JavaScript with Node (Beyond the Basics) training course

1. Modern JavaScript: Syntax, Tooling, Runtime

• ESM workflow, package scripts
• Vitest
• Lint
• Build tools
• Modern syntax
• Debugging workflow

2. Functions Deep Dive: Scope, Closures, this, and Modules

• Lexical scope + closures
• Factories, private state, partial application
• this rules, arrow functions, binding, and avoiding context bugs
• Modules: ESM imports/exports, default vs named, designing clean boundaries

3. Objects & Prototypes: How JavaScript Really Does OOP

• Prototype chain, property lookup, and why class is mostly syntax sugar
• Objects vs Maps/Sets, and picking structures for clarity and performance
• Composition vs inheritance: what’s idiomatic in modern JS

4. Types, Coercion, and “Weird JS” You Need to Know

• Primitives vs objects, truthiness, == vs ===, and coercion traps
• Numbers, NaN, BigInt, and precision gotchas (money, timestamps, floats)
• Edge cases that cause real bugs (null/undefined, 0/-0, Object.is)

5. Async JavaScript: Promises, async/await, Events, and Concurrency

• Promise fundamentals: chaining, error handling, and avoiding “promise soup”
• Concurrency patterns: all, allSettled, timeouts, retries, cancellation with AbortController
• Async / Await
• Event loop mental model and common async pitfalls

6. Functional JS Patterns: Immutability, Composition, and Practical FP

• Immutability in practice: copying strategies and avoiding accidental mutation
• Composition: map/filter/reduce, pipelines, pure functions, and side-effect boundaries
• Practical FP tools: currying, memoization, and when FP genuinely helps