var _rKind = /^\[object (.*)\]$/, _toString = Object.prototype.toString, UNDEF; /** * Gets the "kind" of value. (e.g. "String", "Number", etc) */ function kindOf(val) { if (val === null) { return 'Null'; } else if (val === UNDEF) { return 'Undefined'; } else { return _rKind.exec( _toString.call(val) )[1]; } } module.exports = kindOf;