Question

我正在使用react and react-dom 16.5.0。

我将react-dropzone从3.13.0升级到了5.1.0。

我的页面无法呈现，而是在控制台中获取它：

Warning: React.createElement: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: object.

Check the render method of `Upload`.    

Uncaught Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: object.

    Check the render method of `Upload`.
        at invariant (react-dom.development.js:55)
        at createFiberFromElement (react-dom.development.js:9823)
        at reconcileSingleElement (react-dom.development.js:12777)
        at reconcileChildFibers (react-dom.development.js:12834)
        at reconcileChildren (react-dom.development.js:13238)
        at finishClassComponent (react-dom.development.js:13412)
        at updateClassComponent (react-dom.development.js:13356)
        at beginWork (react-dom.development.js:13945)
        at performUnitOfWork (react-dom.development.js:16249)
        at workLoop (react-dom.development.js:16287)

上面提到的Upload文件包含我的元素。

进一步的实验表明，直到4.1.3的版本都可以使用，但是4.2.0及更高版本失败了。

react-dropzone 4.2.0唯一列出的功能是“添加es2015模块构建”。没有列出重大更改。

react-dropzone从4.1.3升级到4.2.0失败

0 个答案: