Ordering of Angular component class members.

angular-member-ordering.md

Ordering of Angular component class members

Use the following order of groups to organize Angular components:

1. Private properties.
2. Data binding properties.
3. View and content properties.
4. UI properties.
5. Component API properties.
6. Constructor.
7. Lifecycle hooks.
8. Event handlers.
9. Component API methods.
10. Private methods.

Group	Description
Component API methods	Public methods intended to be used by other components, directives, or services.
Component API properties	Public properties intended to be used by other components, directives, or services.
Data binding properties	Properties decorated by Input or Output.
Event handlers.	Methods used by the component template.
Lifecycle hooks	Methods implementing the AfterContentChecked, AfterContentInit, AfterViewChecked, AfterViewInit, DoCheck OnChanges, OnDestroy, or OnInit interfaces.
Private properties	Properties marked by private or #.
UI properties	Public properties used by the component template.
View and content properties	Properties decorated by ContentChild, ContentChildren, ViewChild, or ViewChildren.