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Observer Pattern Interfaces
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interface Observer { | |
// Receive update from subject. | |
update(subject: Subject | CustomEvent): void; | |
} | |
interface Subject { | |
// Attach an observer to the subject. | |
attach(observer: Observer): void; | |
// Detach an observer from the subject. | |
detach(observer: Observer): void; | |
// Notify all observers about an event. | |
notify(event: CustomEvent | undefined): void; | |
} |
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