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JavaScript Medium Theory

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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 #immutability #javascript

Functional programming topics in JavaScript: immutability, map/filter/reduce, and composition basics