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8 |
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9 | 'use strict';
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10 |
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11 |
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12 | process.env.BABEL_ENV = 'development';
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13 | process.env.NODE_ENV = 'development';
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14 |
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15 |
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16 |
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17 |
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18 | process.on('unhandledRejection', err => {
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19 | throw err;
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20 | });
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21 |
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22 |
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23 | require('../config/env');
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24 |
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25 |
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26 | const verifyPackageTree = require('./utils/verifyPackageTree');
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27 | if (process.env.SKIP_PREFLIGHT_CHECK !== 'true') {
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28 | verifyPackageTree();
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29 | }
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30 | const verifyTypeScriptSetup = require('./utils/verifyTypeScriptSetup');
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31 | verifyTypeScriptSetup();
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32 |
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33 |
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34 | const fs = require('fs');
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35 | const chalk = require('react-dev-utils/chalk');
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36 | const webpack = require('webpack');
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37 | const WebpackDevServer = require('webpack-dev-server');
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38 | const clearConsole = require('react-dev-utils/clearConsole');
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39 | const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles');
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40 | const {
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41 | choosePort,
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42 | createCompiler,
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43 | prepareProxy,
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44 | prepareUrls,
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45 | } = require('react-dev-utils/WebpackDevServerUtils');
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46 | const openBrowser = require('react-dev-utils/openBrowser');
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47 | const paths = require('../config/paths');
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48 | const configFactory = require('../config/webpack.config');
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49 | const createDevServerConfig = require('../config/webpackDevServer.config');
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50 |
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51 | const useYarn = fs.existsSync(paths.yarnLockFile);
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52 | const isInteractive = process.stdout.isTTY;
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53 |
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54 |
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55 | if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
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56 | process.exit(1);
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57 | }
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58 |
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59 |
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60 | const DEFAULT_PORT = parseInt(process.env.PORT, 10) || 3000;
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61 | const HOST = process.env.HOST || '0.0.0.0';
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62 |
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63 | if (process.env.HOST) {
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64 | console.log(
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65 | chalk.cyan(
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66 | `Attempting to bind to HOST environment variable: ${chalk.yellow(
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67 | chalk.bold(process.env.HOST)
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68 | )}`
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69 | )
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70 | );
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71 | console.log(
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72 | `If this was unintentional, check that you haven't mistakenly set it in your shell.`
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73 | );
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74 | console.log(
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75 | `Learn more here: ${chalk.yellow('https://bit.ly/CRA-advanced-config')}`
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76 | );
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77 | console.log();
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78 | }
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79 |
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80 |
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81 |
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82 | const { checkBrowsers } = require('react-dev-utils/browsersHelper');
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83 | checkBrowsers(paths.appPath, isInteractive)
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84 | .then(() => {
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85 |
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86 |
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87 | return choosePort(HOST, DEFAULT_PORT);
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88 | })
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89 | .then(port => {
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90 | if (port == null) {
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91 |
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92 | return;
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93 | }
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94 | const config = configFactory('development');
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95 | const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
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96 | const appName = require(paths.appPackageJson).name;
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97 | const useTypeScript = fs.existsSync(paths.appTsConfig);
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98 | const tscCompileOnError = process.env.TSC_COMPILE_ON_ERROR === 'true';
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99 | const urls = prepareUrls(protocol, HOST, port);
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100 | const devSocket = {
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101 | warnings: warnings =>
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102 | devServer.sockWrite(devServer.sockets, 'warnings', warnings),
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103 | errors: errors =>
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104 | devServer.sockWrite(devServer.sockets, 'errors', errors),
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105 | };
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106 |
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107 | const compiler = createCompiler({
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108 | appName,
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109 | config,
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110 | devSocket,
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111 | urls,
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112 | useYarn,
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113 | useTypeScript,
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114 | tscCompileOnError,
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115 | webpack,
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116 | });
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117 |
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118 | const proxySetting = require(paths.appPackageJson).proxy;
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119 | const proxyConfig = prepareProxy(proxySetting, paths.appPublic);
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120 |
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121 | const serverConfig = createDevServerConfig(
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122 | proxyConfig,
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123 | urls.lanUrlForConfig
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124 | );
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125 | const devServer = new WebpackDevServer(compiler, serverConfig);
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126 |
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127 | devServer.listen(port, HOST, err => {
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128 | if (err) {
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129 | return console.log(err);
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130 | }
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131 | if (isInteractive) {
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132 | clearConsole();
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133 | }
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134 |
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135 |
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136 |
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137 |
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138 | if (process.env.NODE_PATH) {
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139 | console.log(
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140 | chalk.yellow(
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141 | 'Setting NODE_PATH to resolve modules absolutely has been deprecated in favor of setting baseUrl in jsconfig.json (or tsconfig.json if you are using TypeScript) and will be removed in a future major release of create-react-app.'
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142 | )
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143 | );
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144 | console.log();
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145 | }
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146 |
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147 | console.log(chalk.cyan('Starting the development server...\n'));
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148 | openBrowser(urls.localUrlForBrowser);
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149 | });
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150 |
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151 | ['SIGINT', 'SIGTERM'].forEach(function(sig) {
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152 | process.on(sig, function() {
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153 | devServer.close();
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154 | process.exit();
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155 | });
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156 | });
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157 | })
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158 | .catch(err => {
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159 | if (err && err.message) {
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160 | console.log(err.message);
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161 | }
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162 | process.exit(1);
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163 | });
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