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piotrmurach/finite_machine

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lib/finite_machine/observer.rb

Summary

Maintainability
A
3 hrs
Test Coverage

Class Observer has 24 methods (exceeds 20 allowed). Consider refactoring.
Open

  class Observer < GenericDSL
    include Safety

    # The current state machine
    attr_reader :machine
Severity: Minor
Found in lib/finite_machine/observer.rb - About 2 hrs to fix

    Method on has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
    Open

        def on(hook_type, state_or_event_name = nil, async = nil, &callback)
      sync_exclusive do
        if state_or_event_name.nil?
          state_or_event_name = HookEvent.any_state_or_event(hook_type)
        end
    Severity: Minor
    Found in lib/finite_machine/observer.rb - About 25 mins to fix

    Cognitive Complexity

    Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

    A method's cognitive complexity is based on a few simple rules:

    • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
    • Code is considered more complex for each "break in the linear flow of the code"
    • Code is considered more complex when "flow breaking structures are nested"

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