oguzhankoral
25 lines
890 B
TypeScript
25 lines
890 B
TypeScript
import { createNanoEvents, Emitter } from 'nanoevents'
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/**
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* A simple (typed) event emitter base class that host applications can use to send messages (and data) to the web ui,
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* e.g. via `browser.executeScriptAsync("myBindings.on('eventName', serializedData)")`.
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*/
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export class BaseBridge {
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public emitter: Emitter
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constructor() {
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this.emitter = createNanoEvents()
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}
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// NOTE: these do not need to be typed extra in here, as they will be properly typed on the specific binding's interface.
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on(event: string | number, callback: (...args: unknown[]) => void) {
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return this.emitter.on(event, callback)
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}
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// NOTE: this could be private - as it should be only used by the host application.
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emit(eventName: string, payload: string) {
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const parsedPayload = payload ? (JSON.parse(payload) as unknown) : null
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this.emitter.emit(eventName, parsedPayload)
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}
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}
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