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An asynchronous domain-based exception handler with long stack traces for node.js
JavaScript

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README.md

trycatch

An asynchronous try catch exception handler with long stack traces for node.js

Now PRODUCTION Ready!

With the update to 0.1.0, stack traces are now lazy, and all try/catch blocks conform to V8 best practices.

Install

npm install trycatch

Use

Because trycatch shims all native I/O calls, it must be required before any other modules.

var trycatch = require('trycatch')
trycatch(fnTry, fnCatch)

Basic Example

    var trycatch = require("trycatch"),
      _ = require('underscore')._

    trycatch(function() {
      _.map(['Error 1', 'Error 2'], function foo(v) {
        setTimeout(function() {
          throw new Error(v)
        }, 10)
      })
    }, function(err) {
      console.log("Async error caught!\n", err.stack);
    });

Output

Advanced Examples

See the /test and examples directories for more use cases.

Returning 500s on Server Request

    http.createServer(function(req, res) {
        trycatch(function() {
            setTimeout(function() {
                throw new Error('Baloney!');
            }, 1000);
        }, function(err) {
            res.writeHead(500);
            res.end(err.stack);
        });
    }).listen(8000);

Visit http://localhost:8000 and get your 500.

Thanks

Special thanks to Tom Robinson for his long-stack-traces module and Tim Caswell who built out the initial hook.js code.

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