fix: add missing forEach/countBy exports to map and set

[umsungjun]

Implementations, tests, and docs already exist, but the exports were missing from the index files, so added them.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
es-toolkit	Ready	Preview, Comment	Apr 23, 2026 7:10am

[Copilot]

Pull request overview

This PR fixes missing public exports for existing countBy/forEach utilities in the map and set modules by updating their respective index barrels so consumers can import these functions via the module entrypoints.

Changes:

• Export forEach from src/set/index.ts.
• Export countBy and forEach from src/map/index.ts.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/set/index.ts	Adds the missing forEach re-export for the set utilities barrel.
src/map/index.ts	Adds the missing countBy and forEach re-exports for the map utilities barrel.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.85%. Comparing base (95111dd) to head (cbe5d73).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1695   +/-   ##
=======================================
  Coverage   99.85%   99.85%           
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  Files         498      498           
  Lines        4667     4667           
  Branches     1354     1354           
=======================================
  Hits         4660     4660           
  Misses          7        7           

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[raon0211]

Thanks for spotting this!