.eslintrc.js

module.exports = {
    parser: '@typescript-eslint/parser',
    parserOptions: {
        project: 'tsconfig.json',
        tsconfigRootDir: __dirname,
        sourceType: 'module',
    },
    plugins: ['@typescript-eslint/eslint-plugin'],
    extends: [
        'plugin:@typescript-eslint/recommended',
        'plugin:prettier/recommended',
    ],
    root: true,
    env: {
        node: true,
        jest: true,
    },
    ignorePatterns: ['.eslintrc.js'],
    rules: {
        '@typescript-eslint/array-type': ['error', { default: 'generic' }],
        '@typescript-eslint/explicit-module-boundary-types': 'warn',
        '@typescript-eslint/no-explicit-any': 'error',
        '@typescript-eslint/explicit-function-return-type': 'warn',
        '@typescript-eslint/ban-ts-comment': [
            'warn',
            {
                'ts-expect-error': 'allow-with-description',
            },
        ],
        '@typescript-eslint/ban-types': 'warn',
        '@typescript-eslint/naming-convention': [
            'error',
            {
                selector: ['variable', 'function'],
                format: ['camelCase', 'UPPER_CASE', 'PascalCase'],
                leadingUnderscore: 'allow',
            },
        ],
        '@typescript-eslint/no-for-in-array': 'error',
        '@typescript-eslint/restrict-plus-operands': 'error',
        '@typescript-eslint/no-require-imports': 'warn',
        '@typescript-eslint/switch-exhaustiveness-check': 'error',
        '@typescript-eslint/promise-function-async': 'warn',
        '@typescript-eslint/consistent-type-imports': 'warn',

        // Extension Rules
        'no-unused-vars': 'off',
        '@typescript-eslint/no-unused-vars': 'warn',

        'no-throw-literal': 'off',
        '@typescript-eslint/no-throw-literal': 'error',
    },
};