Jan Piotrowski (Sujan) created CB-13937:
-------------------------------------------

             Summary: `cordova platform add ios` fails if `ios` folder is 
present
                 Key: CB-13937
                 URL: https://issues.apache.org/jira/browse/CB-13937
             Project: Apache Cordova
          Issue Type: Bug
          Components: cordova-cli, cordova-fetch
    Affects Versions: 8.0.0
            Reporter: Jan Piotrowski (Sujan)


If there is a folder called like the platform you want to install, it will 
fail. 

See here for an example where an `ios` folder was present before executing 
`cordova platform add ios`:

{code}
```
MacBook-Pro:project sujan$ cordova platform add ios
(node:3439) UnhandledPromiseRejectionWarning: CordovaError: Error: npm: Command 
failed with exit code 1 Error output:
npm ERR! code ENOLOCAL
npm ERR! Could not install from "ios" as it does not contain a package.json 
file.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/sujan/.npm/_logs/2018-03-01T19_56_48_106Z-debug.log
    at 
/Users/sujan/.nvm/versions/node/v9.4.0/lib/node_modules/cordova/node_modules/cordova-fetch/index.js:104:29
    at _rejected 
(/Users/sujan/.nvm/versions/node/v9.4.0/lib/node_modules/cordova/node_modules/q/q.js:864:24)
    at 
/Users/sujan/.nvm/versions/node/v9.4.0/lib/node_modules/cordova/node_modules/q/q.js:890:30
    at Promise.when 
(/Users/sujan/.nvm/versions/node/v9.4.0/lib/node_modules/cordova/node_modules/q/q.js:1142:31)
    at Promise.promise.promiseDispatch 
(/Users/sujan/.nvm/versions/node/v9.4.0/lib/node_modules/cordova/node_modules/q/q.js:808:41)
    at 
/Users/sujan/.nvm/versions/node/v9.4.0/lib/node_modules/cordova/node_modules/q/q.js:624:44
    at runSingle 
(/Users/sujan/.nvm/versions/node/v9.4.0/lib/node_modules/cordova/node_modules/q/q.js:137:13)
    at flush 
(/Users/sujan/.nvm/versions/node/v9.4.0/lib/node_modules/cordova/node_modules/q/q.js:125:13)
    at process._tickCallback (internal/process/next_tick.js:150:11)
(node:3439) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This 
error originated either by throwing inside of an async function without a catch 
block, or by rejecting a promise which was not handled with .catch(). 
(rejection id: 1)
(node:3439) [DEP0018] DeprecationWarning: Unhandled promise rejections are 
deprecated. In the future, promise rejections that are not handled will 
terminate the Node.js process with a non-zero exit code.
{code}

When renaming the `ios` folder to `_ios` it all works as expected:

{code}
MacBook-Pro:project sujan$ cordova platform add ios
Using cordova-fetch for cordova-ios@~4.5.4
Adding ios project...
Creating Cordova project for the iOS platform:
        Path: platforms/ios
...
{code}

Is this expected behaviour?



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