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Rule priority, scope & exceptions
Use this to align rules with the senior-level structure (P0/P1/P2, scope, exceptions/tradeoffs).
fullstack ruleP1universalStack: javascript
referencesmutationcorrectnessgotcha
Be deliberate about value-copy versus reference semantics
When refactoring, verify whether a value is passed by reference or copied, since that can change behavior such as shared mutations.
PR: hegnar-web · org-mining-hist-2026-06Created: Jun 19, 2026
Bad example
Old codejavascript
| 1 | const copy = { ...state }; // expecting mutations to propagate to state |
Explanation (EN)
Objašnjenje (HR)
Good example
New codejavascript
| 1 | // mutate the original reference if shared state is intended |
| 2 | state.field = next; |
Explanation (EN)
Objašnjenje (HR)