.eslintrc.js

const OFF = 0
// const WARN = 1;
const ERROR = 2

module.exports = {
  root: true,
  parser: '@typescript-eslint/parser', // Specifies the ESLint parser
  parserOptions: {
    ecmaVersion: 2020, // Allows for the parsing of modern ECMAScript features
    sourceType: 'module' // Allows for the use of imports
  },
  env: { jest: true, node: true },
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended', // Uses the recommended rules from @typescript-eslint/eslint-plugin
    // 'prettier/@typescript-eslint', // Uses eslint-config-prettier to disable ESLint rules from @typescript-eslint/eslint-plugin that would conflict with prettier
    'plugin:prettier/recommended' // Enables eslint-plugin-prettier and eslint-config-prettier. This will display prettier errors as ESLint errors. Make sure this is always the last configuration in the extends array.
  ],
  rules: {
    // the next two are disabled until all of repo can be cleaned up
    '@typescript-eslint/no-var-requires': OFF,
    '@typescript-eslint/explicit-module-boundary-types': OFF,
    'no-extra-semi': OFF,
    'no-console': OFF,
    'no-unused-vars': OFF,
    'no-prototype-builtins': OFF,
    '@typescript-eslint/no-unused-vars': [
      'error',
      { argsIgnorePattern: '^_', ignoreRestSiblings: true }
    ]
  },
  overrides: [
    {
      // enable the rule specifically for TypeScript files
      files: ['*.ts', '*.tsx'],
      rules: {
        '@typescript-eslint/explicit-module-boundary-types': [ERROR],
        '@typescript-eslint/no-var-requires': ERROR
      }
    }
  ],
  settings: {
    'import/resolver': {
      node: {
        paths: ['src'],
        extensions: ['.js', '.ts']
      }
    }
  }
}