style: add ESLint and Prettier configuration files

- Add .eslintrc.js with TypeScript support and comprehensive linting rules
- Configure ESLint to enforce code style including indentation, quotes, and semicolons
- Add .prettierrc with formatting standards for consistent code formatting
- Set print width to 120 characters and use 2-space indentation
- Establish consistent code style across the TypeScript project to improve code quality and maintainability

Author: JimmyDaddy

.eslintrc.js

@@ -0,0 +1,48 @@
+module.exports = {
+  parser: '@typescript-eslint/parser',
+  plugins: ['@typescript-eslint'],
+  extends: [
+    'eslint:recommended',
+    '@typescript-eslint/recommended',
+  ],
+  parserOptions: {
+    ecmaVersion: 2020,
+    sourceType: 'module',
+  },
+  env: {
+    node: true,
+    es6: true,
+  },
+  rules: {
+    // TypeScript specific rules
+    '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
+    '@typescript-eslint/no-explicit-any': 'warn',
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/explicit-module-boundary-types': 'off',
+    '@typescript-eslint/no-non-null-assertion': 'warn',
+    
+    // General rules
+    'no-console': 'off', // Allow console in examples and tests
+    'prefer-const': 'error',
+    'no-var': 'error',
+    'object-shorthand': 'error',
+    'prefer-template': 'error',
+    
+    // Code style
+    'indent': ['error', 2],
+    'quotes': ['error', 'single'],
+    'semi': ['error', 'always'],
+    'comma-dangle': ['error', 'never'],
+    'no-trailing-spaces': 'error',
+    'eol-last': 'error',
+  },
+  ignorePatterns: [
+    'dist/',
+    'build/',
+    'node_modules/',
+    'deps/',
+    'Release/',
+    'coverage/',
+    '*.js' // Ignore JS files in root (like this config file)
+  ],
+};

.prettierrc

@@ -0,0 +1,11 @@
+{
+  "semi": true,
+  "trailingComma": "none",
+  "singleQuote": true,
+  "printWidth": 120,
+  "tabWidth": 2,
+  "useTabs": false,
+  "bracketSpacing": true,
+  "arrowParens": "avoid",
+  "endOfLine": "lf"
+}

package.json

@@ -38,7 +38,10 @@
     "test:dev": "npm run build:dev && node --expose-gc --max-old-space-size=4096 vitest",
     "test:coverage": "npm run build:test && npm run vitest:coverage",
     "test:watch": "npm run build:ts && vitest --watch",
-    "clean:ts": "tsc -b --clean"
+    "clean:ts": "tsc -b --clean",
+    "lint": "eslint src/**/*.ts --fix",
+    "format": "prettier --write src/**/*.ts example/**/*.ts",
+    "validate": "npm run lint && npm run test:dryrun"
   },
   "dependencies": {
     "bindings": "^1.5.0"
@@ -50,6 +53,11 @@
     "cmake-js": "^7.4.0",
     "node-addon-api": "^8.5.0",
     "typescript": "^5.7.2",
-    "vitest": "^4.0.18"
+    "vitest": "^4.0.18",
+    "eslint": "^9.0.0",
+    "@typescript-eslint/eslint-plugin": "^8.0.0",
+    "@typescript-eslint/parser": "^8.0.0",
+    "prettier": "^3.0.0",
+    "ts-node": "^10.9.0"
   }
 }