Question

每次尝试使用“ react-bootstrap”中的某些组件时，都会出现一些奇怪的错误。这是导入“ HelpBlock”组件的一些小示例。

import PropTypes from 'prop-types';
import React from 'react';
import HelpBlock from 'react-bootstrap';

class RegisterFormDetails extends React.Component {

...
              <HelpBlock>{validationErrorMessage}</HelpBlock>
            }
          </div>
        </div>
    );
      };
export default RegisterFormDetails;

但随后出现此错误

Attempted import error: 'react-bootstrap' does not contain a default export (imported as 'HelpBlock').

我的package.json

    {
  "name": "my-app",
  "version": "0.1.0",
  "private": true,
  "dependencies": {},
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": [
    ">0.2%",
    "not dead",
    "not ie <= 11",
    "not op_mini all"
  ],
  "devDependencies": {
    "bootstrap": "^4.3.1",
    "lodash": "^4.17.11",
    "prop-types": "^15.7.2",
    "react": "^16.8.3",
    "react-bootstrap": "^0.32.1",
    "react-bootstrap-sweetalert": "^4.4.1",
    "react-dom": "^16.8.3",
    "react-scripts": "^2.1.5",
    "react-select": "^2.4.1"
  }
}

有人可以帮助我吗？我已经重新检查了node_modules中的react-bootstrap文件夹，其中包含我要导入的组件

Answer 1

您可以导入单个组件，例如：

import HelpBlock from 'react-bootstrap/HelpBlock ';

第一个是直接导入组件，以上是默认导入。默认导入与默认导出一起导出。...只能有一个默认导出。由于'react-bootstrap'不包含默认导出，因此您必须直接导入。

或import { HelpBlock } from 'react-bootstrap';

此处，将仅导入HelpBlock。希望对您有所帮助。

此article将帮助您了解es6模块。

从react-bootstrap导入任何组件都会引发错误

1 个答案: