"use strict"; // Do this as the first thing so that any code reading it knows the right env. process.env.BABEL_ENV = "production"; process.env.NODE_ENV = "production"; // If we want BAPS, specify it as the first command line argument. var args = process.argv.slice(2); // Remove node start.js if (args.length > 0 && args[0] === "baps") { process.env.NODE_ENV = "baps"; } // Makes the script crash on unhandled rejections instead of silently // ignoring them. In the future, promise rejections that are not handled will // terminate the Node.js process with a non-zero exit code. process.on("unhandledRejection", (err) => { throw err; }); // Ensure environment variables are read. require("../config/env"); const path = require("path"); const chalk = require("react-dev-utils/chalk"); const fs = require("fs-extra"); const webpack = require("webpack"); const configFactory = require("../config/webpack.config"); const paths = require("../config/paths"); const checkRequiredFiles = require("react-dev-utils/checkRequiredFiles"); const formatWebpackMessages = require("react-dev-utils/formatWebpackMessages"); const printHostingInstructions = require("react-dev-utils/printHostingInstructions"); const FileSizeReporter = require("react-dev-utils/FileSizeReporter"); const printBuildError = require("react-dev-utils/printBuildError"); const measureFileSizesBeforeBuild = FileSizeReporter.measureFileSizesBeforeBuild; const printFileSizesAfterBuild = FileSizeReporter.printFileSizesAfterBuild; const useYarn = fs.existsSync(paths.yarnLockFile); // These sizes are pretty large. We'll warn for bundles exceeding them. const WARN_AFTER_BUNDLE_GZIP_SIZE = 512 * 1024; const WARN_AFTER_CHUNK_GZIP_SIZE = 1024 * 1024; const isInteractive = process.stdout.isTTY; // Warn and crash if required files are missing if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) { process.exit(1); } // Generate configuration const config = configFactory("production"); // We require that you explicitly set browsers and do not fall back to // browserslist defaults. const { checkBrowsers } = require("react-dev-utils/browsersHelper"); checkBrowsers(paths.appPath, isInteractive) .then(() => { // First, read the current file sizes in build directory. // This lets us display how much they changed later. return measureFileSizesBeforeBuild(paths.appBuild); }) .then((previousFileSizes) => { // Remove all content but keep the directory so that // if you're in it, you don't end up in Trash fs.emptyDirSync(paths.appBuild); // Merge with the public folder copyPublicFolder(); // Start the webpack build return build(previousFileSizes); }) .then( ({ stats, previousFileSizes, warnings }) => { if (warnings.length) { console.log(chalk.yellow("Compiled with warnings.\n")); console.log(warnings.join("\n\n")); console.log( "\nSearch for the " + chalk.underline(chalk.yellow("keywords")) + " to learn more about each warning." ); console.log( "To ignore, add " + chalk.cyan("// eslint-disable-next-line") + " to the line before.\n" ); } else { console.log(chalk.green("Compiled successfully.\n")); } console.log("File sizes after gzip:\n"); printFileSizesAfterBuild( stats, previousFileSizes, paths.appBuild, WARN_AFTER_BUNDLE_GZIP_SIZE, WARN_AFTER_CHUNK_GZIP_SIZE ); console.log(); const appPackage = require(paths.appPackageJson); const publicUrl = paths.publicUrl; const publicPath = config.output.publicPath; const buildFolder = path.relative(process.cwd(), paths.appBuild); printHostingInstructions( appPackage, publicUrl, publicPath, buildFolder, useYarn ); }, (err) => { const tscCompileOnError = process.env.TSC_COMPILE_ON_ERROR === "true"; if (tscCompileOnError) { console.log( chalk.yellow( "Compiled with the following type errors (you may want to check these before deploying your app):\n" ) ); printBuildError(err); } else { console.log(chalk.red("Failed to compile.\n")); printBuildError(err); process.exit(1); } } ) .catch((err) => { if (err && err.message) { console.log(err.message); } process.exit(1); }); // Create the production build and print the deployment instructions. function build(previousFileSizes) { // We used to support resolving modules according to `NODE_PATH`. // This now has been deprecated in favor of jsconfig/tsconfig.json // This lets you use absolute paths in imports inside large monorepos: if (process.env.NODE_PATH) { console.log( chalk.yellow( "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." ) ); console.log(); } console.log("Creating an optimized production build..."); const compiler = webpack(config); return new Promise((resolve, reject) => { compiler.run((err, stats) => { let messages; if (err) { if (!err.message) { return reject(err); } messages = formatWebpackMessages({ errors: [err.message], warnings: [], }); } else { messages = formatWebpackMessages( stats.toJson({ all: false, warnings: true, errors: true }) ); } if (messages.errors.length) { // Only keep the first error. Others are often indicative // of the same problem, but confuse the reader with noise. if (messages.errors.length > 1) { messages.errors.length = 1; } return reject(new Error(messages.errors.join("\n\n"))); } if ( process.env.CI && (typeof process.env.CI !== "string" || process.env.CI.toLowerCase() !== "false") && messages.warnings.length ) { console.log( chalk.yellow( "\nTreating warnings as errors because process.env.CI = true.\n" + "Most CI servers set it automatically.\n" ) ); return reject(new Error(messages.warnings.join("\n\n"))); } return resolve({ stats, previousFileSizes, warnings: messages.warnings, }); }); }); } function copyPublicFolder() { fs.copySync(paths.appPublic, paths.appBuild, { dereference: true, filter: (file) => file !== paths.appHtml, }); }