fix(tsserver-deprecation): use ts_ls where tsserver is being used in lspconfig

[nitishlobo]

This PR addresses the following error when opening nvim:
"tsserver is deprecated, use ts_ls instead. Feature will be removed in lspconfig 0.2.0"

The issue was raised here:
#88

The solution was given here:
neovim/nvim-lspconfig#3232 (comment)

Note that you may need to do a reload of the related plugins:
:Lazy reload mason.nvim mason-lspconfig.nvim mason-tool-installer.nvim

[nitishlobo]

@josean-dev @RigottiG @MarkCodesTheWeb @aspehler @kannicht @pieterjan84 @santiagohervella @s4Dt0y
Please review.

[Mccranky83]

If the problem resides in the fact that lspconfig renamed tsserver to ts_ls while no package under the name ts_ls is available in mason yet, why not just change the following section of the config instead?

-- default handler for installed servers
function(server_name)
  lspconfig[server_name].setup({
    capabilities = capabilities,
  })
end,
-- mason still installs `tsserver`
["tsserver"] = function()
  -- lspconfig sees `ts_ls`
  lspconfig["ts_ls"].setup({
    capabilities = capabilities,
    ...
end,

The result of :checkhealth run seems to confirm that this works:

vim.lsp: require("vim.lsp.health").check()

- LSP log level : WARN
- Log path: /Users/Mccranky/.local/state/nvim/lsp.log
- Log size: 9460 KB

vim.lsp: Active Clients ~
- ts_ls (id: 1)
    Root directory: nil
    Command: /Users/Mccranky/.local/share/nvim/mason/bin/typescript-language-server --stdio
    Settings: vim.empty_dict()
    Attached buffers: 1
- emmet_ls (id: 2)
    Root directory: nil
    Command: /Users/Mccranky/.local/share/nvim/mason/bin/emmet-ls --stdio
    Settings: vim.empty_dict()
    Attached buffers: 1
- copilot (id: 3)
    Command: node /Users/Mccranky/.local/share/nvim/lazy/copilot.lua/copilot/index.js
    Settings: {
      advanced = {
        inlineSuggestCount = 3,
        listCount = 10
      }
    }
    Attached buffers: 1, 6

[isandesh7]

I tested the change. I'm still getting ERROR -

1. Pasted the contents of the modified file as is.
2. Ran the provided reload command
3. Restarted nvim
4. Observed same issue.

[mason-lspconfig.nvim] Server "tsserver" is not a valid entry in ensure_installed. Make sure to only p
rovide lspconfig server names.

dev-environment-files/.config/nvim/lua/josean/plugins/lsp/mason.lua

Line 30 in cb670e8

"tsserver",

changing this to
ts_ls worked.

[Mccranky83]

I tested the change. I'm still getting ERROR -

1. Pasted the contents of the modified file as is.
2. Ran the provided reload command
3. Restarted nvim
4. Observed same issue.

[mason-lspconfig.nvim] Server "tsserver" is not a valid entry in ensure_installed. Make sure to only p
rovide lspconfig server names.

dev-environment-files/.config/nvim/lua/josean/plugins/lsp/mason.lua

Line 30 in cb670e8

"tsserver",

changing this to
ts_ls worked.

Yes, just found out that mason has also renamed tsserver to ts_ls, so it's easy to use telescope to find and replace every tsserver with ts_ls.