Support `onScroll`

[hyochan]

Description

Support onScroll

Related Issues

Resolve #26

Tests

N/A

Checklist

Before you create this PR confirms that it meets all requirements listed below by checking the relevant checkboxes ([x]). This will ensure a smooth and quick review process.

• [x] I read the Contributor Guide and followed the process outlined there for submitting PRs.
• [x] Run yarn lint && yarn tsc
• [x] Run yarn test or yarn test -u if you need to update snapshot.
• [x] I am willing to follow-up on review comments in a timely manner.

[codecov[bot]]

Codecov Report

Merging #31 (b9a0bc4) into main (adb81fe) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main       #31   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            1         1           
  Lines           34        36    +2     
  Branches        13        13           
=========================================
+ Hits            34        36    +2     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
index.tsx	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update adb81fe...b9a0bc4. Read the comment docs.