refactor: rename "server_configurations" => "configs" #3330

Problem:
The name `server_configurations` is extremely verbose and irritatingly
formal and dogmatic. This overlong name is a constant nuisance when
reading, writing, and coding.

It's also not even correct: these configurations are just as much
"client" configurations as they are "server" configurations.

Solution:
- Rename to a shorter name.
- Leave placeholder files for any old URLs that link to the old
  location.

1 files changed, 40 insertions, 0 deletions

diff --git a/lua/lspconfig/configs/elmls.lua b/lua/lspconfig/configs/elmls.lua
new file mode 100644
index 00000000..e3e63bcd
--- /dev/null
+++ b/lua/lspconfig/configs/elmls.lua
@@ -0,0 +1,40 @@
+local util = require 'lspconfig.util'
+local api = vim.api
+
+local elm_root_pattern = util.root_pattern 'elm.json'
+
+return {
+  default_config = {
+    cmd = { 'elm-language-server' },
+    -- TODO(ashkan) if we comment this out, it will allow elmls to operate on elm.json. It seems like it could do that, but no other editor allows it right now.
+    filetypes = { 'elm' },
+    root_dir = function(fname)
+      local filetype = api.nvim_buf_get_option(0, 'filetype')
+      if filetype == 'elm' or (filetype == 'json' and fname:match 'elm%.json$') then
+        return elm_root_pattern(fname)
+      end
+    end,
+    init_options = {
+      elmReviewDiagnostics = 'off', -- 'off' | 'warning' | 'error'
+      skipInstallPackageConfirmation = false,
+      disableElmLSDiagnostics = false,
+      onlyUpdateDiagnosticsOnSave = false,
+    },
+    capabilities = {
+      offsetEncoding = { 'utf-8', 'utf-16' },
+    },
+  },
+  docs = {
+    description = [[
+https://github.com/elm-tooling/elm-language-server#installation
+
+If you don't want to use Nvim to install it, then you can use:
+```sh
+npm install -g elm elm-test elm-format @elm-tooling/elm-language-server
+```
+]],
+    default_config = {
+      root_dir = [[root_pattern("elm.json")]],
+    },
+  },
+}