Add svelte support to neovim(lsp, ts)

nix/pkgs/home.nix

@@ -119,6 +119,7 @@ in
       bottom
       bc
       cmatrix
+      svelte-language-server
     ];
 
     file = symlinkFiles;

nvim/lsp/svelte-language-server.lua

@@ -0,0 +1,22 @@
+-- Helper function for the 'MigrateToSvelte5' LSP command.
+-- This function will be called by the user command created in on_attach.
+local function migrate_to_svelte_5_command(client)
+    client:exec_param({
+        command = "migrate_to_svelte_5",
+        arguments = { vim.uri_from_bufnr(vim.api.nvim_get_current_buf()) },
+    })
+end
+
+return {
+    cmd = { "svelteserver", "--stdio" },
+
+    filetypes = { "svelte" },
+
+    root_markers = { "package.json", ".git/" },
+    on_attach = function(client, bufnr)
+        local fn = function() migrate_to_svelte_5_command(client) end
+        vim.api.nvim_buf_create_user_command(bufnr, "SvelteMigrateToSvelte5", fn, {
+            desc = "Svelte: Migrate Component to Svelte 5 Syntax (via LSP).",
+        })
+    end,
+}

nvim/lua/plugs/treesitter.lua

@@ -50,6 +50,7 @@ return {
                 "latex",
                 "typst",
                 "ruby",
+                "svelte",
             },
             sync_install = false,
             -- This can be updated to a list of languages instead of defaulting to true