What does "default collection in your Angular CLI project" mean?

Question

I installed "@ngrx/schematics" and it asked me -

"Do you want to use @ngrx/schematics as the default collection?"

I am not sure what "default collection" means.

The default value is "Yes". Selecting "Yes" adds this entry to the angular.json file:

"cli": {
    "defaultCollection": "@ngrx/schematics"
  }

I could not find any documentation as to what being a "default collection" exactly means. The ngrx page only mentions the flag as optional -

defaultCollection - Use @ngrx/schematics as the default collection.

and this angular page mentions

The default schematics collection to use.

Follow up question - If I want to remove this change, then what should I do ? Should I just removethe entry from angular.json or replace it with some other value ?

Answer 1

It is for the ng cli tool (ng g) to extend from the base schematics automatically without prepending the package schematics name:

If you specify anything different, like
@angular-eslint/schematics, @ngrx/schematics. It enables command like ng generate to execute package specific command and settings automatically, like ng generate create-effect-migration instead of ng generate @ngrx/schematics:create-effect-migration

It has been replaced by schematicCollection as of writing(a list of default schematics to extend).