[Ionic v4] Uncaught Error: cordova already defined

[peterpeterparker]

Ionic Info
@ionic/angular: "4.0.0-beta.2"

Describe the Bug
When I run my app on a real Android device (Samsung Edge / Android v7) and plug the device with a cable to my laptop, I found the following error in the Chrome Debugger console

Uncaught Error: cordova already defined
    at cordova.24be14f7eb59f2cab434.js:1
    at require (cordova.24be14f7eb59f2cab434.js:1)
    at cordova.24be14f7eb59f2cab434.js:1
    at cordova.24be14f7eb59f2cab434.js:1

Related Code
I double checked, I only have got the following in the <head/> of index.html once

 <script src="cordova.js"></script>

Expected Behavior
No such error

PS

Not sure if it's Ionic related or Ionic-native v5 related, therefore I opened the issue here, hope you don't mind too much

[NisStrom]

Same issue here. If cordova.js is not included in indext.html, then in runs fine with ionic run. When we build the app and create a package for both android and ios the app throws an error, that cordova.js should be included because a native cordova plugin (in our case cordova-plugin-advanced-http) requires it to work.
Now when cordova.js is included in indext.html it works with the packaged builds but fails with ionic run as described by @peterpeterparker

[peterpeterparker]

As described in danielsogl/awesome-cordova-plugins#2067 (comment) I had to remove cordova.js from my index.html because I think that now cordova.js will be added automatically at bundle time

Doing I then see the following warning in the console, not sure if I should ignore it or not (everything is working fine, plugins seems ok):

 Could not find cordova.js script tag. Plugin loading may fail.

P.S.: If I have a look at /platforms/android/app/src/main/assets/www I'll find two cordova*.js file. One cordova.js and one cordova.hash.js and that's that last one which would be automatically added to index.html

P.P.S.: The warning src is findCordovaPath of https://github.com/apache/cordova-android/blob/46a036ef265951d5371936b37d7296fa47fb28ce/bin/templates/project/assets/www/cordova.js and effectively this check assume the script reference doesn't contains any hash

P.P.P.S.: There Ionic ng-toolkit add cordova.js and normalize it https://github.com/ionic-team/ionic-cli/blob/5c6507d2ec8102e623a65fc31b52dc5226d70ea0/packages/%40ionic/ng-toolkit/src/cordova-build/index.ts

[peterpeterparker]

I've tested successfully my app on both (real) iOS and Android. Therefore I close this issue.

cordova.hash.js is added by the Ionic CLI in v4 and therefore no extra reference to cordova.js in index.html should be added manually

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.