local status_ok, comment = pcall(require, 'Comment')
if not status_ok then
    return
end

comment.setup {
    pre_hook = function(ctx)
        local U = require 'Comment.utils'

        local location = nil
        if ctx.ctype == U.ctype.block then
            location = require('ts_context_commentstring.utils').get_cursor_location()
        elseif ctx.cmotion == U.cmotion.v or ctx.cmotion == U.cmotion.V then
            location = require('ts_context_commentstring.utils').get_visual_start_location()
        end

        return require('ts_context_commentstring.internal').calculate_commentstring {
            key = ctx.ctype == U.ctype.line and '__default' or '__multiline',
            location = location,
        }
    end,
}