.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  plugins: ['@typescript-eslint'],
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended',
    'prettier',
    'prettier/@typescript-eslint',
  ],
  env: {
    es6: true,
    browser: true,
    jest: true,
    node: true,
  },
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: 'tsconfig.json',
    sourceType: 'module',
  },
  rules: {
    '@typescript-eslint/explicit-function-return-type': ['warn', { allowExpressions: true }],
    '@typescript-eslint/no-floating-promises': 'error',
    '@typescript-eslint/no-use-before-define': [
      'warn',
      { functions: false, classes: false, variables: false },
    ],
    '@typescript-eslint/no-unused-vars': [
      2,
      {
        argsIgnorePattern: '^_',
      },
    ],
    'no-console': [
      2,
      {
        allow: ['warn', 'error'],
      },
    ],
  },
  settings: {
    react: {
      version: 'detect',
    },
  },
}