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Rule priority, scope & exceptions
Use this to align rules with the senior-level structure (P0/P1/P2, scope, exceptions/tradeoffs).
backend ruleP2universalStack: typescript
performancecollectionsreadabilityordering
Filter a collection before mapping it
Apply filter prior to map so you only transform the items you keep, avoiding wasted work.
PR: vinify-backend · org-mining-deep-2026-06Created: Jun 17, 2026
Bad example
Old codetypescript
| 1 | items.map(toDto).filter(d => d.active); |
Explanation (EN)
Objašnjenje (HR)
Good example
New codetypescript
| 1 | items.filter(i => i.active).map(toDto); |
Explanation (EN)
Objašnjenje (HR)