我尝试将反应原生从0.49.3升级到0.55.3。我跟着官方[指南] [1]，当我跑react-native-git-upgrade时，我得到了以下日志：
git-upgrade info Check for updates
git-upgrade info Using yarn 1.5.1
git-upgrade info Read package.json files
git-upgrade info Check declared version
git-upgrade info Check matching versions
git-upgrade info Check React peer dependency
git-upgrade info Check that Git is installed
git-upgrade info Get information from NPM registry
git-upgrade info Upgrading to React Native 0.55.3, React 16.3.1
git-upgrade info Setup temporary working directory
git-upgrade info Configure Git environment
git-upgrade info Init Git repository
git-upgrade info Add all files to commit
git-upgrade info Commit current project sources
git-upgrade info Create a tag before updating sources
git-upgrade info Generate old version template
git-upgrade info Add updated files to commit
git-upgrade info Commit old version template
git-upgrade info Install the new version
warning " > react-native-maps@0.20.1" has incorrect peer dependency "react@16.0.0".
warning " > react-native-maps@0.20.1" has incorrect peer dependency "react-native@0.51.0".
warning " > @storybook/addon-storyshots@3.2.13" has unmet peer dependency "@storybook/addons@^3.2.13".
warning " > @storybook/addon-storyshots@3.2.13" has unmet peer dependency "@storybook/channels@^3.2.13".
warning " > @storybook/addon-storyshots@3.2.13" has unmet peer dependency "@storybook/react@^3.2.13".
warning " > @storybook/addon-storyshots@3.2.13" has unmet peer dependency "babel-core@^6.26.0".
warning "@storybook/react-native > @storybook/ui > react-icons@2.2.7" has incorrect peer dependency "react-dom@^0.14.0 || ^15.0.0 || ^16.0.0".
warning "@storybook/react-native > @storybook/ui > react-komposer@2.0.0" has incorrect peer dependency "react@^0.14.7 || ^15.0.0".
warning "@storybook/react-native > @storybook/ui > react-modal@2.4.1" has incorrect peer dependency "react@^0.14.0 || ^15.0.0".
warning "@storybook/react-native > @storybook/ui > react-modal@2.4.1" has incorrect peer dependency "react-dom@^0.14.0 || ^15.0.0".
warning "@storybook/react-native > @storybook/ui > react-treebeard@2.0.3" has incorrect peer dependency "react@^15.5.4".
warning "@storybook/react-native > @storybook/ui > react-treebeard@2.0.3" has incorrect peer dependency "react-dom@^15.5.4".
warning "@storybook/react-native > @storybook/ui > mantra-core > react-komposer@1.13.1" has incorrect peer dependency "react@^0.14.3 || ^15.0.0".
warning "@storybook/react-native > @storybook/ui > mantra-core > react-simple-di@1.2.0" has incorrect peer dependency "react@^0.14.0 || ^15.0.0".
warning "@storybook/react-native > @storybook/ui > react-komposer > react-stubber@1.0.0" has incorrect peer dependency "react@^0.14.7 || ^15.0.0".
warning "@storybook/react-native > @storybook/ui > react-treebeard > velocity-react@1.3.3" has incorrect peer dependency "react-dom@^15.3.0 || ^16.0.0".
warning "@storybook/react-native > @storybook/ui > react-treebeard > velocity-react > react-transition-group@1.2.1" has incorrect peer dependency "react-dom@^15.0.0 || ^16.0.0".
warning " > babel-jest@21.2.0" has unmet peer dependency "babel-core@^6.0.0 || ^7.0.0-alpha || ^7.0.0-beta || ^7.0.0".
warning " > enzyme@2.9.1" has incorrect peer dependency "react@0.13.x || 0.14.x || ^15.0.0-0 || 15.x".
warning " > react-addons-test-utils@15.4.2" has incorrect peer dependency "react-dom@^15.4.2".
warning "react-native > eslint-plugin-react-native@3.2.1" has unmet peer dependency "eslint@^3.17.0 || ^4.0.0".
git-upgrade info Generate new version template
git-upgrade info Add updated files to commit
git-upgrade info Commit new version template
git-upgrade info Generate the patch between the 2 versions
git-upgrade info Save the patch in temp directory
git-upgrade info Reset the 2 temporary commits
git-upgrade info Apply the patch
error: patch failed: .gitignore:51
Falling back to three-way merge...
Applied patch to '.gitignore' with conflicts.
error: ios/MyApp.xcodeproj/project.pbxproj: does not exist in index
error: ios/MyApp/AppDelegate.h: does not exist in index
error: ios/MyApp/AppDelegate.m: does not exist in index
error: ios/MyApp/main.m: does not exist in index
error: ios/MyAppTests/MyAppTests.m: does not exist in index
git-upgrade WARN The upgrade process succeeded but there might be conflicts to be resolved. See above for the list of files that have merge conflicts.
git-upgrade info Upgrade done
请注意以下几行：
error: ios/MyApp.xcodeproj/project.pbxproj: does not exist in index
error: ios/MyApp/AppDelegate.h: does not exist in index
error: ios/MyApp/AppDelegate.m: does not exist in index
error: ios/MyApp/main.m: does not exist in index
error: ios/MyAppTests/MyAppTests.m: does not exist in index
现在这些文件都丢失了。尽管有消息称成功，但尝试react-native -v收益
react-native-cli: 2.0.1
react-native: 0.55.3
现在MyApp/ios/目录几乎缺少所有原始文件。如果我尝试react-native run-ios，我会得到xcodebuild: error: Scheme MyApp is not currently configured for the build action.任何建议都会非常有帮助。
答案 0 :(得分：0)
想出来。对于那些有此问题的人，您需要做的就是删除您的android / ios文件夹并使用react-native eject，这将重新生成重建您的react-native项目所需的文件。这应该是官方反应原生升级指南IMO。