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Bundle Size and Typing Improvements

Explore how RxJS 7 improves front-end performance by reducing library bundle size and enhancing TypeScript typings. Understand the impact on application load times, operator costs, and stricter compile-time type checks to prevent runtime errors.

Exploring the bundle size improvements

Every front-end application needs a number of JavaScript files to run. These files are either the ones we’ve written ourselves or the external dependencies used to build the application, such as Moment.js, Lodash, or RxJS. A bundle is an output of a process that merges all these files into a few (if not single) files in the most optimized way possible.

One of the major approaches commonly used to improve front-end performance is reducing the JavaScript ...