rsocket-browser/dist/rsocket/options.js

Browser-first RSocket client over WebSocket or WebTransport with reconnect and Resume.

//#region src/rsocket/options.ts
/** Resolves both browser constructor forms into canonical client options. */
function browserClientOptions(urlOrOptions, fallback) {
	const { url, options } = resolveConstructor(urlOrOptions, fallback);
	const { setup: browserSetup, webTransport, reconnect = true, ...rest } = options;
	const { transport, protocols, ...setup } = browserSetup ?? {};
	if (isWebTransportEndpoint(url)) {
		if (protocols !== void 0 || transport !== void 0) throw new TypeError("WebTransport URLs use options.webTransport; setup.protocols and setup.transport are WebSocket-only");
		return {
			...rest,
			reconnect,
			transport: {
				type: "webtransport",
				url,
				...webTransport
			},
			...browserSetup === void 0 ? {} : { setup }
		};
	}
	if (webTransport !== void 0) throw new TypeError("options.webTransport requires an https: WebTransport URL");
	return {
		...rest,
		reconnect,
		transport: {
			type: "websocket",
			url,
			...protocols === void 0 ? {} : { protocols },
			...transport === void 0 ? {} : { factory: transport }
		},
		...browserSetup === void 0 ? {} : { setup }
	};
}
/** Selects WebTransport only for an unambiguous HTTPS endpoint. */
function isWebTransportEndpoint(input) {
	try {
		const href = isUrl(input) ? input.href : String(input);
		return new URL(href).protocol === "https:";
	} catch {
		return false;
	}
}
/** Separates the URL from either supported constructor form. */
function resolveConstructor(input, fallback) {
	if (typeof input === "string" || isUrl(input)) return {
		url: input,
		options: fallback
	};
	const { url, ...options } = input;
	return {
		url,
		options
	};
}
/** Recognizes URL objects created by the current window or another browser realm. */
function isUrl(value) {
	return typeof value === "object" && value !== null && Object.prototype.toString.call(value) === "[object URL]";
}
//#endregion
export { browserClientOptions };

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