.eslintrc.js

module.exports = {
  env: {
    es6: true,
    jasmine: true,
    node: true,
    worker: true,
  },
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaVersion: 2018,
    project: ['./tsconfig.json'],
    tsconfigRootDir: __dirname,
    sourceType: 'module',
  },
  plugins: ['@typescript-eslint', 'prettier', 'simple-import-sort', 'import'],
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended',
    'prettier/@typescript-eslint',
    'plugin:prettier/recommended',
    'plugin:import/typescript',
  ],
  rules: {
    curly: ['warn', 'multi-line', 'consistent'],
    'no-bitwise': 'warn',
    'no-console': ['warn', { allow: ['error', 'info', 'table', 'warn'] }],
    'no-param-reassign': 'warn',
    'no-shadow': 'off', // disabled in favour of @typescript-eslint/no-shadow, see https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/no-shadow.md
    'no-unused-vars': 'off', // disabled in favour of @typescript-eslint/no-unused-vars, see https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/no-unused-vars.md
    'prefer-const': 'warn',
    radix: ['warn', 'always'],
    'spaced-comment': ['warn', 'always', { line: { markers: ['/ <reference'] } }],
    'import/no-cycle': 'warn',
    'simple-import-sort/sort': 'warn',
    '@typescript-eslint/array-type': ['warn', { default: 'array-simple' }],
    '@typescript-eslint/await-thenable': 'warn',
    '@typescript-eslint/no-var-requires': 'warn',
    '@typescript-eslint/ban-types': 'warn',
    '@typescript-eslint/explicit-function-return-type': ['warn', { allowExpressions: true }],
    '@typescript-eslint/explicit-member-accessibility': 'warn',
    '@typescript-eslint/naming-convention': [
      'warn',
      {
        selector: 'default',
        format: ['strictCamelCase'],
      },
      {
        selector: 'typeLike',
        format: ['StrictPascalCase'],
      },
      {
        selector: 'enumMember',
        format: ['StrictPascalCase'],
      },
      {
        selector: 'variable',
        format: ['strictCamelCase'],
        leadingUnderscore: 'allow',
      },
      {
        selector: 'parameter',
        format: ['strictCamelCase'],
        leadingUnderscore: 'allow',
      },
    ],
    '@typescript-eslint/no-dynamic-delete': 'warn',
    '@typescript-eslint/no-empty-function': 'off',
    '@typescript-eslint/no-empty-interface': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-floating-promises': 'warn',
    '@typescript-eslint/no-parameter-properties': 'warn',
    '@typescript-eslint/no-shadow': 'warn',
    '@typescript-eslint/no-unused-vars': ['warn', { argsIgnorePattern: '^_', varsIgnorePattern: '^_' }],
    '@typescript-eslint/no-unnecessary-type-assertion': 'warn',
    '@typescript-eslint/no-use-before-define': 'warn',
    '@typescript-eslint/prefer-readonly': 'warn',
  },
  overrides: [
    {
      files: '**/*.js',
      rules: {
        '@typescript-eslint/no-var-requires': 'off',
        '@typescript-eslint/explicit-function-return-type': 'off',
        '@typescript-eslint/explicit-member-accessibility': 'off',
      },
    },
    {
      files: '**/*.spec.ts',
      rules: {
        '@typescript-eslint/no-non-null-assertion': 'off',
      },
    },
  ],
};