lsp/presets/svelte-language-server: init

modules/plugins/lsp/presets/default.nix

@@ -3,6 +3,7 @@
     ./deno.nix
     ./harper.nix
     ./lemminx.nix
+    ./svelte-language-server.nix
     ./tailwindcss-language-server.nix
     ./taplo.nix
     ./terraform-ls.nix

modules/plugins/lsp/presets/svelte-language-server.nix

@@ -0,0 +1,53 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  inherit (lib.meta) getExe;
+  inherit (lib.modules) mkIf;
+  inherit (lib.options) mkEnableOption;
+  inherit (lib.generators) mkLuaInline;
+
+  cfg = config.vim.lsp.presets.svelte-language-server;
+in {
+  options.vim.lsp.presets.svelte-language-server = {
+    enable = mkEnableOption "the Svelete Language Server";
+  };
+
+  config = mkIf cfg.enable {
+    vim.lsp.servers.svelte-language-server = {
+      enable = true;
+      cmd = [(getExe pkgs.svelte-language-server) "--stdio"];
+      root_dir = mkLuaInline ''
+        function(bufnr, on_dir)
+          local root_files = { 'package.json', '.git' }
+          local fname = vim.api.nvim_buf_get_name(bufnr)
+          -- Svelte LSP only supports file:// schema. https://github.com/sveltejs/language-tools/issues/2777
+          if vim.uv.fs_stat(fname) ~= nil then
+            on_dir(vim.fs.dirname(vim.fs.find(root_files, { path = fname, upward = true })[1]))
+          end
+        end
+      '';
+      on_attach = mkLuaInline ''
+        function(client, bufnr)
+          vim.api.nvim_create_autocmd('BufWritePost', {
+            pattern = { '*.js', '*.ts' },
+            group = vim.api.nvim_create_augroup('svelte_js_ts_file_watch', {}),
+            callback = function(ctx)
+              -- internal API to sync changes that have not yet been saved to the file system
+              client:notify('$/onDidChangeTsOrJsFile', { uri = ctx.match })
+            end,
+          })
+
+          vim.api.nvim_buf_create_user_command(bufnr, 'LspMigrateToSvelte5', function()
+            client:exec_cmd({
+              command = 'migrate_to_svelte_5',
+              arguments = { vim.uri_from_bufnr(bufnr) },
+            })
+          end, { desc = 'Migrate Component to Svelte 5 Syntax' })
+        end
+      '';
+    };
+  };
+}