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Check for errors and warnings in build script as well (facebook#440)
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| Original file line number | Diff line number | Diff line change |
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| /** | ||
| * Copyright (c) 2015-present, Facebook, Inc. | ||
| * All rights reserved. | ||
| * | ||
| * This source code is licensed under the BSD-style license found in the | ||
| * LICENSE file in the root directory of this source tree. An additional grant | ||
| * of patent rights can be found in the PATENTS file in the same directory. | ||
| */ | ||
|
|
||
| var chalk = require('chalk'); | ||
|
|
||
| // Some custom utilities to prettify Webpack output. | ||
| // This is a little hacky. | ||
| // It would be easier if webpack provided a rich error object. | ||
| var friendlySyntaxErrorLabel = 'Syntax error:'; | ||
| function isLikelyASyntaxError(message) { | ||
| return message.indexOf(friendlySyntaxErrorLabel) !== -1; | ||
| } | ||
| function formatMessage(message) { | ||
| return message | ||
| // Make some common errors shorter: | ||
| .replace( | ||
| // Babel syntax error | ||
| 'Module build failed: SyntaxError:', | ||
| friendlySyntaxErrorLabel | ||
| ) | ||
| .replace( | ||
| // Webpack file not found error | ||
| /Module not found: Error: Cannot resolve 'file' or 'directory'/, | ||
| 'Module not found:' | ||
| ) | ||
| // Internal stacks are generally useless so we strip them | ||
| .replace(/^\s*at\s.*:\d+:\d+[\s\)]*\n/gm, '') // at ... ...:x:y | ||
| // Webpack loader names obscure CSS filenames | ||
| .replace('./~/css-loader!./~/postcss-loader!', ''); | ||
| } | ||
|
|
||
| module.exports = function (stats) { | ||
| // We have switched off the default Webpack output in WebpackDevServer | ||
| // options so we are going to "massage" the warnings and errors and present | ||
| // them in a readable focused way. | ||
| // We use stats.toJson({}, true) to make output more compact and readable: | ||
| // https://github.com/facebookincubator/create-react-app/issues/401#issuecomment-238291901 | ||
| var json = stats.toJson({}, true); | ||
| var formattedErrors = json.errors.map(message => | ||
| 'Error in ' + formatMessage(message) | ||
| ); | ||
| var formattedWarnings = json.warnings.map(message => | ||
| 'Warning in ' + formatMessage(message) | ||
| ); | ||
| if (stats.hasErrors()) { | ||
| console.log(chalk.red('Failed to compile.')); | ||
| console.log(); | ||
| if (formattedErrors.some(isLikelyASyntaxError)) { | ||
| // If there are any syntax errors, show just them. | ||
| // This prevents a confusing ESLint parsing error | ||
| // preceding a much more useful Babel syntax error. | ||
| formattedErrors = formattedErrors.filter(isLikelyASyntaxError); | ||
| } | ||
| formattedErrors.forEach(message => { | ||
| console.log(message); | ||
| console.log(); | ||
| }); | ||
| // If errors exist, ignore warnings. | ||
| return; | ||
| } | ||
| if (stats.hasWarnings()) { | ||
| console.log(chalk.yellow('Compiled with warnings.')); | ||
| console.log(); | ||
| formattedWarnings.forEach(message => { | ||
| console.log(message); | ||
| console.log(); | ||
| }); | ||
| // Teach some ESLint tricks. | ||
| console.log('You may use special comments to disable some warnings.'); | ||
| console.log('Use ' + chalk.yellow('// eslint-disable-next-line') + ' to ignore the next line.'); | ||
| console.log('Use ' + chalk.yellow('/* eslint-disable */') + ' to ignore all warnings in a file.'); | ||
| } | ||
| }; |