.eslintrc.js

/**
 * 'off' or 0 - turn the rule off
 * 'warn' or 1 - turn the rule on as a warning (doesn't affect exit code)
 * 'error' or 2 - turn the rule on as an error (exit code will be 1)
 */
module.exports = {
    env: {
      node: true
    },
    extends: [
      'eslint:recommended',
      'plugin:@typescript-eslint/eslint-recommended',
      'plugin:@typescript-eslint/recommended', // Uses the recommended rules from the @typescript-eslint/eslint-plugin
    ],
    ignorePatterns: ['src /**/*.test.ts', 'lib/**', 'dist /**', 'node_modules/**', '.eslintrc.js', 'src/test/', '__test__', 'coverage/**/*'],
    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
      project: ['tsconfig.json']
    },
    plugins: ['unused-imports'],
    // Place to specify ESLint rules. Can be used to overwrite rules specified from the extended configs
    // e.g. '@typescript-eslint/explicit-function-return-type': 2,
    rules: {
      '@typescript-eslint/ban-ts-comment': 0,
      '@typescript-eslint/no-explicit-any': 2,
      '@typescript-eslint/no-var-requires': 0,
      // 'consistent-return': 2,
      'no-console': 2,
      /**
       * Variables
       */
      'no-unused-vars': 'off', // http://eslint.org/docs/rules/no-unused-vars
      'unused-imports/no-unused-imports': 'error', //https://www.npmjs.com/package/eslint-plugin-unused-imports
      'unused-imports/no-unused-vars': [
        'error',
        {
          //https://www.npmjs.com/package/eslint-plugin-unused-imports
          vars: 'all',
          varsIgnorePattern: '^_',
          args: 'after-used',
          argsIgnorePattern: '^_'
        }
      ],
      'no-use-before-define': 2, // http://eslint.org/docs/rules/no-use-before-define

      /**
       * Possible errors
       */
      'comma-dangle': [2, 'never'], // http://eslint.org/docs/rules/comma-dangle
      'no-duplicate-case': 2, // http://eslint.org/docs/rules/no-duplicate-case
      'no-empty': 2, // http://eslint.org/docs/rules/no-empty
      'no-ex-assign': 2, // http://eslint.org/docs/rules/no-ex-assign
      'no-extra-boolean-cast': 0, // http://eslint.org/docs/rules/no-extra-boolean-cast
      'no-extra-semi': 2, // http://eslint.org/docs/rules/no-extra-semi
      'no-irregular-whitespace': 2, // http://eslint.org/docs/rules/no-irregular-whitespace
      'no-sparse-arrays': 2, // http://eslint.org/docs/rules/no-sparse-arrays
      'no-invalid-regexp': 2, // http://eslint.org/docs/rules/no-invalid-regexp
      'no-restricted-globals': [
        'error', // https://eslint.org/docs/rules/no-restricted-globals
        { name: 'setTimeout' },
        { name: 'clearTimeout' },
        { name: 'setInterval' },
        { name: 'clearInterval' },
        { name: 'setImmediate' },
        { name: 'clearImmediate' }
      ],
      'no-await-in-loop': 2,  // https://eslint.org/docs/rules/no-await-in-loop

      /**
       * Style
       */
      indent: [
        2,
        2, // http://eslint.org/docs/rules/indent
        { SwitchCase: 1 }
      ],
      quotes: [
        2,
        'single',
        'avoid-escape' // http://eslint.org/docs/rules/quotes
      ],
      'comma-spacing': [
        2,
        {
          // http://eslint.org/docs/rules/comma-spacing
          before: false,
          after: true
        }
      ],
      'comma-style': [2, 'last'], // http://eslint.org/docs/rules/comma-style
      'no-multiple-empty-lines': [
        2,
        {
          // http://eslint.org/docs/rules/no-multiple-empty-lines
          max: 2
        }
      ],
      'no-trailing-spaces': 2, // http://eslint.org/docs/rules/no-trailing-spaces
      'no-extra-parens': [2, 'functions'], // http://eslint.org/docs/rules/no-extra-parens
      // 'semi': [2, 'never'],         // http://eslint.org/docs/rules/semi
      'semi-spacing': [
        2,
        {
          // http://eslint.org/docs/rules/semi-spacing
          before: false,
          after: true
        }
      ],
      'sort-imports': [
        'error',
        {
          ignoreCase: false,
          ignoreDeclarationSort: true,
          ignoreMemberSort: false,
          memberSyntaxSortOrder: ['all', 'single', 'multiple', 'none'],
          allowSeparatedGroups: false
        }
      ],
      'no-duplicate-imports': ['error', { includeExports: true }] //https://eslint.org/docs/rules/no-duplicate-imports
    }
  }