local neotree = require 'neo-tree'
neotree.setup({
    event_handlers = {
        {
            event = "file_opened",
            handler = function(file_path)
                -- auto close
                require("neo-tree.command").execute({action = "close"})
            end
        },
    }
})
vim.api.nvim_set_keymap('n', '<leader>fm',
':Neotree toggle<CR>',
{ table.unpack(opts), desc = 'Toggle NeoTree' }
)