typescript.js

module.exports = {
  env: {
    browser: true,
    es2021: true,
    node: true,
    jest: true,
  },
  plugins: ['@typescript-eslint', 'simple-import-sort'],
  extends: [
    './base',
    'airbnb-typescript/base',
    'plugin:jest/recommended',
    'plugin:import/errors',
    'plugin:import/typescript',
    'plugin:@typescript-eslint/recommended',
    'prettier',
  ],
  parser: '@typescript-eslint/parser',
  settings: {
    'import/resolver': {
      node: {
        extensions: ['.js', '.ts', '.d.ts', '.json'],
      },
    },
  },
  rules: {
    // for eslint-plugin-import
    'simple-import-sort/imports': 'error',
    'simple-import-sort/exports': 'error',
    'import/first': 'error',
    'import/newline-after-import': 'error',
    'import/no-duplicates': 'error',

    '@typescript-eslint/no-unused-vars': 'off', // ts already does this

    'no-use-before-define': ['error', { functions: false, classes: true, variables: true }],
    '@typescript-eslint/no-use-before-define': [
      'error',
      {
        functions: false,
        classes: true,
        variables: true,
        typedefs: false,
        ignoreTypeReferences: true,
      },
    ],
    'import/prefer-default-export': 'off',
  },
  overrides: [
    {
      files: ['**/*.ts?(x)'],
      extends: ['plugin:@typescript-eslint/recommended-requiring-type-checking'],
    },
  ],
};