'use strict' 
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require('./check-versions')() 
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process.env.NODE_ENV = 'production' 
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const ora = require('ora') 
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const rm = require('rimraf') 
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const path = require('path') 
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const chalk = require('chalk') 
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const webpack = require('webpack') 
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const config = require('../config') 
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const webpackConfig = require('./webpack.prod.conf') 
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const spinner = ora('building for production...') 
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spinner.start() 
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rm(path.join(config.build.assetsRoot, config.build.assetsSubDirectory), err => { 
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  if (err) throw err 
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  webpack(webpackConfig, (err, stats) => { 
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    spinner.stop() 
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    if (err) throw err 
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    process.stdout.write(stats.toString({ 
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      colors: true, 
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      modules: false, 
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      children: false, // If you are using ts-loader, setting this to true will make TypeScript errors show up during build. 
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      chunks: false, 
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      chunkModules: false 
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    }) + '\n\n') 
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    if (stats.hasErrors()) { 
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      console.log(chalk.red('  Build failed with errors.\n')) 
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      process.exit(1) 
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    } 
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    console.log(chalk.cyan('  Build complete.\n')) 
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    console.log(chalk.yellow( 
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      '  Tip: built files are meant to be served over an HTTP server.\n' + 
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      '  Opening index.html over file:// won\'t work.\n' 
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    )) 
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  }) 
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}) 
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