Declarative Filter then Map

Modern JavaScriptmedium

Course · Section 17: Modern JavaScript Development: Modules, Tooling, and Functional · Lecture 294: Declarative and Functional JavaScript Principles

Implement `activeNames(users)` returning the names of users whose `active` is true, using `filter` then `map`.

Input: activeNames([{"name":"A","active":true},{"name":"B","active":false}])

Output: ["A"]

Input: activeNames([])

Output: []

+ 1 hidden test run on Submit.

Common pitfalls

Approach & explanation (try first)

Filtering the active users then mapping to names reads as a clear data transformation.

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