.eslintrc.js

module.exports = {
  root: true,
  parser: '@typescript-eslint/parser',
  env: {
    node: true,
    es6: true,
    mocha: true,
  },
  plugins: ['@typescript-eslint'],
  extends: ['eslint:recommended', 'plugin:@typescript-eslint/recommended', 'react-app'],
  globals: {
    Atomics: 'readonly',
    SharedArrayBuffer: 'readonly',
  },
  parserOptions: {
    ecmaVersion: 2018,
    sourceType: 'module',
  },
  ignorePatterns: ['node_modules', 'build', '*-build', '*.json', '!*'],
  rules: {
    'no-unused-vars': ['warn', { vars: 'all', args: 'after-used', argsIgnorePattern: '^_', varsIgnorePattern: '^_' }],
    'no-console': 'warn',
    'no-shadow': 'warn',
    'ignored-by-default': 0,
    '@typescript-eslint/no-unused-vars': [
      'warn',
      { vars: 'all', args: 'after-used', argsIgnorePattern: '^_', varsIgnorePattern: '^_' },
    ],
    '@typescript-eslint/no-non-null-assertion': 0,
    '@typescript-eslint/ban-ts-ignore': 0,
    '@typescript-eslint/ban-ts-comment': 0,
    '@typescript-eslint/explicit-function-return-type': 0,
    '@typescript-eslint/explicit-module-boundary-types': 0,
  },
};