Class UnionRule

src/common/rule.ts:184–195

}

export class UnionRule<T> implements Rule {
  predefined: any;
  check: CheckFuction;
  minimalVersion?: string;
  constructor(predefined: T, options: readonly T[], minimalVersion?: string) {
    this.predefined = predefined;
    this.minimalVersion = minimalVersion;
    this.check = function (value: T) {
      return options.includes(value);
    };
  }
}

/**
 * FlexibleUnionRule 允许值为预定义选项之一，或任意字符串（用于自定义翻译器等扩展场景）