fixes eslint config

modules/nvim/config/lua/plugins/none-ls.lua

@@ -5,11 +5,58 @@ return {
   },
   config = function()
     local null_ls = require("null-ls")
+    local utils = require("dnsc.utils")
+
+    local string_starts_with = function(str, start)
+      return string.sub(str, 1, #start) == start
+    end
+
+    local create_runtime_condition = function(config_names)
+      local bufnr_cache = {}
+      local config_path_cache = {}
+
+      return function(params)
+        if bufnr_cache[params.bufnr] ~= nil then
+          return bufnr_cache[params.bufnr]
+        else
+          for _, cached_config_path in ipairs(config_path_cache) do
+            if string_starts_with(params.bufname, cached_config_path) then
+              bufnr_cache[params.bufnr] = true
+              return true
+            end
+          end
+        end
+
+        local config_path = utils.root_pattern(config_names)(params.bufname)
+
+        local has_config = config_path ~= nil
+        if has_config then
+          table.insert(config_path_cache, config_path)
+        end
+        bufnr_cache[params.bufnr] = has_config
+
+        return has_config
+      end
+    end
+
+    local eslint_runtime_condition = create_runtime_condition({
+      ".eslintrc.cjs",
+      ".eslintrc.js",
+      ".eslintrc.json",
+      ".eslintrc.yaml",
+      ".eslintrc.yml",
+      "eslint.config.mjs",
+      "eslint.config.js",
+      "eslint.config.ts",
+      "eslint.config.mts",
+    })
 
     null_ls.setup({
       sources = {
         require("none-ls.code_actions.eslint_d"),
-        require("none-ls.diagnostics.eslint_d"),
+        require("none-ls.diagnostics.eslint_d").with({
+          runtime_condition = eslint_runtime_condition,
+        }),
       },
     })
   end,