better-auth/dist/client/broadcast-channel.mjs

The most comprehensive authentication framework for TypeScript.

//#region src/client/broadcast-channel.ts
const kBroadcastChannel = Symbol.for("better-auth:broadcast-channel");
const now = () => Math.floor(Date.now() / 1e3);
var WindowBroadcastChannel = class {
	listeners = /* @__PURE__ */ new Set();
	name;
	constructor(name = "better-auth.message") {
		this.name = name;
	}
	subscribe(listener) {
		this.listeners.add(listener);
		return () => {
			this.listeners.delete(listener);
		};
	}
	post(message) {
		if (typeof window === "undefined") return;
		try {
			localStorage.setItem(this.name, JSON.stringify({
				...message,
				timestamp: now()
			}));
		} catch {}
	}
	setup() {
		if (typeof window === "undefined" || typeof window.addEventListener === "undefined") return () => {};
		const handler = (event) => {
			if (event.key !== this.name) return;
			const message = JSON.parse(event.newValue ?? "{}");
			if (message?.event !== "session" || !message?.data) return;
			this.listeners.forEach((listener) => listener(message));
		};
		window.addEventListener("storage", handler);
		return () => {
			window.removeEventListener("storage", handler);
		};
	}
};
function getGlobalBroadcastChannel(name = "better-auth.message") {
	if (!globalThis[kBroadcastChannel]) globalThis[kBroadcastChannel] = new WindowBroadcastChannel(name);
	return globalThis[kBroadcastChannel];
}

//#endregion
export { getGlobalBroadcastChannel, kBroadcastChannel };
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