vue-doctor/performance/js-set-map-lookups

Convert the array to a Set before the loop for O(1) lookups instead of O(n)

Property	Value
Category	Performance
Default Severity	warning
Confidence	medium
Fixable	No
Engine	oxlint
Since	v1.0.0
Frameworks	vue, nuxt
Test files	Not checked (which files)

Why it matters

Convert the array to a Set before the loop for O(1) lookups instead of O(n)

How to fix

Review the finding and update the code according to best practices below.

Agent Guidance

Convert the array used for includes/indexOf lookups inside the loop into a Set created once before the loop. Small constant lists (an array literal of up to 16 elements that is never grown) are not reported: a linear scan over them is as fast as hashing.

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Rule source: vue-doctor/performance/js-set-map-lookups