declare namespace myBuffer { class myBuffer { length: number; static alloc(size: number): myBuffer; static from(str: string, fmt: string): myBuffer; toString(format: string, start?: number, end?: number): string; } } export = myBuffer; 改成这样后,index.vue 中这样引用 import { myBuffer } from "../../comm/myBuffer"; let buff = myBuffer.alloc(4); console.log(buff); 报错了: [Vue warn]: Error in onLoad hook: "TypeError: Cannot read property 'alloc' of undefined"
时间: 2024-03-14 22:42:39 浏览: 16
这个错误通常是因为在导入 `myBuffer` 时没有正确导出模块。可以尝试以下两种解决方法:
1. 将 `.d.ts` 文件中的 `export = myBuffer;` 改为 `export namespace myBuffer { }`,并将 `class myBuffer` 放在命名空间内部:
```
export namespace myBuffer {
class myBuffer {
// ...
}
}
```
然后在导入时,需要使用命名空间来访问 `myBuffer` 类:
```
import { myBuffer } from "../../comm/myBuffer";
let buff = new myBuffer.myBuffer();
console.log(buff);
```
2. 将 `.d.ts` 文件中的 `export = myBuffer;` 改为 `export default myBuffer;`,然后在导入时直接使用默认导出:
```
import myBuffer from "../../comm/myBuffer";
let buff = new myBuffer();
console.log(buff);
```
希望这些解决方法可以帮助您解决问题。
相关问题
cannot declare member function'static book HttpClient::HttpClientInit()'to have static linkage
这个错误是因为您在类的定义中声明了一个静态成员函数,但是在声明时没有使用 `static` 关键字。
您需要在类定义中声明静态成员函数时使用 `static` 关键字。例如:
```cpp
class HttpClient {
public:
static HttpClientInit(); // 声明静态成员函数时需要使用 static 关键字
};
```
如果您已经使用了 `static` 关键字,那么可能是因为您在另一个地方重复定义了该函数。请确保只有一个定义。
如果问题仍然存在,请提供更多代码以便我更好地帮助您解决问题。
error: in-class initialization of static data member
If you get an error message "in-class initialization of static data member" while trying to initialize a static data member inside a class definition, it means that you are using a version of C++ that does not support this feature.
In-class initialization of static data members was introduced in C++11, so if you are using an older version of C++, you will need to initialize your static data member outside the class definition.
Here's an example of how to initialize a static data member outside the class definition:
```c++
class MyClass {
public:
static int myStaticData; // declaration
};
int MyClass::myStaticData = 42; // initialization outside the class definition
```
In this example, we declare the static data member `myStaticData` inside the class definition, and then initialize it outside the class definition using the scope resolution operator `::`.
Note that if you are using a modern version of C++ that supports in-class initialization of static data members, you can still choose to initialize your static data member outside the class definition if you prefer.