Support custom reporters

[dashed]

Wondering about this after looking at

• https://github.com/sindresorhus/jshint-stylish
• http://www.jshint.com/docs/reporters/

As far as I can tell, reporter isn't defined via jshint options in node.js (wouldn't really make sense).

Input to a custom report would be similar to input to jshint reporters except like this:

[
{
    id:        [string, usually '(error)'],
    code:      [string, error/warning code],
    reason:    [string, error/warning message],
    evidence:  [string, a piece of code that generated this error]
    line:      [number]
    character: [number]
    scope:     [string, message scope;
                usually '(main)' unless the code was eval'ed]

    [+ a few other legacy fields that you don't need to worry about.]
},
//...
]

The array structure differ since all errors/warnings/info are associated to only one file, for every file the js-loader processes. Thus, traditional jshint reporters aren't compatible.

• If there is no custom defined reporter, the default one will be provided.
• Custom reporters are executed with the loader's context as this. This provides emit functions.

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Would this be a good idea? Let me know otherwise.

At the moment, I'm using this in my project.

[sokra]

Thanks