Chris Ferdinandi stops by to teach us how to build a JavaScript library from scratch, using a few different methods! Check here for resources: In order to learn some best practices, we'll build a date library from the ground up. We'll start simple and then layer in features through a series of edits and enhancements. We'll discuss a wide range of use cases and weigh the pros and cons. Here's a rough outline for what we'll be learning today... 1. Creating a simple utility library 2. Making the library modular and tree-shakeable with ES modules 3. Converting it to a chainable, immutable library with OOP 4. Providing developers with hooks to customize how it works 5. Bundling a library for distribution and performance Broadcasted live on Twitch -- Watch live at