react-progressbar.js内容不会在反应项目中呈现

Question

我想在react.js项目中有一个循环进度条。在kimmobrunfeldt's react-progressbar.js installation notes之后，我设法将所述库包含在我的项目中。但是，由于某些我不知道的原因，实际的进度条不会呈现。 DOM检查器指示进度条的包装器在那里，但不包含其内容。使用npm构建时不会出现错误。

这是我的react.js项目设置：

webpack.config.js

var webpack = require('webpack');
var path = require('path');


var BUILD_DIR = path.resolve(__dirname, 'src/client/public');
var APP_DIR = path.resolve(__dirname, 'src/client/app');
  module.exports = {
  entry: [ APP_DIR + '/index.jsx'],
  output: { path: BUILD_DIR, filename: 'bundle.js'},
  module: {
    loaders: [
      { test: /\.jsx?/, include : APP_DIR, loader: 'babel'},
      { test: /\.css$/, loader: "style-loader!css-loader" }
    ]
  }
}

的package.json

{
  "name": "hello-react",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "babel": {
    "presets": [
      "es2015",
      "react"
    ]
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "dev": "./node_modules/.bin/webpack -d --watch"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "babel-loader": "^6.2.8",
    "json-loader": "^0.5.4",
    "react": "^0.14.7",
    "react-dom": "^0.14.7",
    "react-progressbar.js": "^0.2.0",
    "webpack": "^1.13.3"
  },
  "devDependencies": {
    "babel-core": "^6.4.5",
    "babel-loader": "^6.2.8",
    "babel-preset-es2015": "^6.3.13",
    "babel-preset-react": "^6.16.0",
    "css-loader": "^0.26.1",
    "react": "^0.14.8",
    "webpack": "^1.13.3",
    "webpack-dev-server": "^1.16.2",
    "webpack-loader-modules": "^1.1.0"
  }
}

index.jsx

import React from 'react';
import {render} from 'react-dom';
import progressBar from 'react-progressbar.js';

// ...

// ...
var Circle = progressBar.Circle;

class App extends React.Component {
  render () {
    return (

      <div>
      <p> Hello React!</p>

      <Circle
          progress={1}
          text={'test'}
          initialAnimate= {true}
          containerClassName= {'progressbar-container'}
          />
      </div>

    );
  }
}

// ...


render(<App/>, document.getElementById('app'));