From 39835baf8410b869a527fcf27bee33b38ceec977 Mon Sep 17 00:00:00 2001
From: Micah Halter <micah@mehalter.com>
Date: Sun, 11 Jun 2023 16:41:58 -0400
Subject: [PATCH] fix(typescript): improve eslint and prettier loading (#231)

Co-authored-by: Uzair Aftab <uzaaft@outlook.com>
---
 .../pack/typescript/typescript.lua            | 61 ++++++++++++++-----
 1 file changed, 47 insertions(+), 14 deletions(-)

diff --git a/lua/astrocommunity/pack/typescript/typescript.lua b/lua/astrocommunity/pack/typescript/typescript.lua
index 2c13825cb..a000db78a 100644
--- a/lua/astrocommunity/pack/typescript/typescript.lua
+++ b/lua/astrocommunity/pack/typescript/typescript.lua
@@ -15,6 +15,27 @@ local function on_file_remove(args)
   end
 end
 
+local function check_json_key_exists(filename, key)
+  -- Open the file in read mode
+  local file = io.open(filename, "r")
+  if not file then
+    return false -- File doesn't exist or cannot be opened
+  end
+
+  -- Read the contents of the file
+  local content = file:read "*all"
+  file:close()
+
+  -- Parse the JSON content
+  local json = vim.fn.json_decode(content)
+  if type(json) ~= "table" then
+    return false -- Invalid JSON format
+  end
+
+  -- Check if the key exists in the JSON object
+  return json[key] ~= nil
+end
+
 return {
   { import = "astrocommunity.pack.json" },
   {
@@ -31,31 +52,43 @@ return {
   },
   {
     "jay-babu/mason-null-ls.nvim",
+
     opts = function(_, opts)
       opts.ensure_installed = utils.list_insert_unique(opts.ensure_installed, { "prettierd", "eslint_d" })
-
       if not opts.handlers then opts.handlers = {} end
 
+      local has_prettier = function(util)
+        return check_json_key_exists(vim.fn.getcwd() .. "/package.json", "prettier")
+          or util.root_has_file ".prettierrc"
+          or util.root_has_file ".prettierrc.json"
+          or util.root_has_file ".prettierrc.yml"
+          or util.root_has_file ".prettierrc.yaml"
+          or util.root_has_file ".prettierrc.json5"
+          or util.root_has_file ".prettierrc.js"
+          or util.root_has_file ".prettierrc.cjs"
+          or util.root_has_file "prettierrc.config.js"
+          or util.root_has_file "prettierrc.config.cjs"
+          or util.root_has_file ".prettierrc.toml"
+      end
+
+      local has_eslint = function(util)
+        return util.root_has_file ".eslintrc.js"
+          or util.root_has_file ".eslintrc.cjs"
+          or util.root_has_file ".eslintrc.yaml"
+          or util.root_has_file ".eslintrc.yml"
+          or util.root_has_file ".eslintrc.json"
+          or check_json_key_exists(vim.fn.getcwd() .. "/package.json", "eslintConfig")
+      end
+
       opts.handlers.prettierd = function()
         local null_ls = require "null-ls"
-        null_ls.register(null_ls.builtins.formatting.prettierd.with {
-          condition = function(util)
-            return util.root_has_file "package.json"
-              or util.root_has_file ".prettierrc"
-              or util.root_has_file ".prettierrc.json"
-              or util.root_has_file ".prettierrc.js"
-          end,
-        })
+        null_ls.register(null_ls.builtins.formatting.prettierd.with { condition = has_prettier })
       end
 
       opts.handlers.eslint_d = function()
         local null_ls = require "null-ls"
         null_ls.register(null_ls.builtins.diagnostics.eslint_d.with {
-          condition = function(util)
-            return util.root_has_file "package.json"
-              or util.root_has_file ".eslintrc.json"
-              or util.root_has_file ".eslintrc.js"
-          end,
+          condition = function(util) return (has_eslint(util) or not has_prettier(util)) end,
         })
       end
     end,