Rules Hub
Coding Rules Library
← Back to all rules
Rule priority, scope & exceptions
Use this to align rules with the senior-level structure (P0/P1/P2, scope, exceptions/tradeoffs).
frontend ruleP1stack specificStack: react
reactclassnamescorrectnessclean-code
Guard conditional class strings against falsy leakage
A `cond && styles.x` inside a template renders 'false' when cond is falsy; use a ternary returning '' so no stray token lands in className.
PR: frontpage-web · org-mining-hist-2026-06Created: Jun 18, 2026
Bad example
Old codetypescript
| 1 | <div className={`${isEmpty && styles.sticky} ${styles.container}`} /> // 'false container' when not empty |
Explanation (EN)
Objašnjenje (HR)
Good example
New codetypescript
| 1 | <div className={`${isEmpty ? styles.sticky : ''} ${styles.container}`} /> |
Explanation (EN)
Objašnjenje (HR)