AngularJS & Angular to co-exists without upgrading angularjs code

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I’ve a single AngularJS application with various controllers/views/services and directives. I wish to move to angular and typescript without modifying the existing code. Is it possible to do this? I’ve seen various samples and forums where they convert existing directives/controllers to a component. Since my application is huge doing this would be a mammoth effort for us.

My question is different than other questions on StackOverflow because I don’t want to modify my existing codebase but want both the code styles of Angular and AngularJS code to co-exists.