Product
Introducing License Enforcement in Socket
Ensure open-source compliance with Socket’s License Enforcement Beta. Set up your License Policy and secure your software!
An asynchronous domain-based exception handler with long stack traces for node.js
A domain-based asynchronous try/catch with (optional) long stack traces for node.js optimized for V8.
WARNING: trycatch replaces the built-in global Error object.
#Install
npm install trycatch
#Use
var trycatch = require('trycatch')
trycatch(function() {
// do something error-prone
}, function(err) {
console.log(err.stack);
})
###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.
#Options Optional Long-Stack-Traces:
// Because trycatch shims all native I/O calls,
// it must be required & configured with 'long-stack-traces' before any other modules.
var trycatch = require('trycatch')
trycatch.configure({'long-stack-traces': true})
trycatch(fnTry, fnCatch)
Colors:
var trycatch = require('trycatch')
trycatch.configure({
colors: {
// 'none' or falsy values will omit
'node': 'none',
'node_modules': false,
'default': 'yellow'
}
})
trycatch(fnTry, fnCatch)
Advanced Formatting:
var trycatch = require('trycatch')
trycatch.configure({
format: function(line) {
// Alter final output (falsy values will omit)
return line
}
})
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);
});
#Advanced Examples
See the /test
and examples
directories for more use cases.
uncaughtApplicationException
trycatch
effectively wraps all application callbacks in try/catch
blocks, preventing an exception in your application code from causing code in core to not execute. Effectively, this means that excpeitons originating in application code that normally would be passed as uncaughtException
, can instead be handled via uncaughtApplicationException
without requiring a restart:
process.on('uncaughtApplicationException', (err) => console.log(err.stack))
process.on('uncaughtException', (err) => {
console.log(err.stack)
// We are in an undefined state and need to restart
handleSoftShutodwn()
})
FAQs
An asynchronous domain-based exception handler with long stack traces for node.js
We found that trycatch demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Product
Ensure open-source compliance with Socket’s License Enforcement Beta. Set up your License Policy and secure your software!
Product
We're launching a new set of license analysis and compliance features for analyzing, managing, and complying with licenses across a range of supported languages and ecosystems.
Product
We're excited to introduce Socket Optimize, a powerful CLI command to secure open source dependencies with tested, optimized package overrides.