Fix: Log unhandled exceptions in Node.js

[frankebersoll]

This is the first pull request for issue #29.

It adds an IExitController which is responsible for behavior when the application is exiting. If isApplicationExiting is true, NodeSubmissionClient will use synchronous event submission. A child process will be spawned synchronously, and pipes are used to transmit the request and response data.

Try it out using the following test:

var client = require("./dist/exceptionless.node.js").ExceptionlessClient.default;
var spawnSync = require("child_process").spawnSync;
var events = require("events");

client.config.apiKey = "WHATEVER";
client.config.useDebugLogger();

throw new Error("Test: Error");

[ejsmith]

Thanks for the contribution!

[niemyjski]

Thank you very much for the pull request! Awesome job man! I know it was a lot of hard work. I don't follow one part of of the child process workflow and was wondering if we could meet up and you could give me a quick tour. I'd just like to follow 100% how it works so I can help support it and help maintain it :).

I was also wondering about your exit controller and wanted your feedback ( @frankebersoll @ejsmith). I was wondering if there is ever a time we would want more behaviors:

• On Exit
• On Freeze (when the tab isn't active).

I'm not sure if we'd need these or not. If you can think of any other behaviors we might need to support we might want to refactor the exit controller into a behavior that covers on exit. Do you think we would ever need this, and if so do you think we should future proof it??

[frankebersoll]

Okay, now I know what "rename branch" in Tower actually does... 😔

[frankebersoll]

Okay, now we have:

• TypeScript 1.6.2
• Up-to-date node.d.ts
• Unmodified console output of unhandled exceptions
• Submission on Ctrl+C

[niemyjski]

Ship it