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Container sub-modules

Implement container sub-modules like this:

sub_module = Justdi::SubModule.new do |register|
  register.call(:schema).use_class(Graphql::Schema) 
  register.call(:server).use_class(Graphql::Server)
end

container.import_module(sub_module)

Global container

Think about definition of the global justdi container for the whole ruby application without manual initialisation.

Allow to pass Proc into container initializer with register handler arg

Justdi::Container.new do |register|
   register(:some_token).use_value(42)
end

Self-definition

Think about ways to provide self contained definitions like as it was implemented in Angular.

Concepts

Concept A

class ComponentA
  extend Justdi::Component

  component do |metadata|
     metadata.imports ComponentB
     metadata.store SomeDefinitionStore
     metadata.provider(
       key1: { resolver: ->() { 42 } }, 
       key2: { use_class: Custom }
     )
  end
end

container.import_module ComponentA

Concept B

class ComponentA
  extend Justdi::Component

  component_metadata( # probably another name, idea about the single method
     imports: ComponentB,
     store: SomeDefinitionStore,
     provider: {
       key1: { resolver: ->() { 42 } }, 
       key2: { use_class: Custom }
     }
  )
end

Concept C

class ComponentA
  extend Justdi::Component

  component_imports ComponentB
  component_store SomeDefinitionStore
  component_provider key: { use_class: Custom }
end