Designing AngularJS applications by component centric is good practice rather than designing them by controller centric. If you had developed your application following this practice, then it will be easier for you to migrate. Component Directives in AngularJS will have their template, controller, and binding similar to Angular components. But make sure your AngularJS application Component Directives did not use the attributes such as compile, replace, priority, and terminal. If your application implemented Component Directives with these attributes then it is not liaising with Angular architecture. If your AngularJS application was developed using AngularJS 1.5 and the components are implemented using the component API, then you might have noticed the similarities in Angular components.
Germany
Slovakia
Canada
Brazil
Singapore
Hungary
Philippines
Mexico
Thailand
Ukraine
Luxembourg
Estonia
Lithuania
Norway
Chile
United States
Great Britain
India
Spain
South Korea
Ecuador
Colombia
Taiwan
Switzerland
Indonesia
Cyprus
Denmark
Finland
Poland
Malta
Czechia
New Zealand
Austria
Turkey
France
Sweden
Italy
Egypt
Belgium
Portugal
Slovenia
Ireland
Romania
Greece
Argentina
Malaysia
South Africa
Netherlands
Bulgaria
Latvia
Australia
Japan
Russia