These tools can enhance your workflow, increase productivity, and enable you to write more robust and maintainable code:

1. TypeScript: Adds static typing to JavaScript, which can make code easier to understand and debug.
2. ESLint: A popular linting tool that helps to enforce coding standards and find potential errors.
3. Prettier: An opinionated code formatter that enforces a consistent code style across your project.
4. Babel: Allows you to use the latest ECMAScript features by converting modern JavaScript code into a version that's compatible with most browsers.
5. Webpack: A powerful module bundler that can handle bundling JavaScript files, CSS, images, and more for deployment.
6. Node.js: Essential for server-side programming, enabling JavaScript to be used outside the browser.
7. npm/Yarn: Package managers that allow you to easily include third-party libraries and manage dependencies.
8. Jest: A testing framework that can help you write tests for your JavaScript code to ensure it's working as intended.
9. Immutable.js: Libraries such as Immutable.js provide persistent immutable data structures.
10. React/Vue/Angular: Popular JavaScript frameworks and libraries for building interactive web applications.
11. Redux/MobX: State management libraries that help in managing state in large-scale applications, often used with React.
12. Sass/LESS: CSS preprocessors that extend CSS with features like variables and nested rules.
13. GraphQL: A query language for APIs, which enables more efficient data retrieval.
14. RxJS: A library for reactive programming, providing tools for composing asynchronous and event-based code.
15. Storybook: A tool for developing UI components in isolation.
16. Husky: Can prevent bad git commit, git push, and more by using hooks.