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refactor: event manager (#25565)

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This commit is contained in:
Jason Rasmussen
2026-01-29 08:52:18 -05:00
committed by GitHub
parent 8db61d341f
commit 10b53b525d
21 changed files with 84 additions and 68 deletions
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34
web/src/lib/utils/base-event-manager.svelte.ts
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@@ -1,8 +1,9 @@
type EventMap = Record<string, unknown[]>;
type EventsBase = Record<string, unknown[]>;
type PromiseLike<T> = Promise<T> | T;
export type EventCallback<E extends EventMap, T extends keyof E> = (...args: E[T]) => PromiseLike<unknown>;
export type EventItem<E extends EventMap, T extends keyof E = keyof E> = {
export type EventMap<E extends EventsBase> = { [K in keyof E]?: EventCallback<E, K> };
export type EventCallback<E extends EventsBase, T extends keyof E> = (...args: E[T]) => PromiseLike<unknown>;
export type EventItem<E extends EventsBase, T extends keyof E = keyof E> = {
id: number;
event: T;
callback: EventCallback<E, T>;
@@ -13,10 +14,22 @@ const nextId = () => count++;
const noop = () => {};
export class BaseEventManager<Events extends EventMap> {
export class BaseEventManager<Events extends EventsBase> {
#callbacks: EventItem<Events>[] = $state([]);
on<T extends keyof Events>(event: T, callback?: EventCallback<Events, T>) {
on(subscriptions: EventMap<Events>): () => void {
const cleanups = Object.entries(subscriptions).map(([event, callback]) =>
this.#onEvent(event as keyof Events, callback as EventCallback<Events, keyof Events>),
);
return () => {
for (const cleanup of cleanups) {
cleanup();
}
};
}
#onEvent<T extends keyof Events>(event: T, callback?: EventCallback<Events, T>) {
if (!callback) {
return noop;
}
@@ -30,17 +43,6 @@ export class BaseEventManager<Events extends EventMap> {
};
}
onMany(subscriptions: { [T in keyof Events]?: EventCallback<Events, T> }) {
const cleanups = Object.entries(subscriptions).map(([event, callback]) =>
this.on(event as keyof Events, callback as EventCallback<Events, keyof Events>),
);
return () => {
for (const cleanup of cleanups) {
cleanup();
}
};
}
emit<T extends keyof Events>(event: T, ...params: Events[T]) {
const listeners = this.getListeners(event);
for (const listener of listeners) {