.betterer.ts

import { typescript } from '@betterer/typescript';
import { eslint } from '@betterer/eslint';

export default {
  'stricter ts': () =>
    typescript('./tsconfig.json', {
      strict: true,
      noImplicitAny: true,
    })
    .include('./src/**/*.ts')
    .include('./src/**/*.tsx'),

  // eslint rules copied from github because betterer/eslint doesn't support extends configs
  'eslint recommended rules': () =>
    // same as extends['eslint:recommended']
    // https://github.com/eslint/eslint/blob/main/conf/eslint-recommended.js
    
    eslint({
      'constructor-super': 'error',
      'for-direction': 'error',
      'getter-return': 'error',
      'no-async-promise-executor': 'error',
      'no-case-declarations': 'error',
      'no-class-assign': 'error',
      'no-compare-neg-zero': 'error',
      'no-cond-assign': 'error',
      'no-const-assign': 'error',
      'no-constant-condition': 'error',
      'no-control-regex': 'error',
      'no-debugger': 'error',
      'no-delete-var': 'error',
      'no-dupe-args': 'error',
      'no-dupe-class-members': 'error',
      'no-dupe-else-if': 'error',
      'no-dupe-keys': 'error',
      'no-duplicate-case': 'error',
      'no-empty': 'error',
      'no-empty-character-class': 'error',
      'no-empty-pattern': 'error',
      'no-ex-assign': 'error',
      'no-extra-boolean-cast': 'error',
      'no-extra-semi': 'error',
      'no-fallthrough': 'error',
      'no-func-assign': 'error',
      'no-global-assign': 'error',
      'no-import-assign': 'error',
      'no-inner-declarations': 'error',
      'no-invalid-regexp': 'error',
      'no-irregular-whitespace': 'error',
      'no-loss-of-precision': 'error',
      'no-misleading-character-class': 'error',
      'no-mixed-spaces-and-tabs': 'error',
      'no-new-symbol': 'error',
      'no-nonoctal-decimal-escape': 'error',
      'no-obj-calls': 'error',
      'no-octal': 'error',
      'no-prototype-builtins': 'error',
      'no-redeclare': 'error',
      'no-regex-spaces': 'error',
      'no-self-assign': 'error',
      'no-setter-return': 'error',
      'no-shadow-restricted-names': 'error',
      'no-sparse-arrays': 'error',
      'no-this-before-super': 'error',
      'no-undef': 'error',
      'no-unexpected-multiline': 'error',
      'no-unreachable': 'error',
      'no-unsafe-finally': 'error',
      'no-unsafe-negation': 'error',
      'no-unsafe-optional-chaining': 'error',
      'no-unused-labels': 'error',
      'no-unused-vars': 'error',
      'no-useless-backreference': 'error',
      'no-useless-catch': 'error',
      'no-useless-escape': 'error',
      'no-with': 'error',
      'require-yield': 'error',
      'use-isnan': 'error',
      'valid-typeof': 'error'
    })
    .include('./src/**/*.ts')
    .include('./src/**/*.tsx'),

  'eslint ts stricter type checking': () =>
    // same as extends['plugin:@typescript-eslint/recommended-requiring-type-checking']
    // https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/src/configs/recommended-requiring-type-checking.ts 
    eslint({
        '@typescript-eslint/await-thenable': 'error',
        '@typescript-eslint/no-floating-promises': 'error',
        '@typescript-eslint/no-for-in-array': 'error',
        'no-implied-eval': 'off',
        '@typescript-eslint/no-implied-eval': 'error',
        '@typescript-eslint/no-misused-promises': 'error',
        '@typescript-eslint/no-unnecessary-type-assertion': 'error',
        '@typescript-eslint/no-unsafe-argument': 'error',
        '@typescript-eslint/no-unsafe-assignment': 'error',
        '@typescript-eslint/no-unsafe-call': 'error',
        '@typescript-eslint/no-unsafe-member-access': 'error',
        '@typescript-eslint/no-unsafe-return': 'error',
        'require-await': 'off',
        '@typescript-eslint/require-await': 'error',
        '@typescript-eslint/restrict-plus-operands': 'error',
        '@typescript-eslint/restrict-template-expressions': 'error',
        '@typescript-eslint/unbound-method': 'error',
    })
    .include('./src/**/*.ts')
    .include('./src/**/*.tsx')
};