.eslintrc.js

const path = require('path');

module.exports = {
  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
  plugins: ['@typescript-eslint', 'react'],
  env: {
    browser: true,
    jest: true,
  },
  extends: [
    'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
    'prettier',
  ],
  parserOptions: {
    project: path.resolve(__dirname, './tsconfig.json'),
    tsconfigRootDir: __dirname,
    ecmaVersion: 'latest', // Allows for the parsing of modern ECMAScript features
    sourceType: 'module', // Allows for the use of imports
    ecmaFeatures: {
      jsx: true, // Allows for the parsing of JSX
    },
  },
  rules: {
    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
    '@typescript-eslint/no-unused-vars': 'off',
    '@typescript-eslint/ban-ts-comment': 'off',
    // These rules don't add much value, are better covered by TypeScript and good definition files
    'react/no-direct-mutation-state': 'off',
    'react/no-deprecated': 'off',
    'react/no-string-refs': 'off',
    'react/require-render-return': 'off',
    'react/jsx-filename-extension': [
      'warn',
      {
        extensions: ['.jsx', '.tsx'],
      },
    ],
    'react/prop-types': 'off', // Is this incompatible with TS props type? idk.
    '@typescript-eslint/explicit-function-return-type': ['error', { allowExpressions: true }],
    'react/react-in-jsx-scope': 'off', // suppress errors for missing 'import React' in files
    'react/jsx-props-no-spreading': 'off',
  },
  settings: {
    react: {
      version: 'detect', // Tells eslint-plugin-react to automatically detect the version of React to use
    },
  },
};