@civ-clone/core-yield/NegativeYield.d.ts

A `Yield` is a key element in Civilization and can refer to anything from the `Attack` value of a `Unit` to, the `Food` returned for a `Tile` or the `Unhappiness` produced by a `City`.

import Yield from './Yield';
export declare class NegativeYield extends Yield {
  add(value: Yield | number, provider?: string): void;
  set(value: Yield | number, provider?: string): void;
  subtract(value: Yield | number, provider?: string): void;
}
export default NegativeYield;
export declare const makeNegative: (Target: typeof Yield) => void;