class RuboCop::Cop::Style::EmptyHeredoc

Checks for using empty heredoc to reduce redundancy.

@example

# bad
<<~EOS
EOS

<<-EOS
EOS

<<EOS
EOS

# good
''

# bad
do_something(<<~EOS)
EOS

do_something(<<-EOS)
EOS

do_something(<<EOS)
EOS

# good
do_something('')