reactjs - 奇怪的 React 编译器行为
问题描述
我在ReactJS. 将reactstrap模块从bootstrap4.
我有reactstrap标签：
import React, {Component} from 'react';
import {
Button,
Col,
Container,
Form,
Input,
InputGroup, InputGroupAddon, InputGroupText,
Label,
Nav,
NavItem,
NavLink,
Row,
TabContent,
TabPane
} from "reactstrap";
import {Link} from "react-router-dom";
import classNames from 'classnames';
import Logo from "../../components/common/Logo";
import '../../style/page/auth/style.css';
import '../../style/page/auth/media.css';
import '../../style/page/auth/custom.css';
class LoginPage extends Component {
constructor(props) {
super(props);
this.state = {
activeTab: 'signInTab'
};
this.toggle = this.toggle.bind(this);
this.openTermsTab = this.openTermsTab.bind(this);
}
componentDidMount() {
document.title = "Авторизация";
}
toggle(tab) {
if (this.state.activeTab !== tab) {
this.setState({
activeTab: tab
});
}
}
openTermsTab(e) {
e.preventDefault();
this.toggle('termsTab');
}
render() {
return (
<main className="align-middle">
<Container>
<Row className="h-100 justify-content-center">
<Col xs={"12"} sm={"12"} md={"8"} lg={"6"} xl={"6"}>
<div className="entry-box-wrapper">
<div className="entry-box modal-content">
<div className="modal-body">
<Nav pills justified>
<NavItem>
<NavLink
className={classNames({ active: this.state.activeTab === 'signInTab' })}
onClick={() => { this.toggle('signInTab'); }}>
Авторизация
</NavLink>
</NavItem>
<NavItem>
<NavLink
className={classNames({ active: this.state.activeTab === 'signUpTab' })}
onClick={() => {this.toggle('signUpTab')}}>
Регистрация
</NavLink>
</NavItem>
<NavItem>
<NavLink
className={classNames({ active: this.state.activeTab === 'termsTab' })}
onClick={this.openTermsTab}>
Правила сервиса
</NavLink>
</NavItem>
</Nav>
<Logo className={"d-block mx-auto mt-4"} />
<TabContent activeTab={this.state.activeTab}>
<TabPane tabId={"signInTab"}>
<hr/>
<Form id="signInForm" >
<div className="form-group input-group">
<InputGroup>
<InputGroupAddon addonType="prepend">
<InputGroupText>
<i className="fas fa-envelope"/>
</InputGroupText>
</InputGroupAddon>
<Input type="email" name="email" placeholder="Email" />
</InputGroup>
</div>
<div className="form-group input-group">
<InputGroup>
<InputGroupAddon addonType="prepend">
<InputGroupText>
<i className="fas fa-unlock-alt"/>
</InputGroupText>
</InputGroupAddon>
<Input type="password" name="password" placeholder="Пароль" />
</InputGroup>
</div>
<Row>
<Col widths={["6"]}>
<div className="custom-control custom-checkbox">
<Input
type={"checkbox"}
name={"rememberMe"}
id={"singInTabRememberMe"}
className={"custom-control-input"}/>
<Label
for={"singInTabRememberMe"}
className={"custom-control-label"}>
запомнить меня
</Label>
</div>
</Col>
<Col widths={["6"]} className="text-center pl-0 pr-0">
<Link to="/admin/forgot" className="brand-link">
Не помню пароль
</Link>
</Col>
</Row>
<Button color="" className={"float-right brand-nav-btn left-filling"}>
<i><img src={process.env.PUBLIC_URL + '/img/login2.png'} alt=""/></i>
<span>
Вход
</span>
</Button>
</Form>
</TabPane>
<TabPane tabId={"signUpTab"}>
<hr/>
<Form>
<div className="form-group input-group">
<InputGroup>
<InputGroupAddon addonType="prepend">
<InputGroupText>
<i className="fas fa-envelope"/>
</InputGroupText>
</InputGroupAddon>
<Input type="email" placeholder="Email" />
</InputGroup>
</div>
<div className="form-group input-group">
<InputGroup>
<InputGroupAddon addonType="prepend">
<InputGroupText>
<i className="fas fa-unlock-alt"/>
</InputGroupText>
</InputGroupAddon>
<Input type="password" placeholder="Пароль" />
</InputGroup>
</div>
<div className="form-group input-group">
<InputGroup>
<InputGroupAddon addonType="prepend">
<InputGroupText>
<i className="fas fa-unlock-alt"/>
</InputGroupText>
</InputGroupAddon>
<Input type="password" placeholder="Повторите пароль" />
</InputGroup>
</div>
<div className="custom-control custom-checkbox ">
<Input
type={"checkbox"}
name={"example1"}
id={"chBxTermsArgee"}
className={"custom-control-input"}/>
<Label
for={"chBxTermsArgee"}
className={"custom-control-label"}>
согласен с
<a href={"#"} className="brand-link" id="serviceTermsLink"
onClick={this.openTermsTab}>
правилами сервиса
</a>
</Label>
</div>
<Button color="" className={"float-right brand-nav-btn left-filling"}>
<i><img src={process.env.PUBLIC_URL + '/img/login2.png'} alt=""/></i>
<span>
Отправить
</span>
</Button>
</Form>
</TabPane>
<TabPane id="termsTab" tabId={"termsTab"}>
<hr/>
<div className="service-terms">
<h3>Правила предоставления услуги</h3>
<p>
Lorem ipsum dolor sit amet consectetur adipisicing elit.
Ipsa, cumque
necessitatibus impedit delectus ratione harum nisi nemo
minus eaque,
exercitationem consequuntur. Repellat tempore molestias
dicta. Recusandae
quam rem ducimus temporibus!
Doloribus quibusdam ullam atque possimus sequi libero
inventore natus amet
facilis, minima dolore molestias accusantium nam omnis,
delectus totam fuga
quae nemo asperiores laboriosam veritatis! Ipsam aperiam
ipsa nulla vitae?
Temporibus nulla rem aspernatur eum quidem minima
voluptatum corporis libero
explicabo. Impedit distinctio deleniti labore
exercitationem quae
repudiandae consequatur? Ullam eveniet quo
exercitationem! Sint ab, nihil
placeat ea omnis libero!
Lorem ipsum, dolor sit amet consectetur adipisicing
elit. Cum, voluptatum
perspiciatis molestias reiciendis blanditiis pariatur in
sunt velit? Labore
assumenda repellendus sint molestiae debitis esse itaque
totam distinctio
perferendis reiciendis?
</p>
</div>
</TabPane>
</TabContent>
</div>
</div>
</div>
</Col>
</Row>
</Container>
</main>
);
}
}
export default LoginPage;
更新！
所以它有效。我想将选项卡的内容传输到单独的组件中，如下所示：
<TabContent activeTab={this.state.activeTab}>
<SignInTab/>
<SignUpTab/>
<TermsTab/>
</TabContent>
在编译过程中发生了错误：
./node_modules/reactstrap/src/Alert.js
SyntaxError: E:\IDEA\application\node_modules\reactstrap\src\Alert.js: Unexpected token (72:4)
70 |
71 | return (
> 72 | <Fade {...attributes} {...alertTransition} tag={Tag} className={classes} in={isOpen} role="alert" innerRef={innerRef}>
| ^
73 | {toggle ?
74 | <button type="button" className={closeClasses} aria-label={closeAriaLabel} onClick={toggle}>
75 | <span aria-hidden="true">×</span>
为什么？
package.json
{
"name": "front-end-react-v1",
"version": "0.1.0",
"private": true,
"dependencies": {
"ajv": "^6.6.2",
"ajv-keywords": "^3.2.0",
"classnames": "^2.2.3",
"react": "^16.7.0",
"react-dom": "^16.7.0",
"react-native": "^0.57.8",
"react-router": "^4.3.1",
"react-router-dom": "^4.3.1",
"react-router-native": "^4.3.0",
"react-scripts": "^2.1.1",
"reactstrap": "^6.5.0"
},
"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": {
"babel-core": "^6.26.3",
"babel-loader": "^8.0.4",
"babel-preset-env": "^1.7.0",
"babel-preset-react": "^6.24.1"
}
}
解决方案
发生错误./node_modules/reactstrap/src/Alert.js意味着组件是从而reactstrap/src/...不是reactstrap（后者指向reactstrap/dist/...）导入的。
导入 from 的问题reactstrap/src在于它包含需要转译的代码。它不应该在没有充分理由的情况下被导入，因为项目通常配置为不从 转换模块node_modules，这会导致开销和潜在问题。在由 生成的应用程序中create-react-app，如果不修改 Webpack 配置，则无法更改此设置。
reactstrap/src/...IDE 自动导入通常会添加不正确的导入。
万一有
import Alert from 'reactstrap/src/Alert.js';
进口，应该改成
import { Alert } from 'reactstrap';
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