Setting WKWebViewOnly causes `cordova platform add ios` to fail

Bug Report

Problem

When setting WKWebViewOnly to true as an iOS platform preference (see https://github.com/apache/cordova-ios/pull/715), trying to run cordova platform add ios fails when the project does not have existing iOS as an existing platform.

What is expected to happen?

The command should succeed, and WKWebViewOnly should control the setting of WK_WEB_VIEW_ONLY in CordovaLib/CordovaLib.xcodeproj/project.pbxproj.

What does actually happen?

The command fails with the following error:

ENOENT: no such file or directory, open '/Users/ross/repos/my-project/platforms/ios/CordovaLib/CordovaLib.xcodeproj/project.pbxproj'

Information

Our build process removes the platforms and plugins directories prior to each build to ensure a clean slate for building. When adding the WKWebViewOnly preference, this causes the build to fail.

It seems like if iOS is already added as a platform when the WKWebViewOnly preference is added, the error does not occur.

The error not occur if the WKWebViewOnly preference is removed.

After I receive the error, I can see that the file platforms/ios/CordovaLib/CordovaLib.xcodeproj/project.pbxproj does indeed exist. So it seems like there might be some race condition where the project is trying to be modified before it is fully created?

Command or Code

I created an empty Cordova project that demonstrates the issue: https://github.com/l3ender/hello-cordova. Clone and follow steps in readme to reproduce.

If you have an existing project, you should be able to reproduce with the following:

rm -rf platforms/ plugins/
cordova platform add ios --verbose

Output from the above command:

-> cordova platform add ios --verbose
No scripts found for hook "before_platform_add".
Using cordova-fetch for cordova-ios@^5.1.0
Removing "cordova-" prefix from cordova-ios
Adding ios project...
PlatformApi successfully found for platform ios
Creating Cordova project for the iOS platform:
	Path: platforms/ios
	Package: com.example.hello
	Name: HelloWorld
Copying iOS template project to /Users/ross/repos/hello-cordova/platforms/ios
iOS project created with cordova-ios@5.1.0
Checking for any plugins added to the project that have not been installed in ios platform
No differences found between plugins added to project and installed in ios platform. Continuing...
PlatformApi successfully found for platform ios
Generating platform-specific config.xml from defaults for iOS at /Users/ross/repos/hello-cordova/platforms/ios/HelloWorld/config.xml
Merging project's config.xml into platform-specific iOS config.xml
Merging and updating files from [www, platforms/ios/platform_www] to platforms/ios/www
  mkdir platforms/ios/www/cordova-js-src
  copy  platforms/ios/platform_www/cordova-js-src/.eslintrc.yml platforms/ios/www/cordova-js-src/.eslintrc.yml (new file)
  copy  platforms/ios/platform_www/cordova-js-src/exec.js platforms/ios/www/cordova-js-src/exec.js (new file)
  copy  platforms/ios/platform_www/cordova-js-src/platform.js platforms/ios/www/cordova-js-src/platform.js (new file)
  mkdir platforms/ios/www/cordova-js-src/plugin
  mkdir platforms/ios/www/cordova-js-src/plugin/ios
  copy  platforms/ios/platform_www/cordova-js-src/plugin/ios/console.js platforms/ios/www/cordova-js-src/plugin/ios/console.js (new file)
  copy  platforms/ios/platform_www/cordova-js-src/plugin/ios/logger.js platforms/ios/www/cordova-js-src/plugin/ios/logger.js (new file)
  copy  platforms/ios/platform_www/cordova.js platforms/ios/www/cordova.js (updated file)
  copy  www/css/index.css platforms/ios/www/css/index.css (updated file)
  copy  www/js/index.js platforms/ios/www/js/index.js (updated file)
Current launch storyboard undefined
Not changing launch storyboard setting in info plist.
Wrote out iOS Bundle Version "1.0.0" to /Users/ross/repos/hello-cordova/platforms/ios/HelloWorld/HelloWorld-Info.plist
No need to update build settings for launch storyboard support.
Set PRODUCT_BUNDLE_IDENTIFIER to com.example.hello.
Set WK_WEB_VIEW_ONLY.
ENOENT: no such file or directory, open '/Users/ross/repos/hello-cordova/platforms/ios/CordovaLib/CordovaLib.xcodeproj/project.pbxproj'
Error: ENOENT: no such file or directory, open '/Users/ross/repos/hello-cordova/platforms/ios/CordovaLib/CordovaLib.xcodeproj/project.pbxproj'
    at Object.openSync (fs.js:440:3)
    at Object.readFileSync (fs.js:342:35)
    at pbxProject.parseSync (/Users/ross/repos/hello-cordova/node_modules/xcode/lib/pbxProject.js:61:28)
    at handleBuildSettings (/Users/ross/repos/hello-cordova/platforms/ios/cordova/lib/prepare.js:333:19)
    at updateProject (/Users/ross/repos/hello-cordova/platforms/ios/cordova/lib/prepare.js:234:12)
    at /Users/ross/repos/hello-cordova/platforms/ios/cordova/lib/prepare.js:59:20
    at _fulfilled (/Users/ross/repos/hello-cordova/node_modules/q/q.js:854:54)
    at /Users/ross/repos/hello-cordova/node_modules/q/q.js:883:30
    at Promise.promise.promiseDispatch (/Users/ross/repos/hello-cordova/node_modules/q/q.js:816:13)
    at /Users/ross/repos/hello-cordova/node_modules/q/q.js:570:49

Environment, Platform, Device

• Mac OSX 10.15.1 (Catalina) with latest Xcode (11.2.1).
• cordova-ios 5.1.0.

Version information

-> cordova -v
9.0.0 (cordova-lib@9.0.1)
-> npm -v
6.12.1
-> node -v
v12.13.1

Checklist

• I searched for existing GitHub issues
• I updated all Cordova tooling to most recent version
• I included all the necessary information above

[davutengin]

cordova platform add ios@5.1.1 solved my problem.

[vitaliykoziy]

Looks like it works if to do cordova platform add https://github.com/apache/cordova-ios

Response:

Warning: using prerelease platform ios@5.2.0-dev. Use ‘cordova platform add ios@latest’ to add the latest published version instead. Adding ios project… Creating Cordova project for the iOS platform: iOS project created with cordova-ios@5.2.0-dev