feat: simplify utils/dap.lua

lua/modules/utils/dap.lua

@@ -1,26 +1,28 @@
 local M = {}
 
 function M.input_args()
-	return function()
-		local argument_string = vim.fn.input("Program arg(s) (enter nothing to leave it null): ")
-		return vim.fn.split(argument_string, " ", true)
-	end
+	local argument_string = vim.fn.input("Program arg(s) (enter nothing to leave it null): ")
+	return vim.fn.split(argument_string, " ", true)
 end
 
 function M.input_exec_path()
-	return function()
-		return vim.fn.input('Path to executable (default to "progout"): ', vim.fn.getcwd() .. "/progout", "file")
-	end
+	return vim.fn.input('Path to executable (default to "progout"): ', vim.fn.getcwd() .. "/progout", "file")
 end
 
 function M.get_env()
-	return function()
-		local variables = {}
-		for k, v in pairs(vim.fn.environ()) do
-			table.insert(variables, string.format("%s=%s", k, v))
-		end
-		return variables
+	local variables = {}
+	for k, v in pairs(vim.fn.environ()) do
+		table.insert(variables, string.format("%s=%s", k, v))
 	end
+	return variables
 end
 
-return M
+return setmetatable({}, {
+	__index = function(_, key)
+		return function()
+			return function()
+				return M[key]()
+			end
+		end
+	end,
+})