Chart.register 不是一个函数

Question

我正在尝试这个reactjs流图表的例子 https://nagix.github.io/chartjs-plugin-streaming/latest/tutorials/react/app.html

但我似乎无法让它工作，它编译没有问题，但在浏览器中不显示任何内容，当我检查浏览器控制台时，它有错误消息：

App.js:7 Uncaught TypeError: react_chartjs_2__WEBPACK_IMPORTED_MODULE_5__.Chart.register is not a function
    at Module../src/App.js (App.js:7:1)
    at Module.options.factory (react refresh:6:1)
    at __webpack_require__ (bootstrap:24:1)
    at fn (hot module replacement:61:1)
    at Module../src/index.js (App.js:46:1)
    at Module.options.factory (react refresh:6:1)
    at __webpack_require__ (bootstrap:24:1)
    at startup:7:1
    at startup:7:1
./src/App.js    @   App.js:7
options.factory @   react refresh:6
__webpack_require__ @   bootstrap:24
fn  @   hot module replacement:61
./src/index.js  @   App.js:46
options.factory @   react refresh:6
__webpack_require__ @   bootstrap:24
(anonymous) @   startup:7
(anonymous) @   startup:7

我尝试了Chart.plugins.register(StreamingPlugin)，然后错误消息是：

App.js:7 Uncaught TypeError: Cannot read properties of undefined (reading 'register')
    at Module../src/App.js (App.js:7:1)
    at Module.options.factory (react refresh:6:1)
    at __webpack_require__ (bootstrap:24:1)
    at fn (hot module replacement:61:1)
    at Module../src/index.js (App.js:46:1)
    at Module.options.factory (react refresh:6:1)
    at __webpack_require__ (bootstrap:24:1)
    at startup:7:1
    at startup:7:1
./src/App.js    @   App.js:7
options.factory @   react refresh:6
__webpack_require__ @   bootstrap:24
fn  @   hot module replacement:61
./src/index.js  @   App.js:46
options.factory @   react refresh:6
__webpack_require__ @   bootstrap:24
(anonymous) @   startup:7
(anonymous) @   startup:7

Answer 1

您需要从 Chart.js 而不是从 Reacht-chartjs-2 导入 Chart 来注册它，如下所示：

import {Chart} from 'chart.js';
import {Chart as ReactChart} from 'react-chartjs-2';
import StreamingPlugin from 'chartjs-plugin-streaming';

Chart.register(StreamingPlugin);