.agents/skills/vercel-react-best-practices/rules/js-cache-property-access.md
Nicholai 75168f7678 init: agent event bus + state
structure:
  state/CURRENT.md — 2-4 line session state (rewritten each session)
  events/ — json event bus (pull-based, optional context)
  persistent/ — important decisions (one doc per decision)
  emit — helper script for emitting events
2026-01-24 03:27:11 -07:00

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title impact impactDescription tags
Cache Property Access in Loops LOW-MEDIUM reduces lookups javascript, loops, optimization, caching

Cache Property Access in Loops

Cache object property lookups in hot paths.

Incorrect (3 lookups × N iterations):

for (let i = 0; i < arr.length; i++) {
  process(obj.config.settings.value)
}

Correct (1 lookup total):

const value = obj.config.settings.value
const len = arr.length
for (let i = 0; i < len; i++) {
  process(value)
}