language/ts: migrate to vim.lsp.servers

modules/plugins/languages/ts.nix

@@ -4,73 +4,177 @@
   lib,
   ...
 }: let
-  inherit (builtins) attrNames;
+  inherit (builtins) attrNames elem;
   inherit (lib.options) mkEnableOption mkOption;
   inherit (lib.modules) mkIf mkMerge;
-  inherit (lib.lists) isList;
   inherit (lib.meta) getExe;
-  inherit (lib.types) enum either listOf package str bool;
+  inherit (lib.types) enum listOf package bool;
-  inherit (lib.nvim.lua) expToLua toLuaObject;
+  inherit (lib.generators) mkLuaInline;
+  inherit (lib.nvim.attrsets) mapListToAttrs;
+  inherit (lib.nvim.lua) toLuaObject;
   inherit (lib.nvim.types) mkGrammarOption diagnostics mkPluginSetupOption;
-  inherit (lib.nvim.dag) entryAnywhere;
+  inherit (lib.nvim.dag) entryAnywhere entryBefore;
 
   cfg = config.vim.languages.ts;
 
-  defaultServer = "ts_ls";
+  defaultServers = ["ts_ls"];
-  servers = {
+  servers = let
     ts_ls = {
-      package = pkgs.typescript-language-server;
+      cmd = [(getExe pkgs.typescript-language-server) "--stdio"];
-      lspConfig = ''
+      init_options = {hostInfo = "neovim";};
-        lspconfig.ts_ls.setup {
+      filetypes = [
-          capabilities = capabilities,
+        "javascript"
-          on_attach = function(client, bufnr)
+        "javascriptreact"
-            attach_keymaps(client, bufnr);
+        "javascript.jsx"
-            client.server_capabilities.documentFormattingProvider = false;
+        "typescript"
-          end,
+        "typescriptreact"
-          cmd = ${
+        "typescript.tsx"
-          if isList cfg.lsp.package
+      ];
-          then expToLua cfg.lsp.package
+      root_markers = ["tsconfig.json" "jsconfig.json" "package.json" ".git"];
-          else ''{"${cfg.lsp.package}/bin/typescript-language-server", "--stdio"}''
+      handlers = {
-        }
+        # handle rename request for certain code actions like extracting functions / types
-        }
+        "_typescript.rename" = mkLuaInline ''
+          function(_, result, ctx)
+            local client = assert(vim.lsp.get_client_by_id(ctx.client_id))
+            vim.lsp.util.show_document({
+              uri = result.textDocument.uri,
+              range = {
+                start = result.position,
+                ['end'] = result.position,
+              },
+            }, client.offset_encoding)
+            vim.lsp.buf.rename()
+            return vim.NIL
+          end
         '';
       };
+      on_attach = mkLuaInline ''
+        function(client, bufnr)
+          default_on_attach(client, bufnr);
 
-    denols = {
+          -- ts_ls provides `source.*` code actions that apply to the whole file. These only appear in
-      package = pkgs.deno;
+          -- `vim.lsp.buf.code_action()` if specified in `context.only`.
-      lspConfig = ''
+          vim.api.nvim_buf_create_user_command(0, 'LspTypescriptSourceAction', function()
-        vim.g.markdown_fenced_languages = { "ts=typescript" }
+            local source_actions = vim.tbl_filter(function(action)
-        lspconfig.denols.setup {
+              return vim.startswith(action, 'source.')
-          capabilities = capabilities;
+            end, client.server_capabilities.codeActionProvider.codeActionKinds)
-          on_attach = attach_keymaps,
+
-          cmd = ${
+            vim.lsp.buf.code_action({
-          if isList cfg.lsp.package
+              context = {
-          then expToLua cfg.lsp.package
+                only = source_actions,
-          else ''{"${cfg.lsp.package}/bin/deno", "lsp"}''
+              },
-        }
+            })
-        }
+          end, {})
+        end
       '';
     };
-
+  in {
+    inherit ts_ls;
     # Here for backwards compatibility. Still consider tsserver a valid
     # configuration in the enum, but assert if it's set to *properly*
     # redirect the user to the correct server.
-    tsserver = {
+    tsserver = ts_ls;
-      package = pkgs.typescript-language-server;
+
-      lspConfig = ''
+    denols = {
-        lspconfig.ts_ls.setup {
+      cmd = [(getExe pkgs.deno) "lsp"];
-          capabilities = capabilities;
+      cmd_env = {NO_COLOR = true;};
-          on_attach = attach_keymaps,
+      filetypes = [
-          cmd = ${
+        "javascript"
-          if isList cfg.lsp.package
+        "javascriptreact"
-          then expToLua cfg.lsp.package
+        "javascript.jsx"
-          else ''{"${cfg.lsp.package}/bin/typescript-language-server", "--stdio"}''
+        "typescript"
-        }
+        "typescriptreact"
-        }
+        "typescript.tsx"
+      ];
+      root_markers = ["deno.json" "deno.jsonc" ".git"];
+      settings = {
+        deno = {
+          enable = true;
+          suggest = {
+            imports = {
+              hosts = {
+                "https://deno.land" = true;
+              };
+            };
+          };
+        };
+      };
+      handlers = {
+        "textDocument/definition" = mkLuaInline "nvf_denols_handler";
+        "textDocument/typeDefinition" = mkLuaInline "nvf_denols_handler";
+        "textDocument/references" = mkLuaInline "nvf_denols_handler";
+      };
+      on_attach = mkLuaInline ''
+        function(client, bufnr)
+          default_on_attach(client, bufnr)
+          vim.api.nvim_buf_create_user_command(0, 'LspDenolsCache', function()
+            client:exec_cmd({
+              command = 'deno.cache',
+              arguments = { {}, vim.uri_from_bufnr(bufnr) },
+            }, { bufnr = bufnr }, function(err, _result, ctx)
+              if err then
+                local uri = ctx.params.arguments[2]
+                vim.api.nvim_err_writeln('cache command failed for ' .. vim.uri_to_fname(uri))
+              end
+            end)
+          end, {
+            desc = 'Cache a module and all of its dependencies.',
+          })
+        end
       '';
     };
   };
 
+  denols_handlers = ''
+    local function nvf_denols_virtual_text_document_handler(uri, res, client)
+      if not res then
+        return nil
+      end
+
+      local lines = vim.split(res.result, '\n')
+      local bufnr = vim.uri_to_bufnr(uri)
+
+      local current_buf = vim.api.nvim_buf_get_lines(bufnr, 0, -1, false)
+      if #current_buf ~= 0 then
+        return nil
+      end
+
+      vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, lines)
+      vim.api.nvim_set_option_value('readonly', true, { buf = bufnr })
+      vim.api.nvim_set_option_value('modified', false, { buf = bufnr })
+      vim.api.nvim_set_option_value('modifiable', false, { buf = bufnr })
+      vim.lsp.buf_attach_client(bufnr, client.id)
+    end
+
+    local function nvf_denols_virtual_text_document(uri, client)
+      local params = {
+        textDocument = {
+          uri = uri,
+        },
+      }
+      local result = client.request_sync('deno/virtualTextDocument', params)
+      nvf_denols_virtual_text_document_handler(uri, result, client)
+    end
+
+    local function nvf_denols_handler(err, result, ctx, config)
+      if not result or vim.tbl_isempty(result) then
+        return nil
+      end
+
+      local client = vim.lsp.get_client_by_id(ctx.client_id)
+      for _, res in pairs(result) do
+        local uri = res.uri or res.targetUri
+        if uri:match '^deno:' then
+          nvf_denols_virtual_text_document(uri, client)
+          res['uri'] = uri
+          res['targetUri'] = uri
+        end
+      end
+
+      vim.lsp.handlers[ctx.method](err, result, ctx, config)
+    end
+  '';
+
   # TODO: specify packages
   defaultFormat = "prettier";
   formats = {
@@ -122,17 +226,10 @@ in {
     lsp = {
       enable = mkEnableOption "Typescript/Javascript LSP support" // {default = config.vim.lsp.enable;};
 
-      server = mkOption {
+      servers = mkOption {
+        type = singleOrListOf (enum (attrNames servers));
+        default = defaultServers;
         description = "Typescript/Javascript LSP server to use";
-        type = enum (attrNames servers);
-        default = defaultServer;
-      };
-
-      package = mkOption {
-        description = "Typescript/Javascript LSP server package, or the command to run as a list of strings";
-        example = ''[lib.getExe pkgs.jdt-language-server "-data" "~/.cache/jdtls/workspace"]'';
-        type = either package (listOf str);
-        default = servers.${cfg.lsp.server}.package;
       };
     };
 
@@ -190,8 +287,17 @@ in {
     })
 
     (mkIf cfg.lsp.enable {
-      vim.lsp.lspconfig.enable = true;
+      vim.lsp.servers =
-      vim.lsp.lspconfig.sources.ts-lsp = servers.${cfg.lsp.server}.lspConfig;
+        mapListToAttrs (name: {
+          inherit name;
+          value = servers.${name};
+        })
+        cfg.lsp.servers;
+    })
+
+    (mkIf (cfg.lsp.enable && elem "denols" cfg.lsp.servers) {
+      vim.globals.markdown_fenced_languages = ["ts=typescript"];
+      vim.luaConfigRC.denols_handlers = entryBefore ["lsp-servers"] denols_handlers;
     })
 
     (mkIf cfg.format.enable {
@@ -234,7 +340,7 @@ in {
     {
       assertions = [
         {
-          assertion = cfg.lsp.enable -> cfg.lsp.server != "tsserver";
+          assertion = cfg.lsp.enable -> !(elem "tsserver" cfg.lsp.servers);
           message = ''
             As of a recent lspconfig update, the `tsserver` configuration has been renamed
             to `ts_ls` to match upstream behaviour of `lspconfig`, and the name `tsserver`