Writing JavaScript code in TypeScript for Nuxt applications can significantly reduce errors and enhance collaboration among developers, although it requires the integration of additional libraries beyond the built-in Nuxt support. This comprehensive guide walks through the process of creating a Nuxt.js application entirely in TypeScript, detailing the installation of necessary packages, manual configuration of files, and the implementation of TypeScript features such as basic typing, Vuex typing, and class-based API usage. The guide covers advanced TypeScript functionality, including decorators for props, computed properties, methods, watchers, and Vuex modules, demonstrating how to leverage these features for a more robust and maintainable code base. By incorporating TypeScript, developers can achieve more reliable and collaborative coding environments, ultimately leading to fewer bugs and smoother workflows. Additionally, tools like LogRocket and its Galileo AI offer advanced monitoring and replay capabilities to further support developers in understanding user interactions with web and mobile applications.