Nvim-tree.lua: Blank on Nvim NvimTreeToggle

[saifulapm]

Hello, Suddenly when I toggle nvim tree, there is no files. When I refresh, all files showing. It was perfect before. I don't what happen. Any Idea ?

Please check this image. When toggle 2 time, Files is back. I use lazy load feature of Packer.

Any Idea ?

Thanks

[kabouzeid]

Same here when I open with nvim +NvimTreeToggle. Refreshing the tree does work, but it's annoying :/

[shadow-asd]

same

[saifulapm]

I think recently Nvim Tree added lsp diagnostic feature. After this update, Lazy loading not working. I solved this by remove lazy loading for Nvim Tree.

[liubang]

same

[kabouzeid]

How can I disable lazy loading?

[saifulapm]

Are you using Packer ?

[kabouzeid]

No, Plug. And I'm not lazy loading via plugin manager. I use nvim +NvimTreeToggle to execute the command immediately on start

[sindrets]

This happens because initialization is deferred, and so it is not always done after VimEnter.

@kabouzeid If you always want to open nvim-tree when launching nvim you should set

let g:nvim_tree_auto_open = 1 " will open the tree when the package is loaded.

If you only use that command sometimes, you should change it to: nvim -c 'let g:nvim_tree_auto_open=1'.

But I also think it would be a good idea to have some sort of callback when the plugin has finished loading. @kyazdani42 maybe we could add something like a ready event in the new event handler?

[kabouzeid]

Thanks, I must've overlooked that option :)

[kyazdani42]

@sindrets this is a good idea, i guess we could provide this so nvim-tree.toggle is always called when setup is finished. I removed the asynchronous initialization so it might be quite easy to do (but this is also the reason why the lazy loading is not working properly anymore).

[folke]

Adding the following inside the config function for Packer use seems to work:

require"nvim-tree".on_enter()

[kyazdani42]

refer to the on_ready event if you use lazy loading ! closing this :)

[akinsho]

@kyazdani42 how does one use the on_ready event for lazy loading. I read through the docs and tried to see where I'd implement it but I'm not sure how it should work? The on_enter command posted above works fine for me (note to anyone reading this you should add your config opts before you call that function), just wondering if there is a better more official way.

EDIT: a bit more context, I use packer and have it specified as

    use {
      "kyazdani42/nvim-tree.lua",
      keys = {"<c-n>"},
      cmd = {"NvimTreeToggle", "NvimTreeOpen"},
      config = conf("nvim-tree"),
      requires = "nvim-web-devicons"
    }

Not sure where on_ready would fit in

[sindrets]

@akinsho I think something like this would work for lazy loading:

require'nvim-tree.events'.on_nvim_tree_ready(function ()
  vim.cmd("NvimTreeRefresh")
end)

[kyazdani42]

@akinsho you need to pass opt = true in order to lazy load the plugin in packer though.
but yes @sindrets is right

[akinsho]

Thanks both 👍🏿 guess there's a preference issue here as on_enter will block till the tree is loaded and on_ready is async but has an empty tree for a second or less (more of a random observation than anything else since both work).

PS: re. packer you don't actually need to specify opt if any of the keys you are using imply lazy loading e.g. cmd, keys and a few more all imply lazy loading so packer will make them opt without specifying

[kyazdani42]

good to know !