.eslintrc.js

module.exports = {
  root: true,
  parser: '@typescript-eslint/parser',
  env: {
    browser: true,
    node: true,
    es6: true,
  },
  plugins: [
    'import',
    '@typescript-eslint',
    'react',
    '@emotion',
    'prettier',
  ],
  extends: [
    'eslint:recommended',
    'plugin:import/recommended',
    'plugin:import/typescript',
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
    'plugin:react/recommended',
    'prettier',
    'next/core-web-vitals',
  ],
  parserOptions: {
    project: './tsconfig.json',
    ecmaFeatures: {
      jsx: true,
    },
    // Allows for the parsing of modern ECMAScript features
    ecmaVersion: 2018,
    // Allows for the use of imports
    sourceType: 'module',
  },
  rules: {
    // Disable prop-types as we use TypeScript for type checking
    'react/prop-types': 'off',
    '@typescript-eslint/explicit-function-return-type': 'off',
    'prettier/prettier': 'error',
    '@typescript-eslint/interface-name-prefix': 'off',
    '@typescript-eslint/no-explicit-any': 'warn',
    '@typescript-eslint/ban-ts-ignore': 'off',
    // needed for NextJS's jsx without react import
    'react/react-in-jsx-scope': 'off',
    curly: 'error',
    '@typescript-eslint/prefer-optional-chain': 'error',
    '@typescript-eslint/prefer-nullish-coalescing': 'error',
    'react-hooks/rules-of-hooks': 'error',
    'react-hooks/exhaustive-deps': 'warn',
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    'no-nested-ternary': 'error',
    'no-console': 'error',
    '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
    // emotion
    '@emotion/no-vanilla': 'error',
    '@emotion/import-from-emotion': 'error',
    '@emotion/styled-import': 'error',
    '@emotion/syntax-preference': [2, 'string'],
    'import/no-unresolved': 'error',
  },
  settings: {
    react: {
      version: 'detect',
    },
    'import/parsers': {
      '@typescript-eslint/parser': ['.ts', '.tsx'],
    },
    'import/resolver': {
      typescript: {
        alwaysTryTypes: true,
      },
    },
  },
};