React native 如何在react native中访问导出的枚举？

所以我像这样声明了我的枚举：

export const DOCUMENT_TYPE = { 
    Project: 'Project', 
    Document: 'Document'
}

import DOCUMENT_TYPE from '../constants/enums'

const CreateDocumentScreen = props => {

const type = props.type == DOCUMENT_TYPE.Project ? "Project" : "Document";

    return (
        <View>
            <Text>Create {type}</Text>
            <TextInput/>
        </View>
    )
}

const type = props.type == DOCUMENT_TYPE.Project ? "Project" : "Document";

现在我正试图在另一个文档中访问它们：

export const DOCUMENT_TYPE = { 
    Project: 'Project', 
    Document: 'Document'
}

import DOCUMENT_TYPE from '../constants/enums'

const CreateDocumentScreen = props => {

const type = props.type == DOCUMENT_TYPE.Project ? "Project" : "Document";

    return (
        <View>
            <Text>Create {type}</Text>
            <TextInput/>
        </View>
    )
}

const type = props.type == DOCUMENT_TYPE.Project ? "Project" : "Document";

正在抛出“TypeError:undefined不是对象”

我猜：

import { DOCUMENT_TYPE } from '../constants/enums'

而不是

import DOCUMENT_TYPE from '../constants/enums'