From a0856863c1686f7b2d8ec3bd7c2f0c056dc7b615 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Mizio?= <pawel.mizio@allegro.com>
Date: Tue, 9 Jan 2024 13:38:02 +0100
Subject: [PATCH] fix: `on_attach` called multiple times with
 `separate_diagnostic_server`

---
 lua/typescript-tools/init.lua | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/lua/typescript-tools/init.lua b/lua/typescript-tools/init.lua
index 0b7108af..6558aa47 100644
--- a/lua/typescript-tools/init.lua
+++ b/lua/typescript-tools/init.lua
@@ -44,6 +44,26 @@ function M.setup(config)
     }
   end
 
+  -- INFO: some nasty ifology but it need to be placed somewhere
+  -- I prefer it here than in huge file tsserver.lua
+  -- Rationale: `on_attach` is called based on response from `configure` request and because we
+  -- have two servers nvim get also two responses
+  local on_attach_called = false
+  local config_on_attach = config.on_attach
+
+  local function on_attach(...)
+    if on_attach_called then
+      return
+    end
+
+    on_attach_called = true
+    config_on_attach(...)
+  end
+
+  if config.on_attach then
+    config.on_attach = on_attach
+  end
+
   lspconfig[plugin_config.plugin_name].setup(config)
 end