// see https://stackoverflow.com/a/41102306
const CAN_SET_PROTOTYPE = 'setPrototypeOf' in Object

/**
 * Indicates that the pair has insufficient reserves for a desired output amount. I.e. the amount of output cannot be
 * obtained by sending any amount of input.
 */
export class InsufficientReservesError extends Error {
  public readonly isInsufficientReservesError = true

  public constructor() {
    super()
    this.name = this.constructor.name
    if (CAN_SET_PROTOTYPE) Object.setPrototypeOf(this, new.target.prototype)
  }
}

/**
 * Indicates that the input amount is too small to produce any amount of output. I.e. the amount of input sent is less
 * than the price of a single unit of output after fees.
 */
export class InsufficientInputAmountError extends Error {
  public readonly isInsufficientInputAmountError = true

  public constructor() {
    super()
    this.name = this.constructor.name
    if (CAN_SET_PROTOTYPE) Object.setPrototypeOf(this, new.target.prototype)
  }
}