.eslintrc.js

const fs = require('fs');
const path = require('path');
const prettierOptions = JSON.parse(
  fs.readFileSync(path.resolve(__dirname, '.prettierrc'), 'utf8'),
);

module.exports = {
  env: {
    browser: true,
    es6: true,
    jest: true,
  },
  extends: [
    'airbnb',
    'airbnb-typescript',
    'airbnb/hooks',
    'prettier',
    'plugin:@typescript-eslint/recommended',
    'plugin:@typescript-eslint/recommended-requiring-type-checking',
    'plugin:react/jsx-runtime',
    'plugin:unicorn/recommended',
  ],
  globals: {
    Atomics: 'readonly',
    SharedArrayBuffer: 'readonly',
  },
  parserOptions: {
    parser: '@typescript-eslint/parser',
    project: './tsconfig.json',
    plugins: ['@typescript-eslint'],
    ecmaFeatures: {
      jsx: true,
    },
    ecmaVersion: 2018,
    sourceType: 'module',
  },
  plugins: ['react', 'prettier'],
  rules: {
    'prettier/prettier': ['error', prettierOptions],
    // Too restrictive, writing ugly code to defend against a very unlikely scenario: https://eslint.org/docs/rules/no-prototype-builtins
    'no-prototype-builtins': 'off',
    // https://basarat.gitbooks.io/typescript/docs/tips/defaultIsBad.html
    'import/prefer-default-export': 'off',
    'import/no-default-export': 'error',
    // Too restrictive: https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/destructuring-assignment.md
    'react/destructuring-assignment': 'off',
    // No jsx extension: https://github.com/facebook/create-react-app/issues/87#issuecomment-234627904
    'react/jsx-filename-extension': 'off',
    // Use function hoisting to improve code readability
    'no-use-before-define': [
      'error',
      { functions: false, classes: true, variables: true },
    ],
    // Allow most functions to rely on type inference. If the function is exported, then `@typescript-eslint/explicit-module-boundary-types` will ensure it's typed.
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/no-use-before-define': [
      'error',
      { functions: false, classes: true, variables: true, typedefs: true },
    ],
    // Common abbreviations are known and readable
    'unicorn/prevent-abbreviations': 'off',
    // Airbnb prefers forEach
    'unicorn/no-array-for-each': 'off',
    // It's not accurate in the monorepo style
    'import/no-extraneous-dependencies': 'off',
    'import/extensions': 'off',
    'unicorn/filename-case': [
      'error',
      {
        cases: {
          camelCase: true,
          pascalCase: true,
        },
      },
    ],
    'react/require-default-props': 'off',
    '@typescript-eslint/no-unsafe-assignment': 'off',
    'react/jsx-props-no-spreading': 'off',
    '@typescript-eslint/no-unsafe-call': 'off',
    '@typescript-eslint/no-unsafe-member-access': 'off',
    '@typescript-eslint/no-unsafe-return': 'off',
  },
};