我收到错误:
Unexpected token (14:21)
12 | class MeetingMap extends React.Component {
13 |
> 14 | static propTypes = {
| ^
15 | accountId: PropTypes.string.isRequired
16 | };
17 |
这是代码:
static propTypes = {
account: PropTypes.string.isRequired
};
static defaultProps = {
account: ''
};
我错过了什么?谢谢。
答案 0 :(得分:2)
正如您在与您的问题相关的this GitHub issue中所看到的,类属性是ES7的第0阶段提案。如果您想使用此功能,则需要Babel stage 0 preset。否则,您需要使用添加propTypes的默认方法,如React docs中所示。
import React, { Component, PropTypes } from 'react';
class Counter extends Component {
constructor(props) {
super(props);
this.state = {count: props.initialCount};
this.tick = this.tick.bind(this);
}
tick() {
this.setState({count: this.state.count + 1});
}
render() {
return (
<div onClick={this.tick}>
Clicks: {this.state.count}
</div>
);
}
}
Counter.propTypes = { initialCount: PropTypes.number };
Counter.defaultProps = { initialCount: 0 };
export default Counter;