Logging module

[ryanrolds]

Adds logging module discussed in #1390.

[oliverfoster]

could you put some whitespace into this file?

should be spaces 4 indentation, line breaks between function definitions etc

[ryanrolds]

The 4 for indentation conflicts with the 2 stated in the style guide which is linked to on the the Contributing-code page.

[oliverfoster]

Ignore the referenced/copied standard, it hasn't been formalized yet. It should say "spaces 4" indentation, no tabs, etc.

[oliverfoster]

These functions need their parameters to behaviour more like the console.log function.
essentially each argument forms part of the output string.

    fatal: function() {
      this._log('fatal', [].array.slice.call(arguments, 0)));
    },
    _log: function(level, datas) {
      if (!this._config._isEnabled) {
        return;
      }

      if (this._levels[level] < this._levels[this._config._level]) {
        return;
      }

      if (this._config._console) {
        var log = [level.toUpperCase() + ':'];
        datas && log.push.apply(log, datas);

        console.log.apply(console, log);
      }

      // Allow error reporting plugins to hook and report to logging systems
      this.trigger('log:' + level, datas);
    }

Allowing:

Adapt.log.fatal("this", "is", "a", "fatal", "error");
//FATAL: this is a fatal error

[ryanrolds]

Will do.

[ryanrolds]

• Fixed the indentation
• Adjusted log function arguments
• Query string override is now case-insensitive
• Added some blank lines
• Comments

Should be ready to review again.

[oliverfoster]

Beautiful ta. Much easier to read. It needs to work in ie8 though, so you'll need to use underscore bind and supply arguments to your splice calls, I think.

Also, only if you fancy doing it. You can return early twice in the initialize function, rather than a double nested if. Invert the expressions and return, flattening the code.

[ryanrolds]

IE8 has been EOL for a while now and as far as I'm aware is not supported on any current MS OSs.

[ryanrolds]

For ethical reasons I don't make changes to specifically support IE8, the browser is EOL and no longer receiving security updates, it's usage is negligent.

[oliverfoster]

Fair enough. I'll see if someone else can take over.

[oliverfoster]

functionality added on #1425

thanks for doing this @ryanrolds
nice bit of code