chore: Add ESLint

.circleci/config.yml

@@ -51,8 +51,8 @@ jobs:
       - checkout
       - setup
       - run:
-          name: Prepack
-          command: yarn prepack
+          name: Build
+          command: yarn build
 
   check-peer:
     docker:

.eslintrc.js

@@ -0,0 +1,72 @@
+module.exports = {
+  root: true,
+
+  env: {
+    es6: true,
+    node: true,
+    browser: true,
+    jest: true,
+    'shared-node-browser': true,
+  },
+
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    ecmaFeatures: { jsx: true },
+  },
+
+  extends: [
+    'eslint:recommended',
+    'plugin:@typescript-eslint/recommended',
+    'prettier',
+  ],
+  plugins: ['@typescript-eslint'],
+  rules: {
+    'no-implicit-coercion': 'error',
+    'no-warning-comments': [
+      'warn',
+      {
+        terms: ['TODO', 'FIXME', 'XXX', 'BUG'],
+        location: 'anywhere',
+      },
+    ],
+    curly: ['error', 'all'],
+    eqeqeq: ['error', 'always', { null: 'ignore' }],
+
+    // Hoisting을 전략적으로 사용한 경우가 많아서
+    '@typescript-eslint/no-use-before-define': 'off',
+    // 모델 정의 부분에서 class와 interface를 합치기 위해 사용하는 용법도 잡고 있어서
+    '@typescript-eslint/no-empty-interface': 'off',
+    // 모델 정의 부분에서 파라미터 프로퍼티를 잘 쓰고 있어서
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/no-parameter-properties': 'off',
+    '@typescript-eslint/no-var-requires': 'warn',
+    '@typescript-eslint/no-non-null-asserted-optional-chain': 'warn',
+    '@typescript-eslint/no-inferrable-types': 'warn',
+    '@typescript-eslint/no-empty-function': 'off',
+    '@typescript-eslint/naming-convention': [
+      'error',
+      { format: ['camelCase', 'UPPER_CASE', 'PascalCase'], selector: 'variable', leadingUnderscore: 'allow' },
+      { format: ['camelCase', 'PascalCase'], selector: 'function' },
+      { format: ['PascalCase'], selector: 'interface' },
+      { format: ['PascalCase'], selector: 'typeAlias' },
+    ],
+    '@typescript-eslint/explicit-module-boundary-types': 'off',
+    '@typescript-eslint/array-type': ['error', { default: 'array-simple' }],
+    '@typescript-eslint/no-unused-vars': ['error', { ignoreRestSiblings: true }],
+    '@typescript-eslint/member-ordering': [
+      'error',
+      {
+        default: [
+          'public-static-field',
+          'private-static-field',
+          'public-instance-field',
+          'private-instance-field',
+          'public-constructor',
+          'private-constructor',
+          'public-instance-method',
+          'private-instance-method',
+        ],
+      },
+    ],
+  },
+};

package.json

@@ -26,6 +26,10 @@
     "@changesets/cli": "^2.27.1",
     "@netlify/plugin-nextjs": "^5.0.0",
     "@types/node": "^20.11.30",
+    "@typescript-eslint/eslint-plugin": "^5.39.0",
+    "@typescript-eslint/parser": "^5.39.0",
+    "eslint": "^7",
+    "eslint-config-prettier": "^8.5.0",
     "prettier": "^3.2.5",
     "tsup": "^8.0.2",
     "typescript": "^5.4.3",