rem: }); 
add: }, 
context:     function _emit(self, event) {        var errors = [];        var obs = self.observers.slice();        for (var i = 0; i < obs.length; ++i) {            try {                obs[i](event);            } catch (e) {                self._removeObserver(obs[i]);                errors.push([e, "Log observer caused error, removing."]);            }        }        return errors;    });
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