class RuboCop::Cop::RSpec::LetBeforeExamples

end
expect(some).to be
it ‘checks what some does’ do
end
expect(foo).to be
it ‘checks what foo does’ do
let(:some) { other }
let(:foo) { bar }
# Good
end
expect(some).to be
it ‘checks what some does’ do
let(:some) { other }
end
expect(foo).to be
it ‘checks what foo does’ do
let(:foo) { bar }
# Bad
@example
Checks for ‘let` definitions that come after an example.

def autocorrect(corrector, node, first_example) 

def autocorrect(corrector, node, first_example)
  RuboCop::RSpec::Corrector::MoveNode.new(
    node, corrector, processed_source
  ).move_before(first_example)
end

def check_let_declarations(node) 

def check_let_declarations(node)
  first_example = find_first_example(node)
  return unless first_example
  node.each_child_node do |child|
    next if child.sibling_index < first_example.sibling_index
    next unless let?(child)
    add_offense(child) do |corrector|
      autocorrect(corrector, child, first_example)
    end
  end
end

def find_first_example(node) 

def find_first_example(node)
  node.children.find { |sibling| example_or_group?(sibling) }
end

def multiline_block?(block) 

def multiline_block?(block)
  block.begin_type?
end

def on_block(node) 

def on_block(node)
  return unless example_group_with_body?(node)
  check_let_declarations(node.body) if multiline_block?(node.body)
end