Type error raised in IE9

[timberkeley]

"TypeError: Unable to get value of the property 'split': object is null or undefined"

This is again a problem with stack traces in IE, error.stack is undefined. I would think that the simplest option would to just return no method name for such an old and broken browser.

  try { throw new Error('') } catch (e) { error = e }
  if (error.stack === undefined) {
    return ""
  }

[justinkames]

@timberkeley

Thanks for the suggestion, I will update the the library so it is compatible with IE9.