Event Emitter with Type-safe Events

Hard

Create a typed EventEmitter for Hack Frontend application. Events should be strictly typed with correct payload types.

Requirements:

TypeScript•UTF-8

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Hard

Create a typed EventEmitter for Hack Frontend application. Events should be strictly typed with correct payload types.

Requirements:

Input 1: emitter.on("courseCompleted", (data) => ...)

Output 1: data: { courseId: string; userId: number }

Output

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