revert a3c2ddbf9e

revert implement proper error handling

build.lua

@@ -15,10 +15,7 @@ end
 
 local function runCommand(cmd)
 	print("> " .. cmd)
-	local result = os.execute(cmd)
-	if result ~= true then
-		os.exit(1)
-	end
+	return os.execute(cmd)
 end
 
 local function fixPath(path)
@@ -61,7 +58,6 @@ if not needsDir then
 end
 
 local files = {
-	'src/error.c',
 	'src/helper.c',
 	'src/lexer.c',
 	'src/parser.c',