.eslintrc.js

module.exports = {
  env: {
    node: true,
    es6: true,
    'jest/globals': true,
  },
  parserOptions: {
    ecmaVersion: 2020,
    sourceType: 'module',
    ecmaFeatures: {
      jsx: true,
    },
  },
  overrides: [
    {
      files: ['*.ts'],
      parser: '@typescript-eslint/parser',
      parserOptions: {
        project: 'tsconfig.json',
        impliedStrict: true,
        createDefaultProgram: true,
      },
      plugins: ['eslint-plugin-prefer-arrow', 'import', 'jsdoc'],
      extends: [
        'plugin:@typescript-eslint/recommended',
        'plugin:jest/recommended',
        'plugin:import/typescript',
        'plugin:prettier/recommended',
      ],
      rules: {
        '@typescript-eslint/array-type': [
          'error',
          {
            'default': 'array-simple',
          }
        ],
        '@typescript-eslint/comma-spacing': 'error',
        '@typescript-eslint/no-redeclare': 'error',
        '@typescript-eslint/no-unused-vars': ["error", { "argsIgnorePattern": "^_" }],
        '@typescript-eslint/no-var-requires': 'off',
        '@typescript-eslint/prefer-ts-expect-error': 'error',
        'jest/valid-title': 'off',
        'jest/no-conditional-expect': 'off',
        'import/order': [
          'error',
          {
            'alphabetize': {
              'order': 'asc',
              'caseInsensitive': true,
            },
            // this is the default order except for added `internal` in the middle
            'groups': [
              'builtin',
              'external',
              'internal',
              'parent',
              'sibling',
              'index',
            ],
            'newlines-between': 'always',
          }
        ],
        'object-shorthand': 'error',
        'padding-line-between-statements': [
          'error',
          { 'blankLine': 'always', 'prev': '*', 'next': 'return' },
        ],
        'prefer-object-spread': 'error',
      },
    }
  ],
  rules: {
    'comma-spacing': 'off',
    'no-redeclare': 'off',
    'no-shadow': 'off',
    'quotes': 'off',
  },
}