export class WebSocketClosedError extends Error {
	override name = "WebSocketClosedError";
	code: number;
	reason: string;

	constructor(message: string, event?: CloseEvent) {
		super(message);
		this.code = event?.code ?? 1005;
		this.reason = event?.reason ?? "";
	}
}

export class AbortedError extends Error {
	override name = "AbortedError";
}

export class UnexpectedMessageError extends Error {
	override name = "UnexpectedMessageError";
	unexpectedMessage: any;

	constructor(unexpectedMessage: any) {
		super('"expect" command received an unexpected message');
		this.unexpectedMessage = unexpectedMessage;
	}
}

export const noError: unique symbol = Symbol("noError");