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Rule priority, scope & exceptions
Use this to align rules with the senior-level structure (P0/P1/P2, scope, exceptions/tradeoffs).
frontend ruleP2universalStack: TypeScript
typescripttypesvoid
Know that a function returning void can fill an undefined slot
TypeScript treats a void return as compatible with undefined; you can return undefined from helpers without an extra ?? undefined coercion.
PR: hegnar-bellsheep-web · org-mining-hist-2026-06Created: Jun 18, 2026
Bad example
Old codets
| 1 | const fromDate = getStartDateForRange(range) ?? undefined; // helper returns Date | void |
Explanation (EN)
Objašnjenje (HR)
Good example
New codets
| 1 | function getStartDateForRange(range: string): Date | undefined { /* ... */ } |
| 2 | const fromDate = getStartDateForRange(range); |
Explanation (EN)
Objašnjenje (HR)