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Dependency Resolution - Coggle Diagram

- - - - Resolve it against the Module Injector and its parents
        
        Example
        
        Eagerly Loading Component
        
        Angular Search provider/service/dependency in Current Component. If not found move upwards to its parents if not found there then move one step up to its grandparents
        
        search starts at the Injector associated with the component in the Element Injector tree
        
        It uses the token to search for dependency(Service) in its Providers array
        
        2 more items...
        
        Lazy Loading Component
        
        For components from the lazy loaded modules, the resolutions start from the Module Injector associated with Lazy Loaded Module
        
        Self
        
        decorator instructs Angular to look for the dependency only in the local injector
        
        local injector is the injector that is part of the current component or directive
        
        SkipSelf
        
        decorator instructs Angular to look for the dependency in the Parent Injector and upwards
        
        It tells Angular not to look for the injector in the local injector, but start from the Parent
        
        you can opposite of the Self
        
        Optional
        
        Optional marks the dependency as Optional. If the dependency is not found, then it returns null instead of throwing an error text
        
        You will instantly receive the error “No provider for RandomService found in NodeInjector“
        
        Add the Optional decorator along with the Self. Now, the dependency injection will return null instead of an error.