48 lines
1.3 KiB
TypeScript
48 lines
1.3 KiB
TypeScript
import { syscall } from "../syscall.ts";
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/**
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* Exposes the SilverBullet event bus.
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* @module
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*/
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/**
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* Triggers an event on the SilverBullet event bus.
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* This can be used to implement an RPC-style system too, because event handlers can return values,
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* which are then accumulated in an array and returned to the caller.
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* @param eventName the name of the event to trigger
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* @param data payload to send with the event
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* @param timeout optional timeout in milliseconds to wait for a response
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* @returns an array of responses from the event handlers (if any)
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*/
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export function dispatchEvent(
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eventName: string,
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data: any,
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timeout?: number,
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): Promise<any[]> {
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return new Promise((resolve, reject) => {
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let timeouter: any = -1;
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if (timeout) {
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timeouter = setTimeout(() => {
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console.log("Timeout!");
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reject("timeout");
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}, timeout);
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}
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syscall("event.dispatch", eventName, data)
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.then((r: any) => {
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if (timeouter !== -1) {
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clearTimeout(timeouter);
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}
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resolve(r);
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})
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.catch(reject);
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});
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}
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/**
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* List all events currently registered (listened to) on the SilverBullet event bus.
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* @returns an array of event names
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*/
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export function listEvents(): Promise<string[]> {
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return syscall("event.list");
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}
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