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Functions·medium 18 min 75 XP

Higher-Order Function

Write withCallCount(fn) returning a wrapped function that tracks how many times it has been called via a .calls property.

Examples

  • const wrapped = withCallCount(fn); wrapped(); wrapped(); wrapped.calls → 2

Constraints

  • Keep the required function name so the tests can find it
  • Return a value instead of only logging it
  • Do not mutate inputs unless the challenge asks you to
Higher-Order Function · editor

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