feat: initialize TypeScript configuration and Vitest setup

- Add pnpm workspace configuration to specify built dependencies.
- Create tsconfig.json for TypeScript compiler options and module resolution.
- Add tsconfig.build.json for build-specific TypeScript settings.
- Set up Vitest configuration with path aliasing for testing.

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+	"recommendations": [
+		"biomejs.biome",
+	]
+}

.vscode/settings.json

@@ -0,0 +1,12 @@
+{
+	"[typescript]": {
+		"editor.defaultFormatter": "biomejs.biome",
+		"editor.formatOnSave": true
+	},
+	"editor.formatOnSave": true,
+	"search.exclude": {
+		"**/.git/": true,
+		"**/node_modules/": true,
+		"**/dist/": true
+	}
+}

biome.json

@@ -0,0 +1,55 @@
+{
+	"$schema": "https://biomejs.dev/schemas/2.4.3/schema.json",
+	"vcs": {
+		"enabled": true,
+		"clientKind": "git",
+		"useIgnoreFile": true
+	},
+	"files": {
+		"ignoreUnknown": false
+	},
+	"formatter": {
+		"enabled": true,
+		"formatWithErrors": false,
+		"indentStyle": "space",
+		"indentWidth": 2,
+		"lineEnding": "lf",
+		"lineWidth": 80,
+		"attributePosition": "auto",
+		"bracketSameLine": false,
+		"bracketSpacing": true,
+		"expand": "auto",
+		"useEditorconfig": true
+	},
+	"linter": {
+		"enabled": true,
+		"rules": {
+			"recommended": true,
+			"suspicious": {
+				"noExplicitAny": "off"
+			},
+			"style": {
+				"noNonNullAssertion": "off"
+			}
+		}
+	},
+	"javascript": {
+		"formatter": {
+			"quoteProperties": "asNeeded",
+			"trailingCommas": "all",
+			"semicolons": "asNeeded",
+			"arrowParentheses": "always",
+			"bracketSameLine": false,
+			"quoteStyle": "single",
+			"bracketSpacing": true
+		}
+	},
+	"assist": {
+		"enabled": true,
+		"actions": {
+			"source": {
+				"organizeImports": "on"
+			}
+		}
+	}
+}

package.json

@@ -4,10 +4,19 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "build": "rimraf ./dist && tsc -p tsconfig.build.json && tsc-alias -p tsconfig.build.json",
+    "prepare": "pnpm build"
   },
   "keywords": [],
   "author": "",
-  "license": "ISC",
-  "packageManager": "pnpm@10.30.1"
+  "license": "MIT",
+  "packageManager": "pnpm@10.30.1",
+  "devDependencies": {
+    "@biomejs/biome": "2.4.3",
+    "@types/node": "25.3.0",
+    "rimraf": "6.1.3",
+    "tsc-alias": "1.8.16",
+    "tsx": "4.21.0",
+    "vitest": "4.0.18"
+  }
 }

pnpm-workspace.yaml

@@ -0,0 +1,3 @@
+onlyBuiltDependencies:
+  - core-js
+  - esbuild

tsconfig.build.json

@@ -0,0 +1,10 @@
+{
+	"extends": "./tsconfig.json",
+	"compilerOptions": {
+		"rootDir": "./src",
+	},
+	"exclude": [
+		"tests/**/*",
+		"vitest.config.ts",
+	]
+}

tsconfig.json

@@ -0,0 +1,40 @@
+{
+  "compilerOptions": {
+    "target": "es2020",
+    "module": "nodenext",
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true,
+    "rootDir": "./",
+    "outDir": "./dist",
+    "moduleResolution": "nodenext",
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "noUnusedLocals": true,
+    "noFallthroughCasesInSwitch": true,
+    "moduleDetection": "force",
+    "isolatedModules": true,
+    "removeComments": true,
+    "skipLibCheck": true,
+    "baseUrl": "./",
+    "paths": {
+      "@/*": [
+        "./src/*"
+      ]
+    },
+    "plugins": [
+      {
+        "transform": "typescript-transform-paths"
+      },
+      {
+        "transform": "typescript-transform-paths",
+        "afterDeclarations": true
+      }
+    ]
+  },
+  "include": [
+    "src/**/*",
+    "tests/**/*",
+  ],
+}

vitest.config.ts

@@ -0,0 +1,13 @@
+import path from 'node:path'
+import { defineConfig } from 'vitest/config'
+
+export default defineConfig({
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    },
+  },
+  test: {
+    environment: 'node',
+  },
+})