class Opal::Rewriters::ForRewriter

def on_for(node)
  loop_variable, loop_range, loop_body = *node
  # Declare local variables used in the loop and the loop body at the outer scope
  outer_assignments = generate_outer_assignments(loop_variable, loop_body)
  # Generate temporary loop variable
  tmp_loop_variable = self.class.next_tmp
  get_tmp_loop_variable = s(:js_tmp, tmp_loop_variable)
  # Assign the loop variables in the loop body
  loop_body = prepend_to_body(loop_body, assign_loop_variable(loop_variable, get_tmp_loop_variable))
  # Transform the for-loop into each-loop with updated loop body
  node = transform_for_to_each_loop(node, loop_range, tmp_loop_variable, loop_body)
  node.updated(:begin, [*outer_assignments, node])
end