When implementing permission checks, understand the hierarchical nature of permissions and avoid redundant checks. Higher-level permissions typically include lower-level ones. Ensure your authorization logic accounts for permission relationships to maintain security while keeping code efficient.

Example:

// Inefficient - checks each permission separately
const hasAccess = data.user.permissions.triage || 
                 data.user.permissions.write || 
                 data.user.permissions.admin;

// Better - understands permission hierarchy
const hasAccess = ['triage', 'write', 'admin'].some(p => data.user.permissions[p]);

// Most efficient - if you know the hierarchy (write and admin include triage)
const hasAccess = data.user.permissions.triage || 
                 data.user.permissions.write || 
                 data.user.permissions.admin;

The most appropriate implementation depends on the system’s permission model and whether permission hierarchies are guaranteed to remain consistent over time.

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