CODEWITHSUNDEEP
node.jserror-handling
Molarro
Molarro

Reputation: 1047

How to get line and file name from Error in Node.js?

Suppose I have: 

var err = new Error('My error!');

How to get line and file name, where Error was created? Like in PHP:

$ex = new \Exception();
$ex->getLine();
$ex->getFile();

Upvotes: 1

Views: 5215

Answers (2)

chetan dev
chetan dev

Reputation: 621

You can use stack-trace node module. This gives module name and line number

Upvotes: 3

arboreal84
arboreal84

Reputation: 2154

To get the file name for the current file: use __filename.

To get the folder for the current file: use __dirname

To parse the file from an Error object, you need an Error with a stack property, that hopefully points to files. You would need then to parse the filename and line from the stack string or use a module that does so.

> new Error().stack
Error
    at repl:1:1
    at sigintHandlersWrap (vm.js:22:35)
    at sigintHandlersWrap (vm.js:73:12)
    at ContextifyScript.Script.runInThisContext (vm.js:21:12)
    at REPLServer.defaultEval (repl.js:346:29)
    at bound (domain.js:280:14)
    at REPLServer.runBound [as eval] (domain.js:293:12)
    at REPLServer.<anonymous> (repl.js:545:10)
    at emitOne (events.js:101:20)
    at REPLServer.emit (events.js:188:7)

Upvotes: 1

Related Questions