/**
 * Error indicating not support for something.
 */
export class UnsupportedError extends Error
{
	constructor(message: string)
	{
		super(message);

		this.name = 'UnsupportedError';

		if (Error.hasOwnProperty('captureStackTrace')) // Just in V8.
		{
			// @ts-ignore
			Error.captureStackTrace(this, UnsupportedError);
		}
		else
		{
			this.stack = (new Error(message)).stack;
		}
	}
}

/**
 * Error produced when calling a method in an invalid state.
 */
export class InvalidStateError extends Error
{
	constructor(message: string)
	{
		super(message);

		this.name = 'InvalidStateError';

		if (Error.hasOwnProperty('captureStackTrace')) // Just in V8.
		{
			// @ts-ignore
			Error.captureStackTrace(this, InvalidStateError);
		}
		else
		{
			this.stack = (new Error(message)).stack;
		}
	}
}