| 1 | /**
|
| 2 | * TypeScript Configs:
|
| 3 | * Extends Airbnb and uses Prettier for all formatting related linting.
|
| 4 | * TypeScript parser is specified for ESLint and Prettier, rules that are better
|
| 5 | * handled by TS compiler are turned off.
|
| 6 | */
|
| 7 | const config = {
|
| 8 | extends: ['airbnb', 'prettier', 'prettier/react'],
|
| 9 | parserOptions: {
|
| 10 | ecmaVersion: 8,
|
| 11 | sourceType: 'module',
|
| 12 | ecmaFeatures: {
|
| 13 | jsx: true,
|
| 14 | },
|
| 15 | },
|
| 16 | parser: 'typescript-eslint-parser',
|
| 17 | plugins: ['prettier'],
|
| 18 | // NOTE: Currently we are turning off the eslint-plugin-import rules. If the TS
|
| 19 | // parser and the plugin are updated to the point that they work well together,
|
| 20 | // these settings need to be included to override the Airbnb settings.
|
| 21 | // settings: {
|
| 22 | // 'import/resolver': {
|
| 23 | // node: {
|
| 24 | // extensions: ['.js', '.jsx', '.ts', '.tsx']
|
| 25 | // }
|
| 26 | // },
|
| 27 | // 'import/extensions': ['.js', '.jsx', '.ts', '.tsx'],
|
| 28 | // 'import/parsers': {
|
| 29 | // 'typescript-eslint-parser': ['.ts', '.tsx']
|
| 30 | // }
|
| 31 | // },
|
| 32 | env: {
|
| 33 | browser: true,
|
| 34 | node: true,
|
| 35 | },
|
| 36 | rules: {
|
| 37 | // Allow use of named functions before declared, they are hoisted and this makes
|
| 38 | // it possible to declare propTypes at top of component files
|
| 39 | 'no-use-before-define': ['error', { functions: false }],
|
| 40 | // Allow console logs in development, and upgrade them to error in test
|
| 41 | 'no-console': 'off',
|
| 42 |
|
| 43 | // Turn off ESLint rules handled by TypeScript compiler
|
| 44 | 'no-unused-vars': 'off',
|
| 45 | 'no-undef': 'off',
|
| 46 |
|
| 47 | // Turn off eslint-plugin-import rules handled by TypeScript compiler
|
| 48 | 'import/no-unresolved': 'off',
|
| 49 | 'import/extensions': 'off',
|
| 50 | 'import/no-duplicates': 'off',
|
| 51 | },
|
| 52 | }
|
| 53 |
|
| 54 | // Lint for prettier only in TEST envs
|
| 55 | if (process.env.NODE_ENV === 'test') {
|
| 56 | Object.assign(config.rules, {
|
| 57 | 'prettier/prettier': [
|
| 58 | 'error',
|
| 59 | { singleQuote: true, printWidth: 84, semi: false },
|
| 60 | ],
|
| 61 | 'no-console': 'error',
|
| 62 | })
|
| 63 | }
|
| 64 |
|
| 65 | module.exports = config
|