const IS_RECORD_SYMBOL = "@@__IMMUTABLE_RECORD__@@";
const IS_COLLECTION_SYMBOL = "@@__IMMUTABLE_ITERABLE__@@";
function isImmutable(v) {
	return v && (v[IS_COLLECTION_SYMBOL] || v[IS_RECORD_SYMBOL]);
}
const OBJECT_PROTO = Object.getPrototypeOf({});
function getUnserializableMessage(err) {
	if (err instanceof Error) {
		return `<unserializable>: ${err.message}`;
	}
	if (typeof err === "string") {
		return `<unserializable>: ${err}`;
	}
	return "<unserializable>";
}
// https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm
function serializeValue(val, seen = new WeakMap()) {
	if (!val || typeof val === "string") {
		return val;
	}
	if (val instanceof Error && "toJSON" in val && typeof val.toJSON === "function") {
		const jsonValue = val.toJSON();
		if (jsonValue && jsonValue !== val && typeof jsonValue === "object") {
			if (typeof val.message === "string") {
				safe(() => jsonValue.message ?? (jsonValue.message = normalizeErrorMessage(val.message)));
			}
			if (typeof val.stack === "string") {
				safe(() => jsonValue.stack ?? (jsonValue.stack = val.stack));
			}
			if (typeof val.name === "string") {
				safe(() => jsonValue.name ?? (jsonValue.name = val.name));
			}
			if (val.cause != null) {
				safe(() => jsonValue.cause ?? (jsonValue.cause = serializeValue(val.cause, seen)));
			}
		}
		return serializeValue(jsonValue, seen);
	}
	if (typeof val === "function") {
		return `Function<${val.name || "anonymous"}>`;
	}
	if (typeof val === "symbol") {
		return val.toString();
	}
	if (typeof val !== "object") {
		return val;
	}
	if (typeof Buffer !== "undefined" && val instanceof Buffer) {
		return `<Buffer(${val.length}) ...>`;
	}
	if (typeof Uint8Array !== "undefined" && val instanceof Uint8Array) {
		return `<Uint8Array(${val.length}) ...>`;
	}
	// cannot serialize immutables as immutables
	if (isImmutable(val)) {
		return serializeValue(val.toJSON(), seen);
	}
	if (val instanceof Promise || val.constructor && val.constructor.prototype === "AsyncFunction") {
		return "Promise";
	}
	if (typeof Element !== "undefined" && val instanceof Element) {
		return val.tagName;
	}
	if (typeof val.toJSON === "function") {
		return serializeValue(val.toJSON(), seen);
	}
	if (seen.has(val)) {
		return seen.get(val);
	}
	if (Array.isArray(val)) {
		// eslint-disable-next-line unicorn/no-new-array -- we need to keep sparse arrays ([1,,3])
		const clone = new Array(val.length);
		seen.set(val, clone);
		val.forEach((e, i) => {
			try {
				clone[i] = serializeValue(e, seen);
			} catch (err) {
				clone[i] = getUnserializableMessage(err);
			}
		});
		return clone;
	} else {
		// Objects with `Error` constructors appear to cause problems during worker communication
		// using `MessagePort`, so the serialized error object is being recreated as plain object.
		const clone = Object.create(null);
		seen.set(val, clone);
		let obj = val;
		while (obj && obj !== OBJECT_PROTO) {
			Object.getOwnPropertyNames(obj).forEach((key) => {
				if (key in clone) {
					return;
				}
				try {
					clone[key] = serializeValue(val[key], seen);
				} catch (err) {
					// delete in case it has a setter from prototype that might throw
					delete clone[key];
					clone[key] = getUnserializableMessage(err);
				}
			});
			obj = Object.getPrototypeOf(obj);
		}
		if (val instanceof Error) {
			safe(() => val.message = normalizeErrorMessage(val.message));
		}
		return clone;
	}
}
function safe(fn) {
	try {
		return fn();
	} catch {}
}
function normalizeErrorMessage(message) {
	return message.replace(/__(vite_ssr_import|vi_import)_\d+__\./g, "");
}

export { serializeValue };
