Javascript Typescript装饰程序被调用两次

因为我很确定这是一个bug，但我也想在这里检查一下，以防有人有其他的见解

这就是正在发生的事情

它将记录以下内容：

Error in /turbo_modules/@fireflysemantics/validator@3.0.10/bundles/fireflysemantics-validator.umd.js (194:21)
The ValidationContainer
already contains context with signature IsValueIn_Person_name.

但是如果我们把

@IsValueIn（['PETER'，'JAMES']）注释掉

：

没有例外

当运行时看到并实例化一个decorator时，将调用以下函数（我添加了日志语句，表明decorator被调用了两次）：

以下是执行的日志记录语句：

ValidationContainer.ts:69 The target signature is:  IsDefined_Person_name
ValidationContainer.ts:68 The property key is:  Person_name
ValidationContainer.ts:69 The target signature is:  IsAlpha_Person_name
ValidationContainer.ts:68 The property key is:  Person_name
ValidationContainer.ts:69 The target signature is:  IsValueIn_Person_name
ValidationContainer.ts:68 The property key is:  Person_name
ValidationContainer.ts:69 The target signature is:  IsValueIn_Person_name

可以看出，

IsValueIn\u Person\u name

创建了两次，这是装饰器实例化两次的结果，这会产生异常

---

想法？

基于日志两次调用decorator的假设是错误的

在电流源中：

export function IsValueIn(target: any[], validationOptions?: ValidationOptions) {

  const validationParameters:any[] = [];
  validationParameters.push(target);

  return function(object: any, propertyName: string) {
    const vc: ValidationContext = new ValidationContext(
      object,
      object.constructor,
      IsValueIn.name,
      propertyName,
      validateValue,
      null,
      true,
      errorMessage,
      validationOptions
    );
    ValidationContainer.addValidationContext(vc);
    ValidationContainer.addValidationContext(vc);
  };
}

ValidationContainer.addValidationContext（vc）

被调用两次并生成这些双日志

---

把线去掉；）

也许这就是来源：-呼叫两次-没有tsissue@Estradiaz该死，你在我之前就发现了：D

  /**
   * @param target Add a ValidationContext instance.
   * @throws Error if attempting to add a ValidationContext with a signature that duplicates that of an instance already contained.
   * 
   * If an exception thrown it indicates that a duplicate class definition exist
   * in the runtime.  In other words the same class definition is loaded more
   * than once because it exists in multiple files.
   * 
   */
  public static addValidationContext(target: ValidationContext): void {

    const key: string = getPropertyKey(
      target.target.name,
      target.propertyName
    );

    console.log("The property key is: ", key)
    console.log("The target signature is: ", target.getSignature())

ValidationContainer.ts:69 The target signature is:  IsDefined_Person_name
ValidationContainer.ts:68 The property key is:  Person_name
ValidationContainer.ts:69 The target signature is:  IsAlpha_Person_name
ValidationContainer.ts:68 The property key is:  Person_name
ValidationContainer.ts:69 The target signature is:  IsValueIn_Person_name
ValidationContainer.ts:68 The property key is:  Person_name
ValidationContainer.ts:69 The target signature is:  IsValueIn_Person_name

export function IsValueIn(target: any[], validationOptions?: ValidationOptions) {

  const validationParameters:any[] = [];
  validationParameters.push(target);

  return function(object: any, propertyName: string) {
    const vc: ValidationContext = new ValidationContext(
      object,
      object.constructor,
      IsValueIn.name,
      propertyName,
      validateValue,
      null,
      true,
      errorMessage,
      validationOptions
    );
    ValidationContainer.addValidationContext(vc);
    ValidationContainer.addValidationContext(vc);
  };
}