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Add preflight check to guard against wrong versions of webpack/eslint…
…/jest higher up the tree (facebook#3771) * Run real scripts in local development * Add preflight check warning * I know what I am doing * Move preflight check into individual scripts This ensures we don't try to filter NODE_PATH twice, accidentally removing the now-absolute path. * Slightly tweak the wording * Fix lint
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153
packages/react-scripts/scripts/utils/verifyPackageTree.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| // @remove-file-on-eject | ||
| /** | ||
| * Copyright (c) 2015-present, Facebook, Inc. | ||
| * | ||
| * This source code is licensed under the MIT license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| */ | ||
|
|
||
| 'use strict'; | ||
|
|
||
| const chalk = require('chalk'); | ||
| const fs = require('fs'); | ||
| const path = require('path'); | ||
|
|
||
| // We assume that having wrong versions of these | ||
| // in the tree will likely break your setup. | ||
| // This is a relatively low-effort way to find common issues. | ||
| function verifyPackageTree() { | ||
| const depsToCheck = [ | ||
| // These are packages most likely to break in practice. | ||
| // See https://github.com/facebookincubator/create-react-app/issues/1795 for reasons why. | ||
| // I have not included Babel here because plugins typically don't import Babel (so it's not affected). | ||
| 'eslint', | ||
| 'jest', | ||
| 'webpack', | ||
| 'webpack-dev-server', | ||
| ]; | ||
| // Inlined from semver-regex, MIT license. | ||
| // Don't want to make this a dependency after ejecting. | ||
| const getSemverRegex = () => | ||
| /\bv?(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)\.(?:0|[1-9]\d*)(?:-[\da-z-]+(?:\.[\da-z-]+)*)?(?:\+[\da-z-]+(?:\.[\da-z-]+)*)?\b/gi; | ||
| const ownPackageJson = require('../../package.json'); | ||
| const expectedVersionsByDep = {}; | ||
| // Gather wanted deps | ||
| depsToCheck.forEach(dep => { | ||
| const expectedVersion = ownPackageJson.dependencies[dep]; | ||
| if (!expectedVersion) { | ||
| throw new Error('This dependency list is outdated, fix it.'); | ||
| } | ||
| if (!getSemverRegex().test(expectedVersion)) { | ||
| throw new Error( | ||
| `The ${dep} package should be pinned, instead got version ${expectedVersion}.` | ||
| ); | ||
| } | ||
| expectedVersionsByDep[dep] = expectedVersion; | ||
| }); | ||
| // Verify we don't have other versions up the tree | ||
| let currentDir = __dirname; | ||
| // eslint-disable-next-line no-constant-condition | ||
| while (true) { | ||
| const previousDir = currentDir; | ||
| currentDir = path.resolve(currentDir, '..'); | ||
| if (currentDir === previousDir) { | ||
| // We've reached the root. | ||
| break; | ||
| } | ||
| const maybeNodeModules = path.resolve(currentDir, 'node_modules'); | ||
| if (!fs.existsSync(maybeNodeModules)) { | ||
| continue; | ||
| } | ||
| depsToCheck.forEach(dep => { | ||
| const maybeDep = path.resolve(maybeNodeModules, dep); | ||
| if (!fs.existsSync(maybeDep)) { | ||
| return; | ||
| } | ||
| const maybeDepPackageJson = path.resolve(maybeDep, 'package.json'); | ||
| if (!fs.existsSync(maybeDepPackageJson)) { | ||
| return; | ||
| } | ||
| const depPackageJson = JSON.parse( | ||
| fs.readFileSync(maybeDepPackageJson, 'utf8') | ||
| ); | ||
| const expectedVersion = expectedVersionsByDep[dep]; | ||
| if (depPackageJson.version !== expectedVersion) { | ||
| console.error( | ||
| chalk.red( | ||
| `\nThere might be a problem with the project dependency tree.\n` + | ||
| `It is likely ${chalk.bold( | ||
| 'not' | ||
| )} a bug in Create React App, but something you need to fix locally.\n\n` | ||
| ) + | ||
| `The ${chalk.bold( | ||
| ownPackageJson.name | ||
| )} package provided by Create React App requires a dependency:\n\n` + | ||
| chalk.green( | ||
| ` "${chalk.bold(dep)}": "${chalk.bold(expectedVersion)}"\n\n` | ||
| ) + | ||
| `Don't try to install it manually: your package manager does it automatically.\n` + | ||
| `However, a different version of ${chalk.bold( | ||
| dep | ||
| )} was detected higher up in the tree:\n\n` + | ||
| ` ${chalk.bold(chalk.red(maybeDep))} (version: ${chalk.bold( | ||
| chalk.red(depPackageJson.version) | ||
| )}) \n\n` + | ||
| `Manually installing incompatible versions is known to cause hard-to-debug issues.\n` + | ||
| `To fix the dependency tree, try following the steps below in the exact order:\n\n` + | ||
| ` ${chalk.cyan('1.')} Delete ${chalk.bold( | ||
| 'package-lock.json' | ||
| )} (${chalk.underline('not')} ${chalk.bold( | ||
| 'package.json' | ||
| )}!) and/or ${chalk.bold( | ||
| 'yarn.lock' | ||
| )} in your project folder.\n\n` + | ||
| ` ${chalk.cyan('2.')} Delete ${chalk.bold( | ||
| 'node_modules' | ||
| )} in your project folder.\n\n` + | ||
| ` ${chalk.cyan('3.')} Remove "${chalk.bold( | ||
| dep | ||
| )}" from ${chalk.bold('dependencies')} and/or ${chalk.bold( | ||
| 'devDependencies' | ||
| )} in the ${chalk.bold( | ||
| 'package.json' | ||
| )} file in your project folder.\n\n` + | ||
| ` ${chalk.cyan('4.')} Run ${chalk.bold( | ||
| 'npm install' | ||
| )} or ${chalk.bold( | ||
| 'yarn' | ||
| )}, depending on the package manager you use.\n\n` + | ||
| `In most cases, this should be enough to fix the problem.\n` + | ||
| `If this has not helped, there are a few other things you can try:\n\n` + | ||
| ` ${chalk.cyan('5.')} If you used ${chalk.bold( | ||
| 'npm' | ||
| )}, install ${chalk.bold( | ||
| 'yarn' | ||
| )} (http://yarnpkg.com/) and repeat the above steps with it instead.\n` + | ||
| ` This may help because npm has known issues with package hoisting which may get resolved in future versions.\n\n` + | ||
| ` ${chalk.cyan('6.')} Check if ${chalk.bold( | ||
| maybeDep | ||
| )} is outside your project directory.\n` + | ||
| ` For example, you might have accidentally installed something in your home folder.\n\n` + | ||
| ` ${chalk.cyan('7.')} Try running ${chalk.bold( | ||
| `npm ls ${dep}` | ||
| )} in your project folder.\n` + | ||
| ` This will tell you which ${chalk.underline( | ||
| 'other' | ||
| )} package (apart from the expected ${chalk.bold( | ||
| ownPackageJson.name | ||
| )}) installed ${chalk.bold(dep)}.\n\n` + | ||
| `If nothing else helps, add ${chalk.bold( | ||
| 'SKIP_PREFLIGHT_CHECK=true' | ||
| )} to an ${chalk.bold('.env')} file in your project.\n` + | ||
| `That would permanently disable this preflight check in case you want to proceed anyway.\n\n` + | ||
| chalk.cyan( | ||
| `P.S. We know this message is long but please read the steps above :-) We hope you find them helpful!\n` | ||
| ) | ||
| ); | ||
| process.exit(1); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| module.exports = verifyPackageTree; |