(nvim) add variable support for linting

nvim/lua/juancwu/plugins/nvim-lint.lua

@@ -1,39 +1,90 @@
 local linters_by_ft = {
-	javascript = { "biomejs" },
-	typescript = { "biomejs" },
-	javascriptreact = { "biomejs" },
-	typescriptreact = { "biomejs" },
+	javascript = { "biomejs", "eslint" },
+	typescript = { "biomejs", "eslint" },
+	javascriptreact = { "biomejs", "eslint" },
+	typescriptreact = { "biomejs", "eslint" },
 	jsonc = { "biomejs" },
 	json = { "biomejs" },
 	css = { "biomejs" },
 }
 
+-- Function to find the first config file by walking up the directory tree
+local function find_first_config()
+	local current_dir = vim.fn.expand("%:p:h")
+	local home_dir = vim.fn.expand("$HOME")
+
+	local config_files = {
+		biomejs = { "biome.json" },
+		eslint = { ".eslintrc", ".eslintrc.js", ".eslintrc.json", ".eslintrc.yml" },
+	}
+
+	while current_dir ~= home_dir and current_dir ~= "/" do
+		for linter, patterns in pairs(config_files) do
+			for _, pattern in ipairs(patterns) do
+				local config_file = current_dir .. "/" .. pattern
+				if vim.fn.filereadable(config_file) == 1 then
+					return linter
+				end
+			end
+		end
+		current_dir = vim.fn.fnamemodify(current_dir, ":h")
+	end
+	return nil
+end
+
+-- Function to determine the linter based on config files and file type
+local function get_linter()
+	local filetype = vim.bo.filetype
+	local available_linters = linters_by_ft[filetype] or {}
+	local linter = find_first_config()
+
+	if linter then
+		if vim.tbl_contains(available_linters, linter) then
+			vim.g.current_linter = linter
+			return linter
+		end
+	end
+
+	return nil
+end
+
+local function lint()
+	local nvimlint = require("lint")
+	local linter = get_linter()
+	if linter ~= nil then
+		nvimlint.try_lint(linter)
+	else
+		print("No linter found for filetype: " .. vim.bo.filetype)
+	end
+end
+
 return {
 	"mfussenegger/nvim-lint",
-	event = { "BufWritePost" },
 	keys = {
 		{
 			"<leader>lf",
 			function()
-				require("lint").try_lint()
+				lint()
 			end,
 			mode = "n",
 			desc = "[L]int [F]ile",
 		},
 	},
 	config = function()
-		local lint = require("lint")
-
-		lint.linters_by_ft = linters_by_ft
-
 		vim.api.nvim_create_autocmd({ "BufWritePost" }, {
 			callback = function()
-				lint.try_lint()
+				lint()
 			end,
 		})
 
 		vim.api.nvim_create_user_command("Lint", function()
-			lint.try_lint()
+			lint()
 		end, { desc = "Lint file" })
+
+		vim.api.nvim_create_user_command("LintInfo", function()
+			print("Current linter: " .. (vim.g.current_linter or "none"))
+		end, {
+			desc = "Show current linter being used",
+		})
 	end,
 }