// courses
Several posts, one topic, in order.
No filler. Each course is a sequence of lessons that build on each other — watch, read, steal the code.
- $ el337 --course13 lessons
Mastering Astryx
Master Astryx, an open-source design system built on StyleX. Learn core design primitives, layout engines, token systems, and construct a full production-ready modular Kanban board application step by step.
- $ el337 --course8 lessons
Build an AI Agent in Typescript
Learn the fundamentals of building your own coding agent harness
- $ el337 --course11 lessons
JavaScript Regular Expressions
A comprehensive series covering modern JavaScript regular expressions from the ground up.
- $ el337 --course4 lessons
Master SVG Path: From Basics to Beautiful Curves
Learn to truly understand the SVG path d attribute—the language of vector geometry on the web. This course walks you through each command (M, L, C, Q, A, and more) step by step, explaining what they do, how they relate, and how to visualize their effects. By the end, you’ll be able to read, write, and debug any SVG path with confidence—and see the structure behind every curve.
- $ el337 --course7 lessons
Web Animations API
Learn how to create smooth, performant, and fully scriptable animations using the native Web Animations API. This course covers the essentials—keyframes, timing options, playback control, and sequencing—without relying on external libraries. You’ll gain a solid understanding of how the browser handles animation under the hood and how to use JavaScript to bring motion to any element with precision and control.