.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2021: true,
  },
  extends: [
    'eslint:recommended',
    'plugin:react/recommended',
    'airbnb-base',
    'airbnb-typescript',
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaFeatures: {
      jsx: true,
    },
    ecmaVersion: 12,
    sourceType: 'module',
    project: './tsconfig.json',
  },
  plugins: [
    'react',
    'gatsby',
    '@typescript-eslint',
  ],
  rules: {
    // note you must disable the base rule as it can report incorrect errors
    'no-use-before-define': 'off',
    '@typescript-eslint/no-use-before-define': ['error'],
  },
  settings: {
    react: {
      version: 'detect',
    },
  },
  // exclude graphql.config.js from linting
  ignorePatterns: ['tsconfig.js', 'gatsby-browser.ts', 'graphql.config.js', 'tailwind.config.js'],
  overrides: [
    {
      files: ['*.ts', '*.tsx'],
      processor: '@graphql-eslint/graphql',
      parser: "@typescript-eslint/parser",
      extends: [
        "eslint:recommended",
        "plugin:@typescript-eslint/recommended"
      ],
      env: {
        es6: true,
      },
    },
    {
      files: ['*.graphql'],
      parser: '@graphql-eslint/eslint-plugin',
      plugins: ['@graphql-eslint'],
      rules: {
        '@graphql-eslint/no-anonymous-operations': 'error',
        '@graphql-eslint/naming-convention': [
          'error',
          {
            OperationDefinition: {
              style: 'PascalCase',
              forbiddenPrefixes: ['Query', 'Mutation', 'Subscription', 'Get'],
              forbiddenSuffixes: ['Query', 'Mutation', 'Subscription'],
            },
          },
        ],
      },
    },
  ],
};