Ensuring high-quality front-end code is essential for user satisfaction and product development efficiency, and various tools and practices can help achieve this. Linting, such as using ESLint for JavaScript and TSLint for TypeScript, automatically detects problematic patterns and enforces style guidelines, while code formatting tools like Prettier enhance code readability by automatically applying consistent styling. Static type checking, especially with TypeScript, helps identify errors early by adding a static type system on top of JavaScript. Automated testing, including unit tests with Jest and end-to-end tests with Cypress, provides confidence in code functionality, although they require significant effort to implement. Using frameworks like React, Vue, or Angular can minimize code volume and reduce potential bugs, but care must be taken to avoid performance issues from excessive dependencies. Performance monitoring is crucial, and tools like Chrome DevTools can help identify bottlenecks. Promoting pure functions can prevent subtle bugs by avoiding side effects. Regular cross-browser checks ensure compatibility, and error reporting tools can catch production bugs proactively. Implementing these strategies can significantly reduce bugs, leading to a more stable product and ultimately happier users.