Commonwealth v. Orbin O., a juvenile

*1154 **760 In Commonwealth v. Newton N ., 478 Mass. ----, 89 N.E.3d 1159 , 2018 WL 700977 (2018), also decided today, in which a police officer applied for and obtained a delinquency complaint, we held that, "where a prosecutor exercises his or her discretion to proceed to arraignment on a delinquency complaint supported by probable cause, the judge may not dismiss the complaint before arraignment on the grounds that dismissal of the complaint is in the best interests of the child and in the interests of justice." We consider here whether that same limitation on judicial authority in deciding a…