.eslintrc.js

module.exports = {
  root: true,
  parserOptions: {
    parser: '@typescript-eslint/parser',
  },
  env: {
    browser: true,
  },
  extends: [
    "standard",
    "plugin:@typescript-eslint/eslint-recommended",
    "plugin:@typescript-eslint/recommended",
  ],
  plugins: [
    '@typescript-eslint',
  ],
  rules: {
    'no-console': process.env.NODE_ENV === 'production' ? 'error' : 'off',

    // allow async-await
    'generator-star-spacing': 'off',
    // allow debugger during development
    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
    indent: [2, 2],
    'no-tabs': 0,
    'comma-dangle': ['error', 'always-multiline'],
    '@typescript-eslint/member-delimiter-style': [1, {
      multiline: {
        delimiter: 'none',
        requireLast: false,
      },
      singleline: {
        delimiter: 'comma',
        requireLast: false,
      },
    }],
    'no-unused-vars': 'off',
    'no-unused-expressions': 'off',
    '@typescript-eslint/no-unused-expressions': 1,
    '@typescript-eslint/no-explicit-any': 0,
    '@typescript-eslint/explicit-module-boundary-types': 0,
    '@typescript-eslint/no-use-before-define': 0,
    '@typescript-eslint/no-extra-semi': 0,
    '@typescript-eslint/no-unused-vars': [1, {
      vars: 'all',
      args: 'after-used',
      ignoreRestSiblings: false,
      argsIgnorePattern: '^_',
    }],
  },
  overrides: [
    {
      files: ['*.js'],
      rules: {
        '@typescript-eslint/no-var-requires': 'off',
      },
    },
    {
      files: ['**/*.d.ts'],
      rules: {
        "no-useless-constructor": "off",
        "@typescript-eslint/no-useless-constructor": "error",
      },
    }
  ],
}