feat: enhance project configuration with modern setup

[cheton]

PR Type

enhancement, tests

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Description

• Enhanced project configuration with modern setup using Babel and Rollup.
• Added comprehensive tests for the Controller class using Jest.
• Updated package scripts and dependencies for improved build and test processes.
• Added ESLint and npm ignore configurations.

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Changes walkthrough 📝

	Relevant files
Configuration changes	.eslintrc.js Add ESLint ignore rules for specific directories                  .eslintrc.js Added ESLint ignore rules for build, dist, and node_modules directories. +3/-0      babel.config.js Add Babel configuration with presets                                          babel.config.js Added Babel configuration file with presets. +6/-0      .eslintignore Add ESLint ignore file                                                                      .eslintignore Added ESLint ignore file for build, dist, and node_modules directories. +3/-0      .npmignore Update npm ignore file                                                                      .npmignore Updated npm ignore file to include package-lock.json and yarn.lock. +2/-3      rollup.config.mjs Add Rollup configuration for module bundling                          rollup.config.mjs Added Rollup configuration for module bundling. Configured output for CommonJS and ESM formats. +45/-0
Tests	controller.test.js Add tests for Controller class functionality                          src/tests/controller.test.js Added comprehensive tests for the Controller class. Included tests for connection, disconnection, and command execution. +153/-0
Documentation	LICENSE Update copyright notice                                                                    LICENSE Updated copyright notice to include 'present'. +1/-1
Enhancement	package.json Update package configuration and scripts                                  package.json Updated scripts for build, clean, and test processes. Updated dependencies and devDependencies. Added Jest configuration for testing. +46/-35

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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 3 🔵🔵🔵⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Test Coverage While the test coverage is comprehensive, verify that error cases and edge cases are properly tested, especially for socket connection failures and error callbacks Build Configuration The maxWorkers setting in Jest configuration is set to 2, which might impact test performance. Validate if this limitation is necessary Code Maintainability The external module resolution logic is simplified to a single-line condition. Consider adding more specific rules for better control over external dependencies

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PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Score
Possible issue	Declare critical runtime dependencies as peer dependencies to prevent version conflicts Add peer dependencies for socket.io-client since it's a critical runtime dependency for the controller functionality. package.json [33-35] "dependencies": {}, +"peerDependencies": { + "socket.io-client": "^4.0.0" +}, "devDependencies": { "@babel/cli": "^7.0.0", Apply this suggestion Suggestion importance[1-10]: 8 Why: Socket.io-client is a critical runtime dependency for the controller's functionality. Declaring it as a peer dependency helps prevent version conflicts and makes the dependency requirements explicit.	8
	✅ Implement proper test cleanup to prevent state leakage between test cases Add cleanup in the afterEach block to reset the socket and io mocks between tests to prevent potential test interference. src/tests/controller.test.js [7-17] beforeEach(() => { socketMock = { on: jest.fn(), emit: jest.fn(), destroy: jest.fn(), connected: true, }; ioMock = { connect: jest.fn().mockReturnValue(socketMock), }; }); +afterEach(() => { + jest.clearAllMocks(); + socketMock = null; + ioMock = null; +}); + [Suggestion has been applied] Suggestion importance[1-10]: 7 Why: Adding cleanup in afterEach is a good testing practice that prevents state leakage between tests and ensures test isolation. This is particularly important for mocks that are reused across multiple test cases.	7
General	Enable source maps generation for improved debugging experience Add sourcemap generation for better debugging capabilities in both development and production environments. rollup.config.mjs [17-25] output: { dir: cjsOutputDirectory, format: 'cjs', interop: 'auto', preserveModules: true, + sourcemap: true, }, Apply this suggestion Suggestion importance[1-10]: 5 Why: Adding source maps is beneficial for debugging and development, making it easier to trace issues back to the original source code. While useful, it's not critical for functionality.	5

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