| 1 | 'use strict'; |
| 2 | |
| 3 | // Do this as the first thing so that any code reading it knows the right env. |
| 4 | process.env.BABEL_ENV = 'production'; |
| 5 | process.env.NODE_ENV = 'production'; |
| 6 | |
| 7 | // Makes the script crash on unhandled rejections instead of silently |
| 8 | // ignoring them. In the future, promise rejections that are not handled will |
| 9 | // terminate the Node.js process with a non-zero exit code. |
| 10 | process.on('unhandledRejection', err => { |
| 11 | throw err; |
| 12 | }); |
| 13 | |
| 14 | // Ensure environment variables are read. |
| 15 | require('../config/env'); |
| 16 | |
| 17 | const path = require('path'); |
| 18 | const chalk = require('chalk'); |
| 19 | const fs = require('fs-extra'); |
| 20 | const webpack = require('webpack'); |
| 21 | const configFactory = require('../config/webpack.config'); |
| 22 | const paths = require('../config/paths'); |
| 23 | const checkRequiredFiles = require('react-dev-utils/checkRequiredFiles'); |
| 24 | const formatWebpackMessages = require('react-dev-utils/formatWebpackMessages'); |
| 25 | const printHostingInstructions = require('react-dev-utils/printHostingInstructions'); |
| 26 | const FileSizeReporter = require('react-dev-utils/FileSizeReporter'); |
| 27 | const printBuildError = require('react-dev-utils/printBuildError'); |
| 28 | |
| 29 | const measureFileSizesBeforeBuild = |
| 30 | FileSizeReporter.measureFileSizesBeforeBuild; |
| 31 | const printFileSizesAfterBuild = FileSizeReporter.printFileSizesAfterBuild; |
| 32 | const useYarn = fs.existsSync(paths.yarnLockFile); |
| 33 | |
| 34 | // These sizes are pretty large. We'll warn for bundles exceeding them. |
| 35 | const WARN_AFTER_BUNDLE_GZIP_SIZE = 512 * 1024; |
| 36 | const WARN_AFTER_CHUNK_GZIP_SIZE = 1024 * 1024; |
| 37 | |
| 38 | const isInteractive = process.stdout.isTTY; |
| 39 | |
| 40 | // Warn and crash if required files are missing |
| 41 | if (!checkRequiredFiles([paths.appIndexJs])) { |
| 42 | process.exit(1); |
| 43 | } |
| 44 | |
| 45 | const argv = process.argv.slice(2); |
| 46 | const writeStatsJson = argv.indexOf('--stats') !== -1; |
| 47 | |
| 48 | // Generate configuration |
| 49 | const config = configFactory('production'); |
| 50 | |
| 51 | // We require that you explicitly set browsers and do not fall back to |
| 52 | // browserslist defaults. |
| 53 | const {checkBrowsers} = require('react-dev-utils/browsersHelper'); |
| 54 | checkBrowsers(paths.appPath, isInteractive) |
| 55 | .then(() => { |
| 56 | // First, read the current file sizes in build directory. |
| 57 | // This lets us display how much they changed later. |
| 58 | return measureFileSizesBeforeBuild(paths.appBuild); |
| 59 | }) |
| 60 | .then(previousFileSizes => { |
| 61 | // Remove all content but keep the directory so that |
| 62 | // if you're in it, you don't end up in Trash |
| 63 | fs.emptyDirSync(paths.appBuild); |
| 64 | // Merge with the public folder |
| 65 | copyPublicFolder(); |
| 66 | // Start the webpack build |
| 67 | return build(previousFileSizes); |
| 68 | }) |
| 69 | .then( |
| 70 | ({stats, previousFileSizes, warnings}) => { |
| 71 | if (warnings.length) { |
| 72 | console.log(chalk.yellow('Compiled with warnings.\n')); |
| 73 | console.log(warnings.join('\n\n')); |
| 74 | console.log( |
| 75 | '\nSearch for the ' + |
| 76 | chalk.underline(chalk.yellow('keywords')) + |
| 77 | ' to learn more about each warning.' |
| 78 | ); |
| 79 | console.log( |
| 80 | 'To ignore, add ' + |
| 81 | chalk.cyan('// eslint-disable-next-line') + |
| 82 | ' to the line before.\n' |
| 83 | ); |
| 84 | } else { |
| 85 | console.log(chalk.green('Compiled successfully.\n')); |
| 86 | } |
| 87 | |
| 88 | console.log('File sizes after gzip:\n'); |
| 89 | printFileSizesAfterBuild( |
| 90 | stats, |
| 91 | previousFileSizes, |
| 92 | paths.appBuild, |
| 93 | WARN_AFTER_BUNDLE_GZIP_SIZE, |
| 94 | WARN_AFTER_CHUNK_GZIP_SIZE |
| 95 | ); |
| 96 | console.log(); |
| 97 | |
| 98 | const appPackage = require(paths.appPackageJson); |
| 99 | const publicUrl = paths.publicUrlOrPath; |
| 100 | const publicPath = config.output.publicPath; |
| 101 | const buildFolder = path.relative(process.cwd(), paths.appBuild); |
| 102 | printHostingInstructions( |
| 103 | appPackage, |
| 104 | publicUrl, |
| 105 | publicPath, |
| 106 | buildFolder, |
| 107 | useYarn |
| 108 | ); |
| 109 | }, |
| 110 | err => { |
| 111 | const tscCompileOnError = process.env.TSC_COMPILE_ON_ERROR === 'true'; |
| 112 | if (tscCompileOnError) { |
| 113 | console.log( |
| 114 | chalk.yellow( |
| 115 | 'Compiled with the following type errors (you may want to check these before deploying your app):\n' |
| 116 | ) |
| 117 | ); |
| 118 | printBuildError(err); |
| 119 | } else { |
| 120 | console.log(chalk.red('Failed to compile.\n')); |
| 121 | printBuildError(err); |
| 122 | process.exit(1); |
| 123 | } |
| 124 | } |
| 125 | ) |
| 126 | .catch(err => { |
| 127 | if (err && err.message) { |
| 128 | console.log(err.message); |
| 129 | } |
| 130 | process.exit(1); |
| 131 | }); |
| 132 | |
| 133 | // Create the production build and print the deployment instructions. |
| 134 | function build(previousFileSizes) { |
| 135 | console.log('Creating an optimized production build...'); |
| 136 | |
| 137 | const compiler = webpack(config); |
| 138 | return new Promise((resolve, reject) => { |
| 139 | compiler.run((err, stats) => { |
| 140 | let messages; |
| 141 | if (err) { |
| 142 | if (!err.message) { |
| 143 | return reject(err); |
| 144 | } |
| 145 | |
| 146 | let errMessage = err.message; |
| 147 | |
| 148 | // Add additional information for postcss errors |
| 149 | if (Object.prototype.hasOwnProperty.call(err, 'postcssNode')) { |
| 150 | errMessage += |
| 151 | '\nCompileError: Begins at CSS selector ' + |
| 152 | err['postcssNode'].selector; |
| 153 | } |
| 154 | |
| 155 | messages = formatWebpackMessages({ |
| 156 | errors: [errMessage], |
| 157 | warnings: [], |
| 158 | }); |
| 159 | } else { |
| 160 | messages = formatWebpackMessages( |
| 161 | stats.toJson({all: false, warnings: true, errors: true}) |
| 162 | ); |
| 163 | } |
| 164 | if (messages.errors.length) { |
| 165 | // Only keep the first error. Others are often indicative |
| 166 | // of the same problem, but confuse the reader with noise. |
| 167 | if (messages.errors.length > 1) { |
| 168 | messages.errors.length = 1; |
| 169 | } |
| 170 | return reject(new Error(messages.errors.join('\n\n'))); |
| 171 | } |
| 172 | if ( |
| 173 | process.env.CI && |
| 174 | (typeof process.env.CI !== 'string' || |
| 175 | process.env.CI.toLowerCase() !== 'false') && |
| 176 | messages.warnings.length |
| 177 | ) { |
| 178 | // Ignore sourcemap warnings in CI builds. See #8227 for more info. |
| 179 | const filteredWarnings = messages.warnings.filter( |
| 180 | w => !/Failed to parse source map/.test(w) |
| 181 | ); |
| 182 | if (filteredWarnings.length) { |
| 183 | console.log( |
| 184 | chalk.yellow( |
| 185 | '\nTreating warnings as errors because process.env.CI = true.\n' + |
| 186 | 'Most CI servers set it automatically.\n' |
| 187 | ) |
| 188 | ); |
| 189 | return reject(new Error(filteredWarnings.join('\n\n'))); |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | const resolveArgs = { |
| 194 | stats, |
| 195 | previousFileSizes, |
| 196 | warnings: messages.warnings, |
| 197 | }; |
| 198 | |
| 199 | return resolve(resolveArgs); |
| 200 | }); |
| 201 | }); |
| 202 | } |
| 203 | |
| 204 | function copyPublicFolder() { |
| 205 | fs.copySync('public', 'build', { |
| 206 | dereference: true, |
| 207 | }); |
| 208 | } |