とにかくやるだけ！Next.js + TypeScript + Chakra UI + ESLint + Prettier + commitlint + Jest + huskyの環境構築よくばりセット

import '@testing-library/jest-dom'

/* eslint-disable @typescript-eslint/no-var-requires  */
const nextJest = require('next/jest')
const { compilerOptions } = require('./tsconfig.json')
const { pathsToModuleNameMapper } = require('ts-jest')

const createJestConfig = nextJest({
  // Provide the path to your Next.js app to load next.config.js and .env files in your test environment
  dir: './',
})

// Add any custom config to be passed to Jest
const customJestConfig = {
  // Add more setup options before each test is run
  setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
  // if using TypeScript with a baseUrl set to the root directory then you need the below for alias' to work
  moduleDirectories: ['node_modules', '<rootDir>/'],
  testEnvironment: 'jest-environment-jsdom',
  preset: 'ts-jest',
  moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths),
}

// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
module.exports = createJestConfig(customJestConfig)

import { render, screen } from '@testing-library/react'
import Home from '@/pages/index'

describe('Home', () => {
  it('renders a heading', () => {
    render(<Home />)

    const heading = screen.getByRole('heading', {
      name: /welcome to next\.js!/i,
    })

    expect(heading).toBeInTheDocument()
  })
})

extends:
  - '@commitlint/config-conventional'

export const colors = {
  sample: {
    gray: '#D8D8D8',
  },
}

export const fonts = {}

export const styles = {
  global: {
    body: {
      bgColor: 'sample.gray',
    },
  },
}

export const Button = {
  variants: {
    orange: {
      bg: 'orange',
      color: 'white',
    },
  },
}

import { extendTheme } from '@chakra-ui/react'
import { colors } from '@/theme/colors'
import { styles } from '@/theme/styles'
import { fonts } from '@/theme/fonts'
import { Button } from '@/theme/components/button'

const customTheme = extendTheme({
  colors,
  components: {
    Button,
  },
  fonts,
  styles,
})

export default customTheme

import '../styles/globals.css'
import type { AppProps } from 'next/app'
import { ChakraProvider } from '@chakra-ui/provider'
import customTheme from '@/theme/customTheme'

function MyApp({ Component, pageProps }: AppProps) {
  return (
    <ChakraProvider theme={customTheme}>
      <Component {...pageProps} />
    </ChakraProvider>
  )
}

export default MyApp

import type { NextPage } from 'next'
import { Button, Heading } from '@chakra-ui/react'

const Home: NextPage = () => {
  return (
    <>
      <Heading>
        Welcome to <a href="https://nextjs.org">Next.js!</a>
      </Heading>
      <Button variant={'orange'}>test</Button>
    </>
  )
}

export default Home