我正在尝试在 React 中导入 D3v4 以生成 Dash 组件。到目前为止,这是我的代码:
import React, {Component} from 'react';
import PropTypes from 'prop-types';
import * as d3 from 'd3';
function createBox(divId) {
var svgContainer = d3.select(divId).append('svg')
.attr('width', 200)
.attr('height', 200);
//Draw the Circle
svgContainer.append('circle')
.attr('cx', 30)
.attr('cy', 30)
.attr('r', 20);
}
/**
* ExampleComponent is an example component.
* It takes a property, `label`, and
* displays it.
* It renders an input with the property `value`
* which is editable by the user.
*/
export default class ExampleComponent extends Component {
constructor() {
super();
this.plot = this.plot.bind(this);
}
plot(props) {
createBox(props.id);
}
componentDidMount() {
this.plot(this.props);
}
componentWillReceiveProps(newProps) {
this.plot(newProps);
}
render() {
const {id} = this.props;
return (
<div id={id}/>
);
}
}
ExampleComponent.propTypes = {
/**
* The ID used to identify this compnent in Dash callbacks
*/
id: PropTypes.string
};
但是当我尝试使用$ npm run prepublish
它预发布 Dash 时会引发错误:
error Unexpected namespace import import/no-namespace
它又指向import * as d3 from 'd3';
我正在构建由Plotly提供的关于编写自己的组件的示例。