Correct minor error with parameter required error in derive.

[aljones15]

No description provided.

[dlongley]

See suggestion. Also, we might want to target this at another branch to avoid a big rebase operation.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 88.66%. Comparing base (f7cf40c) to head (4a7cc42).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #178      +/-   ##
==========================================
- Coverage   88.77%   88.66%   -0.11%     
==========================================
  Files           4        4              
  Lines         811      812       +1     
==========================================
  Hits          720      720              
- Misses         91       92       +1     

Files	Coverage Δ
lib/index.js	89.06% <0.00%> (-0.13%)	⬇️

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