The article provides a comprehensive tutorial on building a TypeScript application using Bazel, an open-source build and test tool originally developed by Google. The tutorial covers the setup of a Bazel workspace, the creation and configuration of a TypeScript project using Bazel rules, and the addition of tests with Jest. It illustrates the advantages of Bazel, such as its ability to provide fast, incremental, and customizable builds across multiple languages and platforms through features like remote execution and caching. Additionally, the tutorial demonstrates how to publish the built project to npm. While Bazel offers powerful capabilities for managing complex projects, it also poses a steep learning curve for developers, especially in large repositories. The article suggests Earthly as a simpler alternative, emphasizing its ease of use and compatibility with various languages and continuous integration systems. It concludes by encouraging developers to choose the right tool based on their specific project needs and constraints.