Building Dynamic RBAC in React 19: From Permission Strings to Component-Level Access Control
String-based permission checks scattered across your React codebase are a maintenance nightmare. I know because I shipped CitizenApp with that anti-pattern, and it nearly bit me when we added our fifth AI feature.
The problem? Permissions were hardcoded in components. When the marketing team wanted to trial a feature with select customers, I had to grep through half the codebase, find every if (user.role === 'admin') check, and create some Frankenstein conditional. Worse, there was no single source of truth for what "feature_x_access" actually meant across our tenant hierarchy.
This post shows you how to build a type-safe, composable RBAC layer that lives outside your components. Your UI asks "can I do X?" and the permission engine answers. Clean separation. Testable. Scales.
The Core Philosophy: Permissions Are Data, Not Logic
