Functional programming topics in JavaScript: immutability, map/filter/reduce, and composition basics
JavaScript supports functional patterns through immutable updates, transformation helpers, and composing small functions into larger pipelines.
- Immutability reduces accidental shared-state bugs
- `map`, `filter`, and `reduce` support declarative transforms
- Composition connects small reusable functions
Functional programming topics in JavaScript: immutability, map/filter/reduce, and composition basics