feat: migrate from Bun to npm for better compatibility

README.md

@@ -14,22 +14,22 @@ An MCP (Model Context Protocol) server that provides access to Rust documentatio
 
 ## Installation
 
-This project uses Bun for development, but the built server can run with Node.js.
+This project uses npm for dependency management and TypeScript compilation.
 
 ```bash
 # Clone the repository
 git clone https://github.com/yourusername/rust-docs-mcp-server.git
 cd rust-docs-mcp-server
 
 # Install dependencies
-bun install
+npm install
 ```
 
 ## Building
 
 ```bash
 # Build the server
-bun run build
+npm run build
 ```
 
 This will create a build directory with the compiled JavaScript files.
@@ -38,10 +38,10 @@ This will create a build directory with the compiled JavaScript files.
 
 ```bash
 # Run the development server
-bun run dev
+npm run dev
 
 # Or run the built server
-bun run start
+npm run start
 ```
 
 ## Usage with MCP Clients
@@ -64,7 +64,7 @@ The server provides the following tools:
 
 ```bash
 # Run tests
-bun test
+npm test
 ```
 
 ## License

jest.config.js

@@ -0,0 +1,23 @@
+export default {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  rootDir: '.',
+  testMatch: ['<rootDir>/src/**/*.test.ts'],
+  collectCoverageFrom: [
+    'src/**/*.ts',
+    '!src/**/*.test.ts',
+    '!src/**/*.d.ts',
+  ],
+  coverageDirectory: 'coverage',
+  moduleFileExtensions: ['ts', 'js'],
+  transform: {
+    '^.+\\.ts$': ['ts-jest', {
+      tsconfig: 'tsconfig.test.json'
+    }],
+  },
+  testTimeout: 15000,
+  testPathIgnorePatterns: ['/node_modules/', '/build/'],
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1',
+  },
+};