feat: [performance improvement]#291
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Replaced O(N) array traversals (Object.entries().find()) with O(1) object key lookups in getEditionNavigation logic. Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
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Code Review
This pull request simplifies the navigation logic in lib/shared/navigation.ts by replacing complex Object.entries lookups with direct property access. The feedback suggests removing a redundant type assertion when accessing the conditions object, as TypeScript can safely resolve the lookup without it.
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| if (!link.condition) return true; | ||
| const conditionValue = Object.entries(conditions).find(([key]) => key === link.condition)?.[1]; | ||
| return !!conditionValue; | ||
| return !!conditions[link.condition as keyof typeof conditions]; |
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The type assertion as keyof typeof conditions is redundant. Since link.condition is of type NavCondition (after the null/undefined check) and conditions is explicitly typed as Record<NavCondition, boolean>, TypeScript can resolve this lookup safely without the assertion.
| return !!conditions[link.condition as keyof typeof conditions]; | |
| return !!conditions[link.condition]; |
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💡 What:
Replaced
Object.entries().find()with direct object key access inlib/shared/navigation.tsfor looking up values in thecfpDataandconditionsobjects.🎯 Why:
Using
Object.entries(obj).find(([k]) => k === key)?.[1]unnecessarily allocates a new array of all key-value pairs in memory and then performs a linear, O(n) search across the array every time the filter runs. Replacing this withobj[key]achieves the exact same functionality via a direct dictionary lookup, saving memory allocations and lowering CPU overhead inside loop iterations.📊 Impact:
Transforms O(N) lookup complexity into O(1) constant time complexity for condition evaluations during navigation rendering. Reduces unnecessary object allocations and Garbage Collection pressure, slightly improving build times and dynamic rendering performance.
🔬 Measurement:
No regressions. All unit tests,
npm run test, andnpm run buildcompleted successfully, ensuring the fast paths resolve conditions identically to the old unoptimized approach.PR created automatically by Jules for task 9130249988877009582 started by @anyulled