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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,58 @@ | ||
| import React from 'react'; | ||
| import React, { useState, useEffect } from 'react'; | ||
|
|
||
| function DataVisualization() { | ||
| return <h3>Data Visualization Component</h3>; | ||
| const [ChartComponent, setChartComponent] = useState(null); | ||
|
|
||
| useEffect(() => { | ||
| const loadChart = async () => { | ||
| const { Chart, registerables } = await import('chart.js'); | ||
| Chart.register(...registerables); | ||
| const { Bar } = await import('react-chartjs-2'); | ||
| setChartComponent(() => Bar); | ||
| }; | ||
|
|
||
| loadChart(); | ||
| }, []); | ||
|
|
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| const data = { | ||
| labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'], | ||
| datasets: [{ | ||
| label: '# of Votes', | ||
| data: [12, 19, 3, 5, 2, 3], | ||
| backgroundColor: [ | ||
| 'rgba(255, 99, 132, 0.2)', | ||
| 'rgba(54, 162, 235, 0.2)', | ||
| 'rgba(255, 206, 86, 0.2)', | ||
| 'rgba(75, 192, 192, 0.2)', | ||
| 'rgba(153, 102, 255, 0.2)', | ||
| 'rgba(255, 159, 64, 0.2)' | ||
| ], | ||
| borderColor: [ | ||
| 'rgba(255, 99, 132, 1)', | ||
| 'rgba(54, 162, 235, 1)', | ||
| 'rgba(255, 206, 86, 1)', | ||
| 'rgba(75, 192, 192, 1)', | ||
| 'rgba(153, 102, 255, 1)', | ||
| 'rgba(255, 159, 64, 1)' | ||
| ], | ||
| borderWidth: 1 | ||
| }] | ||
| }; | ||
|
|
||
| const options = { | ||
| scales: { | ||
| y: { | ||
| beginAtZero: true | ||
| } | ||
| } | ||
| }; | ||
|
|
||
| return ( | ||
| <div> | ||
| <h2>Data Visualization</h2> | ||
| {ChartComponent && <ChartComponent data={data} options={options} />} | ||
| </div> | ||
| ); | ||
| } | ||
|
|
||
| export default DataVisualization; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| const path = require('path'); | ||
| const HtmlWebpackPlugin = require('html-webpack-plugin'); | ||
| const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin; | ||
|
|
||
| module.exports = (env, argv) => { | ||
| const config = { | ||
| entry: './src/index.js', | ||
| output: { | ||
| path: path.resolve(__dirname, 'dist'), | ||
| filename: '[name].[contenthash].js', | ||
| clean: true, | ||
| publicPath: '/', | ||
| }, | ||
| module: { | ||
| rules: [ | ||
| { | ||
| test: /\.(js|jsx)$/, | ||
| exclude: /node_modules/, | ||
| use: { | ||
| loader: 'babel-loader', | ||
| options: { | ||
| presets: ['@babel/preset-env', '@babel/preset-react'] | ||
| } | ||
| } | ||
| } | ||
| ] | ||
| }, | ||
| optimization: { | ||
| splitChunks: { | ||
| chunks: 'all', | ||
| }, | ||
| }, | ||
| devServer: { | ||
| static: { | ||
| directory: path.join(__dirname, 'public'), | ||
| }, | ||
| historyApiFallback: true, | ||
| open: true, | ||
| hot: true, | ||
| port: 3000, | ||
| }, | ||
| resolve: { | ||
| extensions: ['.js', '.jsx'], | ||
| }, | ||
| plugins: [ | ||
| new HtmlWebpackPlugin({ | ||
| template: './public/index.html', | ||
| }), | ||
| ], | ||
| }; | ||
|
|
||
| if (env.analyze) { | ||
| config.plugins.push(new BundleAnalyzerPlugin()); | ||
| } | ||
|
|
||
| return config; | ||
| }; |
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