nowrap">
+          <span class="tabular-nums" data-test-id="countdown-seconds">{{ countdown.seconds }}</span> seconds
+        </span>
+      </p>
+    </div>
+    <div class="flex gap-1 text-gray-800 md:flex-col md:items-end dark:text-gray-200">
+      <div class="text-lg font-bold uppercase md:text-xl" data-test-id="weeks">
+        <div class="w-fit md:ml-auto">
+          <span class="text-yellow-700 dark:text-yellow-400" data-test-id="current-week">Week {{ currentWeekNumber }}</span>
+          <span class="text-gray-700 dark:text-gray-300" data-test-id="total-weeks"> of {{ totalWeeks }}</span>
+        </div>
+        <div class="whitespace-nowrap text-base text-gray-600 dark:text-gray-400" data-test-id="weeks-remaining">
+          ({{ totalWeeks - currentWeekNumber }} weeks remaining)
+        </div>
+      </div>
+    </div>
+  </div>
+</template>

content/3.testing/.template/files/composables/useWeek.nuxt.test.ts

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+import { useWeek } from './useWeek'
+
+describe('useWeek', () => {
+  beforeEach(() => {
+    // Mock the current date to a fixed value for consistent testing
+    vi.useFakeTimers()
+    vi.setSystemTime(new Date('2024-03-14'))
+  })
+
+  afterEach(() => {
+    vi.useRealTimers()
+  })
+
+  it('initializes with current year', () => {
+    const { weeks, currentWeekNumber, totalWeeks } = useWeek()
+
+    expect(weeks.value.length).toBeGreaterThan(0)
+    expect(currentWeekNumber.value).toBe(11) // Week 11 in March 14, 2024
+    expect(totalWeeks.value).toBe(53)
+  })
+
+  it('calculates remaining weeks correctly', () => {
+    const { remainingWeeks, currentWeekNumber, totalWeeks } = useWeek()
+
+    expect(remainingWeeks.value).toBe(totalWeeks.value - currentWeekNumber.value)
+  })
+
+  it('changes year correctly', () => {
+    const { changeYear, weeks, currentWeekNumber } = useWeek()
+
+    // Change to previous year
+    changeYear(2023)
+    expect(weeks.value.length).toBe(53)
+
+    expect(currentWeekNumber.value).toBe(0)
+  })
+
+  it('handles leap years correctly', () => {
+    const { changeYear, weeks } = useWeek()
+
+    // 2024 is a leap year
+    changeYear(2024)
+    expect(weeks.value.length).toBe(53)
+
+    // 2025 is not a leap year
+    changeYear(2025)
+    expect(weeks.value.length).toBe(53)
+  })
+})

content/3.testing/.template/files/composables/useWeek.ts

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+export function useWeek() {
+  const yearRef = ref(new Date().getFullYear())
+  const weeks = computed(() => calculateWeeks(yearRef.value))
+
+  const currentWeekNumber = computed(() => weeks.value.find(week => week.isCurrentWeek)?.number ?? 0)
+
+  const totalWeeks = computed(() => weeks.value.length)
+
+  const remainingWeeks = computed(() => totalWeeks.value - currentWeekNumber.value)
+
+  const changeYear = (year: number) => {
+    yearRef.value = year
+  }
+
+  return {
+    weeks,
+    currentWeekNumber,
+    totalWeeks,
+    remainingWeeks,
+    changeYear,
+  }
+}

content/3.testing/.template/files/nuxt.config.ts

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+export default defineNuxtConfig({
+  modules: ['@nuxt/test-utils/module'],
+
+  compatibilityDate: '2025-02-25',
+})

content/3.testing/.template/files/package.json

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+{
+  "type": "module",
+  "private": true,
+  "packageManager": "pnpm@9.15.4",
+  "scripts": {
+    "dev": "nuxt dev",
+    "prepare": "nuxt prepare",
+    "test:unit": "vitest",
+    "test:unit-coverage": "vitest --coverage",
+    "test:unit-ui": "vitest --coverage --ui"
+  },
+  "devDependencies": {
+    "@nuxt/test-utils": "latest",
+    "@vitest/coverage-v8": "latest",
+    "@vitest/ui": "latest",
+    "@vue/test-utils": "latest",
+    "happy-dom": "latest",
+    "nuxt": "latest",
+    "typescript": "latest",
+    "vitest": "latest",
+    "vue": "latest"
+  }
+}

content/3.testing/.template/files/utils/TimeUtils.test.ts

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+import { calculateWeeks } from './TimeUtils'
+
+describe('timeUtils', () => {
+  beforeEach(() => {
+    // Set fixed date for consistent testing
+    vi.useFakeTimers()
+    vi.setSystemTime(new Date('2024-03-14T12:00:00.000Z'))
+  })
+
+  afterEach(() => {
+    vi.useRealTimers()
+  })
+
+  describe('calculateWeeks', () => {
+    it('calculates correct number of weeks for a year', () => {
+      // Test a regular year (2023)
+      const weeks2023 = calculateWeeks(2023)
+      expect(weeks2023.length).toBe(53)
+
+      // Test a leap year (2024)
+      const weeks2024 = calculateWeeks(2024)
+      expect(weeks2024.length).toBe(53)
+    })
+
+    it('sets correct start and end dates for weeks', () => {
+      const weeks = calculateWeeks(2024)
+      const firstWeek = weeks[0]
+      const lastWeek = weeks[weeks.length - 1]
+
+      // Check date components separately to avoid timezone issues
+      expect(firstWeek?.weekStart.getFullYear()).toBe(2024)
+      expect(firstWeek?.weekStart.getMonth()).toBe(0) // January
+      expect(firstWeek?.weekStart.getDate()).toBe(1) // 1st
+
+      expect(lastWeek?.weekEnd.getFullYear()).toBe(2024)
+      expect(lastWeek?.weekEnd.getMonth()).toBe(11) // December
+      expect(lastWeek?.weekEnd.getDate()).toBe(31) // 31st
+    })
+
+    it('marks current week correctly', () => {
+      const weeks = calculateWeeks(2024)
+      const currentWeek = weeks.find(week => week.isCurrentWeek)
+
+      expect(currentWeek).toBeDefined()
+      expect(currentWeek?.number).toBe(11) // March 14, 2024 is in week 11
+    })
+  })
+})

content/3.testing/.template/files/utils/TimeUtils.ts

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+export interface Week {
+  number: number
+  weekStart: Date
+  weekEnd: Date
+  isCurrentWeek: boolean
+}
+
+// Function to calculate weeks with start and end dates
+// This function calculates all weeks for a given year and returns an array of Week objects
+// Each Week object contains:
+// - number: The week number (1-53)
+// - weekStart: Date object for the start of week (Jan 1st for first week)
+// - weekEnd: Date object for end of week (Dec 31st for last week)
+// - isCurrentWeek: Boolean indicating if this is the current week
+export function calculateWeeks(year: number): Week[] {
+  const today = new Date() // Get current date for comparing current week
+  const weeks: Week[] = []
+
+  // Start from January 1st of the selected year
+  const date = new Date(year, 0, 1)
+
+  // Calculate weeks by iterating through the year
+  let weekNumber = 1
+  while (date.getFullYear() === year) {
+    // Start of week is the current date
+    const weekStart = new Date(date)
+
+    // Move date to the end of the week (next Sunday)
+    // For first week, this could be less than 7 days if year starts mid-week
+    date.setDate(date.getDate() + ((7 - date.getDay()) % 7))
+
+    // Handle edge case for year boundary
+    const weekEnd
+      = date.getFullYear() !== year
+        ? new Date(year, 11, 31, 23, 59, 59) // December 31st 23:59:59
+        : new Date(date.getFullYear(), date.getMonth(), date.getDate(), 23, 59, 59)
+
+    // Check if this week contains today's date
+    const isCurrentWeek = today >= weekStart && today <= weekEnd
+
+    // Add the week to our array
+    weeks.push({ number: weekNumber, weekStart, weekEnd, isCurrentWeek })
+
+    // Move to start of next week
+    date.setDate(date.getDate() + 1)
+    weekNumber++
+  }
+
+  return weeks
+}

content/3.testing/.template/files/vitest.config.ts

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+import { defineVitestConfig } from '@nuxt/test-utils/config'
+import 'dotenv/config'
+
+export default defineVitestConfig({
+  test: {
+    name: 'unit',
+    globals: true,
+    environment: 'node',
+    include: ['**/tests/unit/**/*.test.ts', '**/components/**/*.test.ts', '**/composables/**/*.test.ts', '**/utils/**/*.test.ts'],
+    coverage: {
+      provider: 'v8',
+      include: ['**/components/**/*.vue', '**/composables/**/*.ts'],
+    },
+  },
+})

content/3.testing/.template/index.ts

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+import type { GuideMeta } from '~/types/guides'
+
+export const meta: GuideMeta = {
+  startingFile: 'app.vue',
+  features: {
+    terminal: false,
+    fileTree: true,
+    navigation: false,
+  },
+}

content/3.testing/.template/solutions/app.vue

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+<script setup lang="ts">
+const msg = 'testing'
+</script>
+
+<template>
+  <h1>{{ msg }}</h1>
+</template>