.eslintrc.js

module.exports = {
    root: true,
    env: {
        browser: true,
        'jest/globals': true,
        node: true,
        es6: true,
    },
    parser: '@typescript-eslint/parser',
    plugins: [
        'react',
        '@typescript-eslint',
        'prettier',
        'markdown',
        'jest',
        'jest-formatting',
    ],
    parserOptions: {
        ecmaFeatures: {
            jsx: true,
        },
        ecmaVersion: 2018,
        sourceType: 'module',
    },
    extends: [
        'plugin:import/errors',
        'plugin:import/warnings',
        'plugin:import/typescript',
        'plugin:react/recommended',
        'plugin:prettier/recommended',
        'plugin:@typescript-eslint/eslint-recommended',
        'plugin:@typescript-eslint/recommended',
        'airbnb',
        'prettier',
        'prettier/react',
    ],
    settings: {
        'import/extensions': ['.js', '.jsx', '.ts', '.tsx'],
        'import/parsers': {
            '@typescript-eslint/parser': ['.ts', '.tsx'],
        },
        'import/resolver': {
            node: {
                extensions: ['.js', '.jsx', '.ts', '.tsx'],
            },
            typescript: {
                directory: ['packages/**/tsconfig.json', 'apps/*/tsconfig.json'],
            },
        },
    },
    rules: {
        'import/extensions': [
            'error',
            'ignorePackages',
            {
                js: 'never',
                jsx: 'never',
                ts: 'never',
                tsx: 'never',
            },
        ],
        'prettier/prettier': 'error',
        'no-unused-vars': 'off',
        'no-useless-constructor': 'off',
        'no-shadow': 'off',
        '@typescript-eslint/no-useless-constructor': 'error',
        '@typescript-eslint/explicit-function-return-type': 'off',
        '@typescript-eslint/no-unused-vars': 'error',
        '@typescript-eslint/member-delimiter-style': [
            2,
            {
                multiline: {
                    delimiter: 'none',
                    requireLast: false,
                },
                singleline: {
                    delimiter: 'semi',
                    requireLast: true,
                },
            },
        ],
        'react/prop-types': 'off',
        'react/jsx-props-no-spreading': 'off',
        'react/jsx-filename-extension': [
            1,
            { extensions: ['.js', '.jsx', '.ts', '.tsx'] },
        ],
    },
}