node.js - next.js + expo : You likely forgot to export your component from the file it's defined in, 或者您可能混淆了默认导入和命名导入

Question

当我尝试运行 yarn ios 时，我得到:

Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

Check the render method of `MyApp`.

但是我的 App.tsx 有:

class MyApp extends App {


  render() {
    const { Component, pageProps } = this.props;
    return (
      <ThemeProvider theme={theme}>
        <ScrollView>
          <Component {...pageProps} />
        </ScrollView>
        <FooterBar />
      </ThemeProvider>
    )
  }
}

export default MyApp

所以我不确定它在提示什么？

Answer 1

尝试直接从其来源导入组件，然后插入 pageProp。所以在例子中:

import {Component} from '../pathOfComponent';