Modern ES Modules, Error Handling, Regex & Memory Leaks
Engineer production-ready architectures: static ESM module graphs, custom error hierarchies with Error.cause, ReDoS-safe regex, and heap snapshot leak profiling.
Experience building multi-component or multi-file JavaScript applications.
Structure codebases using native ES Modules, design custom error hierarchies with Error.cause, and diagnose heap memory leaks.
Read in order, or jump to what you need.
Every lesson builds on the one before it. Open any lesson to read the explanation, run the examples, and try the practice challenges.
- 09.01ES Modules Architecture: Static Graphs, Live Bindings & Dynamic import()4 min
Deconstruct ECMAScript Modules (ESM). Explore static dependency graphs, live variable bindings, circular dependency handling, and lazy-loading via dynamic import().
- 09.02Enterprise Error Architecture: Subclassing Error, Error.cause & Structured Logging4 min
Build robust, diagnostic-rich error architectures. Subclass the native Error class, preserve stack traces, chain upstream exceptions using Error.cause, and format structured logs.
- 09.03The ECMAScript RegExp Engine: Lookaheads, Named Groups & Catastrophic Backtracking4 min
Harness the power of regular expressions safely. Master modern named capture groups, lookahead and lookbehind assertions, and defend against ReDoS catastrophic backtracking.
- 09.04Chrome DevTools & Node.js Heap Profiling: Hunting Down Memory Leaks4 min
Master runtime memory forensics. Learn to capture and compare Chrome DevTools Heap Snapshots, identify detached DOM nodes, fix closure leaks, and profile Node.js services.
Ready to move on?
Identify and resolve intentional memory leaks using Chrome DevTools heap profiling.
Open the module self-check