What is domain-browser?
The domain-browser package is a shim for Node.js's domain module, which allows you to handle multiple different IO operations as a single group. This is particularly useful in the context of handling errors across asynchronous operations. The package provides a way to group and handle errors and cleanup resources in client-side JavaScript that mimics Node.js's domain module functionality.
Error Handling
This feature allows grouping of IO operations and handling errors that occur within that group. The code sample demonstrates creating a domain, setting up an error handler, and running a function that throws an error asynchronously.
var domain = require('domain-browser');
var d = domain.create();
d.on('error', function(err) {
console.error('Caught error!', err);
});
d.run(function() {
setTimeout(function() {
throw new Error('Failed!');
}, 1000);
});