Directives & Pipes

Priority: P2 (MEDIUM)

Principles

• Composition: Use hostDirectives to compose behaviors onto components/directives without inheritance.
• Pure Pipes: Pipes must be pure: true (default). They cache results based on input reference.
• Directive Logic: Encapsulate reusable DOM manipulation or behavioral logic in Directives (e.g., appFocusTrap, appTooltip).

Guidelines

• Signal Inputs: Directives also support signal inputs.
• Standalone: All Pipes and Directives must be standalone.

References

• Composition