Debugging Intern Tests

This is a rough guide on how to use Chrome to debug intern tests. If you know of a better way, please update.

Configure Chrome

Enable maps in Chrome

Debugging an Intern Test

add debugger; to set a breakpoint in your source code
build your source code using grunt build:amd:debug
- build:amd:debug generates map files for .ts source code that other build targets do not.
run the test suite using node --inspect-brk node_modules/intern/client.js config=tests/intern-debug
- note that we are using a different intern config file that disables code coverage
Open Chrome and paste chrome://inspect/#devices in the address bar.
Under the section titled Remote Target you should see
```
node_modules/intern/client.js file:///Users/joe/ion-js/node_modules/intern/client.js
inspect
```
with the last word inspect being a link. Click on it and the debugger pops-up in a new window

Caveats

The inspect link gets refreshed every time you run node with --inspect-brk
Source files are not always refreshed by chrome. You might have to clear your Chrome browsers cache