How using bundle-wizard can help you build faster web apps

Bundle-wizard is a tool designed to help developers identify and analyze the JavaScript code loaded by web applications, particularly focusing on entry points like login or landing pages. It allows users to visualize and explore JavaScript bundles, including first-party code, third-party scripts, and libraries like React, providing insights into which parts of the code are actually executed during page load. This can help pinpoint inefficiencies and unnecessary code, particularly in the context of optimizing startup performance for users on slower connections or less powerful devices. The tool highlights the importance of understanding the JavaScript footprint by showcasing how excessive or poorly prioritized scripts can lead to long load times and unresponsive user interfaces. By offering a way to investigate the size and execution time of script bundles, bundle-wizard aids in optimizing web performance, although it advises using additional resources like Chrome DevTools for deeper analysis of long tasks during script execution.