feat: add linting with eslint and prettier

.eslintignore

@@ -0,0 +1,4 @@
+node_modules
+dist
+coverage
+*.d.ts

.eslintrc.json

@@ -0,0 +1,18 @@
+{
+  "parser": "@typescript-eslint/parser",
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended",
+    "plugin:prettier/recommended"
+  ],
+  "env": {
+    "node": true,
+    "es6": true,
+    "jest": true
+  },
+  "parserOptions": {
+    "ecmaVersion": 2020,
+    "sourceType": "module"
+  },
+  "rules": {}
+}

.github/workflows/lint.yml

@@ -0,0 +1,29 @@
+name: Lint
+
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+    branches: [main, master]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run lint
+        run: npm run lint
+
+      - name: Run prettier check
+        run: npm run prettier

.github/workflows/publish.yml

@@ -3,10 +3,10 @@ name: Publish Package
 on:
   push:
     tags:
-      - 'v*'
+      - "v*"
 
 permissions:
-  id-token: write  # Required for OIDC
+  id-token: write # Required for OIDC
   contents: read
 
 jobs:
@@ -17,8 +17,8 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: '20'
-          registry-url: 'https://registry.npmjs.org'
+          node-version: "20"
+          registry-url: "https://registry.npmjs.org"
 
       # Ensure npm 11.5.1 or later is installed
       - name: Update npm

.prettierignore

@@ -0,0 +1,4 @@
+node_modules
+dist
+coverage
+package-lock.json

jest.config.js

@@ -1,17 +1,13 @@
 export default {
-  preset: 'ts-jest',
-  testEnvironment: 'node',
-  roots: ['<rootDir>/src'],
-  testMatch: ['**/__tests__/**/*.ts', '**/?(*.)+(spec|test).ts'],
+  preset: "ts-jest",
+  testEnvironment: "node",
+  roots: ["<rootDir>/src"],
+  testMatch: ["**/__tests__/**/*.ts", "**/?(*.)+(spec|test).ts"],
   transform: {
-    '^.+\\.ts$': 'ts-jest',
+    "^.+\\.ts$": "ts-jest",
   },
-  collectCoverageFrom: [
-    'src/**/*.ts',
-    '!src/**/*.test.ts',
-    '!src/**/*.d.ts',
-  ],
+  collectCoverageFrom: ["src/**/*.ts", "!src/**/*.test.ts", "!src/**/*.d.ts"],
   moduleNameMapper: {
-    '^(\\.{1,2}/.*)\\.js$': '$1',
+    "^(\\.{1,2}/.*)\\.js$": "$1",
   },
-};
+};