.eslintrc.js

// eslint-disable-next-line no-undef
module.exports = {
  env: {
    browser: true,
    es2021: true,
  },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
    'plugin:import/errors',
    'plugin:import/typescript',
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaVersion: 12,
    sourceType: 'module',
  },
  plugins: ['@typescript-eslint', 'import'],
  rules: {
    '@typescript-eslint/no-empty-function': 'off',
    '@typescript-eslint/no-inferrable-types': 'off',
    '@typescript-eslint/member-delimiter-style': [
      'error',
      {
        multiline: {
          delimiter: 'semi',
          requireLast: true,
        },
        singleline: {
          delimiter: 'semi',
          requireLast: false,
        },
      },
    ],
    '@typescript-eslint/consistent-type-imports': [
      'error',
      {
        prefer: 'type-imports',
        disallowTypeAnnotations: false,
      },
    ],
    quotes: ['error', 'single', { avoidEscape: true, allowTemplateLiterals: true }],
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    camelcase: ['error', { properties: 'always' }],
    'no-console': ['error', { allow: ['warn', 'error'] }],
  },
  settings: {
    'import/resolver': {
      node: {
        extensions: ['.js', '.ts'],
      },
      typescript: {}, // this loads <rootdir>/tsconfig.json to eslint
    },
  },
};